Posts Tagged ‘chemistry’

the-universe-in-100-key-discoveries-by-giles-sparrowThe Universe in 100 Key Discoveries, Giles Sparrow (Quercus 2012)

Possibly the best book I’ve ever read on astronomy: text and images complement each other perfectly. Even the solidness of the book was right. It’s a heavy book about heavy ideas, from the beginning of the universe to its possible endings, with everything astronomical in between.

And everything is astronomical, if it’s looked at right. The elements vital for life were cooked in stars before being blasted out by supernovae. We are star-stuff that has the unique privilege – so far as we know – of being able to understand stars.

Or trying to. This book was first published in 2012, so it’s inevitably out of date, but many of the mysteries it describes are still there. And when mysteries are solved, they sometimes create new ones. Even the behaviour and composition of a celestial body as close as the Moon is still impossible for us to explain. But sometimes it’s easier at a distance: the interior of the earth can harder to study than galaxies millions of light years away, as I pointed out in “Heart of the Mother”.

In every case, however, understanding depends on mathematics. Astronomers have been building models of the heavens with shapes and numbers for millennia, but the models had to wait for two things to really become powerful: first, the invention of the telescope; second, the development of modern chemistry and physics. Whether or not there is life out there, celestial light is full of messages about the composition and movement of the stars and other bodies that generate it.

But visible light is only a small part of the electromagnetic spectrum and modern astronomy probes the universe at wavelengths far above and below it. The more data astronomers can gather, the more they can test the mathematical models they’ve built of the heavens. The best models make the most detailed predictions, inviting their own destruction by ugly facts. But when predictions fail, it sometimes means that the observations are faulty, not the models. Cosmological models predicted much more matter in the universe than we can see. Is the gap accounted for by so-called “dark matter”, which “simply doesn’t interact with light or other electromagnetic radiations at all”? (ch. 98, “Dark Matter”, pg. 396)

Dark matter is a strange concept; so is dark energy. Astronomy may get stranger still, but the cover of this book is a reminder that human beings inhabit two kinds of universe. One is the universe out there: matter and radiation, moons, planets, stars, galaxies, supernovae. The other is the universe in here, behind the eyes, between the ears and above the tongue. The cover of this book offers a vivid contrast between the swirling complexity and colour of a star-field and the sans-serif font of the title and author’s name. But the contrast is ironic too. The stars look complex and the font looks simple, but language is actually far more complex and difficult to understand than stars.

Consciousness may be far more complex still. In the end, is the value of science that it expands consciousness, offering new physical and mental sensations of discovery and understanding? The powerful and beautiful images and ideas in this book could only have been generated by science, because the universe is more inventive than we are. But without consciousness, the universe might as well not exist. Without language, we’d never be able to try and understand it. Then again, the universe seems to have invented language and consciousness too.

Read Full Post »

The Collected Stories of Arthur C. ClarkeThe Collected Stories, Arthur C. Clarke (Victor Gollancz 2000)

Do you want to know the difference between ingenuity and imagination? Between literary competence and literary genius? Then compare Arthur C. Clarke’s short stories with J.G. Ballard’s short stories. Reading Ballard is like exploring a jungle; reading Clarke is like touring a greenhouse. Ballard is haunting and head-expanding in a way that Clarke isn’t, much as he might have wanted to be.

You could say that the difference between them is like the difference between wizardry and engineering or poetry and prose or madness and sanity. Clark Ashton Smith and J.R.R. Tolkien are different in the same way. Ballard and Smith could conjure dreams on paper; Clarke and Tolkien could create realistic worlds. I like all four writers, but I don’t place them at the same level. There is a great gulf fixed between the wizards and the engineers. I’m reminded of it every time I read Clarke and Tolkien, so part of the value of their work is that it teaches me to appreciate Ballard and Smith more. Or to marvel more.

All the same, the engineers could do things that the wizards couldn’t. Clarke and Tolkien were better educated than Ballard and Smith, and Clarke knew more about hard science than Ballard. There are some ideas and images in this book that take realism to its limits. The life-form that Clarke invented for “Castaway” (1947) has stayed with me ever since I read the story as a child. It was thrown off its home-world by a storm – or rather, thrown out of its home-world. That’s because it was a plasma-creature living inside the sun until it was ejected by a solar storm and blown on the solar wind to the Earth:

The tenuous outer fringes of the atmosphere checked his speed, and he fell slowly towards the invisible planet. Twice he felt a strange, tearing wrench as he passed through the ionosphere; then, no faster than a falling snowflake, he was drifting down the cold, dense gas of the lower air. The descent took many hours and his strength was waning when he came to rest on a surface hard beyond anything he had ever imagined.

The unimaginably hard surface is actually the Atlantic Ocean, where the plasma-creature is detected by the radar of an overflying jet-liner. It looks like a giant amoeba to the wondering humans who are watching the radar, but they can’t see anything at all when they look at the water. The story is a very clever exercise in shifts of perspective and Clarke returned to these ideas in “Out of the Sun” (1958), in which the same kind of creature is thrown out of the sun and lands on Mercury, where it freezes to death in “seas of molten metal”. More wondering humans have watched it fly through space on radar from a solar-observation base. As it dies, the humans feel a “soundless cry of anguish, a death pang that seeped into our minds without passing through the gateways of the senses.”

There’s also alien life and clever invention in “A Meeting with Medusa” (1971), which is about a solo expedition to Jupiter that discovers giants in the clouds: browsing herbivores that defend themselves from swooping predators with electrical discharges. The explorer is called Falcon and is part-robot after an air-ship crash on earth. That enables him to survive “peaks of thirty g’s” as his air-ship, called Kon-Tiki, descends to the “upper reaches of the Jovian atmosphere” and collects gas so that it can float there and observe. The story takes you to Jupiter and teaches you a lot about Jovian physics, chemistry and meteorology: it’s realism, not reverie, and Falcon’s discovery of life is entirely plausible.

The story was probably influenced by Arthur Conan Doyle’s “The Horror of the Heights” (1913), a proto-Lovecraftian story in which an early aviator discovers similar predators high in the air above Wiltshire. Doyle’s contemporary H.G. Wells was certainly an influence on Clarke: there’s even a piece here (not a proper story) called “Herbert George Morley Roberts Wells, Esq.” (1967). Clarke also knew Lovecraft and wrote a short parody of At the Mountains of Madness (1931) called At the Mountains of Murkiness, but the parody isn’t collected here and Lovecraft’s influence isn’t very obvious. Clarke had a sunny and optimistic personality and wrote few dark or depressing stories. There is a definite Lovecraftian touch, however, in one of the mini-stories collected under the title “The Other Side of the Sky” (1957). In “Passer-By”, an astronaut describes seeing something as he travels between space-stations on a rocket scooter. First he spots it on radar, then watches as it flies past:

I suppose I had a clear view of it for perhaps half a second, and that half-second has haunted me all my life. […] Of course, it could have been a very large and oddly shaped meteor; I can never be sure that my eyes, straining to grasp the details of so swiftly moving an object, were not hopeless deceived. I may have imagined that I saw that broken, crumpled prow, and the cluster of dark spots like the sightless sockets of a skull. Of one thing only was I certain, even in that brief and fragmentary vision. If it was a ship, it was not one of ours. Its shape was utterly alien, and it was very, very old.

It’s Lovecraftian to compare the portholes of a space-ship to the eye-sockets of a skull. So is the idea of a “very, very old” wreck flying between the stars. The uncertainty and doubt are Lovecraftian too, but you could also say that they’re scientific. Clarke often emphasizes the fallibility of the senses and the uncertainty of inferences based on them. Science is a way of overcoming those sensory limitations. In Lovecraft, science is dangerous: that uncertainty would slowly give way to horror as the truth is revealed. Clarke’s protagonist experiences no horror and though he’s haunted for life by what he might have seen, he feels that way because he didn’t learn enough, not because he learnt too much.

That story may have been the seed for Rendezvous with Rama (1976), which could be seen as a more optimistic re-working of At the Mountains of Madness. Puny humans explore a titanic alien artefact in both stories, but Clarke’s humans aren’t punished for their curiosity and at the end of the novel they look forward to indulging more of it. Clarke is good at grandeur and invoking the hugeness of the universe. He wrote about galaxy-spanning empires, giant scientific discoveries and struggles to save the universe.

He wrote about the multiverse too and there’s a story that makes the multiverse seem big by portraying a very confined part of it. This is the opening paragraph of “The Wall of Darkness” (1949):

Many and strange are the universes that drift like bubbles in the foam upon the river of Time. Some – a very few – move against or athwart its current; and fewer still are those that lie forever beyond its reach, knowing nothing of the future or past. Shervane’s tiny cosmos was not one of these: its strangeness was of a different order. It held one world only – the planet of Shervane’s race – and a single star, the great sun Trilorne that brought it life and light.

Shervane is a young man who makes a very strange discovery when he tries to cross a giant wall that circles his home planet. What is on the other side? In a way, everything is. This is another story that has stayed with me from my first reading of it as a child. And it could almost have been written by Ballard: like Ballard’s “The Concentration City” (1957) or “Thirteen to Centaurus” (1962), it’s about trying to escape from confinement and making an unexpected or ironic discovery about the true nature of things. Unlike Ballard, Clarke didn’t spend the Second World War locked in a prison camp, but he could get big ideas from a wall and the limit it imposed.

Neither he nor Ballard always wrote about big and serious ideas, however. Many stories here are deliberately small and silly, or big in a ludicrous way. P.G. Wodehouse seems to be an influence on the stories that come under the heading of Tales from the White Hart, in which Harry Purvis spins fanciful yarns for an audience of scientists and science-fiction writers in a pub in London. One story has an exploding moonshine still, another a giant squid that’s angry about its brain being manipulated, another a fall of twenty feet during which an unfortunate scientist doesn’t merely break the sound-barrier, but travels so fast that he’s burnt alive by air-friction.

It’s a horizontal fall too, although the story is called “What Goes Up” (1956). Clarke was playing with science there; elsewhere, in stories like “Green Fingers”, part of “Venture to the Moon” (1956), he’s making serious suggestions. The story is about a botanist on the moon who is killed by his own ingenuity, but it’s not a gloomy, Lovecraftian doom. Risks are part of exploration and adventure and Clarke presented space-travel as a new form of sea-faring. He loved both the sea and the sky and his love shines brightly here. So do “The Shining Ones” (1962), the intelligent cephalopods who end the life of another of his protagonists.

The premature death of adventurous young men is a theme he shared with A.E. Housman, whose poetry he greatly admired, but Clarke could also write about the rescue of adventurous young men, as in “Hide-and-Seek” (1949), “Summertime on Icarus” (1960) and “Take a Deep Breath” (1957). And deaths in his work aren’t futile or proof that man is always ultimately defeated. If Clarke had written pessimistically like that, he wouldn’t have been so popular among working scientists or inspired so many children to enter science. But he could appeal to children partly because he never properly grew up himself. Unlike Ballard, he never married or had any children of his own and his decision to live on Sri Lanka was probably inspired in part by paederasty, not just by his interest in scuba-diving.

My final judgment would be that he was an important writer, not a great one. I’ve enjoyed re-reading the stories here – even the numerous typos were fun – but that’s partly because they’ve sharpened my appreciation of J.G. Ballard. Clarke had no spark of divine madness: he was Voltaire to Ballard’s Nietzsche. His work does sparkle with intellect and ideas, but he made more out of science than he ever did out of fiction.

Previously pre-posted on Papyrocentric Performativity:

Clarke’s Arks – reviews of Imperial Earth (1976) and Rendezvous with Rama (1972)

Read Full Post »

Rocks and Minerals by Ronald Louis BonewitzRocks and Minerals, Ronald Louis Bonewitz (Dorling Kindersley 2012)

When you read a book, you read your own brain. Somehow the chemicals inside your skull turn electrical signals into conscious experience. Colour is one of the most powerful examples: the difference between the red of cinnabar, the yellow of orpiment and the blue of hemimorphite is ultimately a difference in the firing-rate and strength of nerve-signals. But that’s true of the differences between sight and smell, smell and hearing, hearing and touch, and so on. The nerve-signals are essentially the same: it’s the encoding that changes, but the encoding is quantitative, not qualitative. So how do quanta turn into qualia?

This book brings these questions home very strongly, because its images are so powerful. Minerals can be beautiful or ugly, crystalline or formless, dazzling or dull. Yet all those differences, so sharp in the mind, arise from differing arrangements of the same set of subatomic particles. Smooth blue turquoise has the chemical formula CuAl6(PO4)4(OH)8•4H2O; the orange-red crystals of vanadinite have the formula Pb5(VO4)3Cl. Those very different formulas involve different elements, so it’s not surprising that turquoise and vandanite have very different appearances and chemical behaviour.

But all elements are built of three things: protons, neutrons and electrons. On every page of this book you’re just seeing variations on a threme – a theme of three. But “just” isn’t right for the vastness of what’s going on. The differences between minerals are numerical: the three particles are arranged differently and come in different quantities. Of course, there are sub-atomic forces involved too and smaller units at work in the three particles, but the fundaments of matter are far simpler than the shapes, colours and textures that can be produced by mixing those fundaments in varying proportions.

As you’ll see here: variety is the spice of this book. The geologist Ronald Louis Bonewitz discusses basic chemistry, crystallography and collecting techniques, then works his way systematically through the many families of mineral: native elements, sulphides, molybdates, arsenates, and so on, plus organics like coral and amber. Then there’s a shorter section on rocks: igneous, metamorphic and sedimentary, plus meteorites. Each distinct mineral and rock has an individual page with a colour photograph, a formula, a key of its identification features, and a short text discussing its name, chemistry and uses:

Scorodite FeAsO4•2H2O3

A hydrated iron arsenate mineral, scorodite takes its name from the Greek word scorodion, which means “garlic-like” – an allusion to the odour emitted by the arsenic when specimens are heated. Scorodite can vary considerably in colour depending on the light under which it is seen: pale leek green, greyish green, liver brown, pale blue, violet, yellow, pale greyish, or colourless. It may be blue-green in daylight but bluish purple to greyish blue in incandescent light; in transmitted light it may appear colourless to pale shades of green or brown. Crystals are usually dipyramidal, appearing octohedral, and may have a number of modifying faces. They may also be tabular or short prisms. Drusy coatings are common. Scorodite may also be porous and earthy or massive. Scorodite is found in hydrothermal veins, hot spring deposits, and oxidized zones of arsenic-rich ore bodies. Associated minerals may be pharmacosiderite, vivianite (p. 157), adamite (p. 160), and various iron oxides. (“Minerals: Arsenates”, pg. 165)

There’s a lot here to delight the eye, stimulate the mind and twist the tongue, but chemistry always makes me think of consciousness. It’s a fundamental science and it’s been spectacularly successful in both explaining and altering the material world. This book is a triumph of chemistry both as an object and as an exposition.

But chemistry isn’t all-conquering: it’s helpless to explain the mental aspect of the world. My brain is made of the same basic particles as both this book I’m reading and the minerals it’s describing and depicting. But I’m conscious and they’re not. Science has absolutely no idea how to cross the chasm between matter and mind.

This book wasn’t intended to raise that question, but it does for me. And the better it succeeds in its obvious purpose – portraying, describing and explaining matter – the more strongly it knocks on that stubbornly closed metaphysical door.

Read Full Post »

30-Second Elements ed by Eric Scerri30-Second Elements: The 50 Most Significant Elements, Each Explained in Half a Minute, ed. Eric Scerri (Icon 2013)

Pythagoras thought the world was governed by whole numbers and their ratios. He was wrong, but you could still call chemistry a Pythagorean subject. The huge difference between, say, the noble gas neon and the alkali metal sodium is actually based on a tiny difference in protons. Neon has ten, sodium has eleven. That’s why the two of them behave so differently. As Hugh Aldersey-Williams says on page 64: “Neon is so inert that it forms no chemical compounds at all.” But Brian Clegg says this of sodium on page 16:

This soft, silver-tinted alkali metal is known for its reactivity. Drop a small piece into water and it will fizz energetically as it converts to sodium hydroxide and hydrogen, giving off plenty of heat.

The atomic weight of an element, or the number of positively charged protons it has, affects the number of negatively charged electrons it has. Electrons and their arrangement determine how an element reacts with itself and with other elements. So one proton extra can make a huge difference: it can tip the balance between one configuration of electrons and another, between the inertness of neon and extreme reactivity of sodium.

And sodium obviously isn’t something you’d want to put in your mouth. Except that it is. Sodium is essential for life and isn’t dangerous when ingested as part of the compound NaCl, a.k.a. sodium chloride, a.k.a. table salt. The other half of the compound, chlorine, is also dangerous in its free state: when breathed in, it “burns away the lining of the lungs, leaving victims drowning the fluid that oozes out” (pg. 54).

Elsewhere, carbon and oxygen are the opposite: benign or essential for life when they exist as free elements, but potentially deadly in combination as CO, carbon monoxide, or CO2, carbon dioxide. Chemistry is a complicated business, but there is an underlying simplicity in the whole numbers that represent sub-atomic particles: protons, electrons and neutrons.

This simplicity is laid out in the periodic table, which was proposed and perfected by the Russian chemist Dmitri Mendeleev (1834-1907) in the nineteenth century. As explained in the introduction to this book, the table arranges elements in columns and elements in the same column share chemical properties. Neon is in the column of noble gases, on the far right, while sodium is in the column of alkali metals, on the far left. An extra proton turns helium into lithium, neon into sodium, argon into potassium, krypton into rubidium, and so on. A small change in atomic weight translates into a huge change in chemical behaviour.

An extra proton also turns platinum into gold and gold into mercury. But the transitions in behaviour aren’t as sharp in the inner columns of the periodic table: all of those elements are metals, even though mercury is liquid at room temperature. It’s also poisonous and when it was used to “treat animal fur in hat-making”, it inspired “the phrase ‘mad as a hatter’ and the character of the Hatter in Lewis Carroll’s 1865 novel Alice’s Adventures in Wonderland” (pg. 90). The double-page elemental biographies discuss culture as well as chemistry and chemists, but they’re all brief and this is a primer, not a proper scientific text.

And one page of each biography is occupied by an image: 30-Second Elements is a book for the internet age and its short attention spans. But the images are colourful and inventive – a glowing skeleton dancing amid seashells for “Calcium”; diamonds surrounding a cut-away earth for “Carbon”; the Statue of Liberty atop coils of tubing for “Copper” – and they capture the spirit of chemistry, both as a subject and as a phenomenon. Chemistry is rich, exuberant and endlessly fascinating. All its big names and big discoverers are here, from Lavoisier, Mendeleev and Humphrey Davy to William Ramsey, Marie Curie and Glenn Seaborg.

Read Full Post »

Volcanoes A Beginners Guide by Rosaly LopesVolcanoes: A Beginner’s Guide, Rosaly Lopes (Oneworld 2010)

My first introduction to volcanoes was fictional: Willard Price’s Volcano Adventure (1956), which stands out in his Adventure series because it centres on something inanimate, not on animals like lions or gorillas or elephants. This book by the NASA scientist Rosaly Lopes is factual but equally enjoyable. And some of it would fit well into Volcano Adventure anyway:

[V]olcanoes come with different sizes, shapes and temperaments. It is fascinating to study what causes these differences and understand that, while generalizations are possible, each volcano has its distinct quirks, just like people. We could also compare volcanoes to cats: with few exceptions, they spend most of their lives asleep. (ch. 1, “What are volcanoes?”, pg. 1)

When a volcano wakes, look out. They’ve slain cities, devastated eco-systems and shaped landscapes. They’re also shaped cultures. Like a thunderstorm or earthquake, an erupting volcano raises a big question in the minds of human observers: What caused something so powerful and impressive? Our explanations began with myth and moved to science. And they moved a long time ago: the ancient philosopher Anaxagoras “proposed that volcanic eruptions were caused by great winds within the Earth, blowing through narrow passages” (pg. 5) and becoming hot by friction. Two-and-a-half millennia later, scientists are plotting “silica (SiO2) content” against “alkali content” as they classify “different volcanic rocks” (ch. 2, “How volcanoes erupt”, pg. 15).

But Anaxogaras’ principles are still at work: seek the explanation in mindless mechanism, not in supernatural mind. Classification is another essential part of science. In vulcanology, the scientific study of volcanoes, magmas are classified and so are eruptions, from subdued to spectacular: Icelandic and Hawaiian are on the subdued side, Peléean, Plinian and Ultraplinian on the spectacular, with Strombolian and Vulcanian in between. Some eruptions are easy to understand and investigate. Some are difficult. Volcanoes can be as simple or complicated as their names. Compare Laki, on Iceland, with Eyjafjallajökull, also on Iceland.

Laki is an example of an eco-slayer:

Although the eruption did not kill anyone directly, its consequences were disastrous for farmland, animals and humans alike: clouds of hydrofluoric acid and sulphur dioxide compounds caused the deaths of over half of Iceland’s livestock and, ultimately, the deaths – mostly from starvation – of about 9,000 people, a third of the population. The climatic effects of the eruption were felt elsewhere in Europe; the winter of 1783-4 as noted as being particularly cold. (ch. 3, “Hawaiian and Icelandic eruptions: fire fountains and lava lakes”, pg. 31)

Lopes goes on to look at city-slayers like Mount Pelée and Vesuvius, but they can be less harmful to the environment. A spectacular eruption can be over quickly and release relatively little gas and ash into the atmosphere. And death-dealing is only half the story: volcanoes also give life, because they enrich the soil. They enrich experience too, not just with eruptions but with other phenomena associated with vulcanism: geysers, thermal springs, mudpools and so on.

And that’s just the planet Earth. Lopes also discusses the rest of the solar system, from Mercury, Venus and Mars to the moons of gas giants like Jupiter and Saturn. The rocky planets have volcanoes more or less like those on earth, but the moons of the gas giants offer an apparent paradox: cryovolcanoes, or “cold volcanoes”, which erupt ice and water, not superheated lava. On Neptune’s moon Triton, whose surface is an “extremely cold” -235ºC, cryovulcanism may even involve frozen nitrogen. The hypothesis is that under certain conditions, it’s heated by sunlight, turns into a gas and “explodes” in the “near-vacuum of Triton’s environment” (ch. 11, “The exotic volcanoes of the outer solar system”, pg. 138).

Hot or cold, big or small, on the earth or off it, volcanoes are fascinating things and this is an excellent introduction to what they do and why they do it.

Read Full Post »

Scented Flora of the World by Roy GendersScented Flora of the World: An Encyclopedia, Roy Genders (Robert Hale 1977)

It’s hard to believe that even a horticulturalist as expert and dedicated as Roy Genders (1913-85) was personally acquainted with every flower, tree, and shrub in this large and detailed book. But the back cover claims that it was “a thirty-year labour of love”, so perhaps he was. Either way, he was a lucky man. There is a Chinese saying that runs: “If you want to be happy for a day, get drunk; happy for a year, get married; happy for a lifetime, get a garden.”

Plants and flowers are endlessly rewarding and in a way the absence of pictures here intensifies the romance and sensuality of its subject. Even the appendices, running from “A” to “T”, are good to read: “Night-Scented Flowering Plants” combines the mystery of night with the strangeness of scientific names (Heliotropicum convolvulacaeum), the evocation of scent (vanilla, honey, lily), and the enchantment of distance (Mexico, Brazil, South Africa).

Then there are “Scented Aquatic Plants” and “Scented Cacti and Succulents” — and that is only the appendices. In the first part of the book Genders discusses the history, chemistry, culture and psychology of scented flora, then plunges head-and-heart-long into the encyclopedia of the book’s title. There’s everything from Abelia chinensis, with its “rose-tinted flowers, like miniature fox-gloves”, to Zylopa glabra, whose seeds, “much sought after by wild pigeons… impart their particular odour to the birds’ flesh”. In between there are plants like Illicium religiosum, an omnifragrant Japanese tree used for incense and for strewing at funerals. Genders says that it’s known in China as “Mang-thsao, ‘the mad herb’, for it is said to cause frenzy in humans”.

Scent can do that, either by attracting or by repelling. And Genders doesn’t neglect the repellent side of his subject: he describes the pongy and pungent with the sweet and soporific. The final appendix draws up a “Phew’s-Who” of “Plants bearing Flowers or Leaves of Unpleasant Smell”. It’s like a remainder of the death and decay that await us all, but those are what nourish the plants that are beautiful and sweetly-scented, as well as those that are only one of those or neither.

So Scented Flora is big both in bulk and in its themes. According to the Oxford English Dictionary, “encyclopedia” is spurious Greek for “all-round education”. Despite its focus on one aspect of one subject, that’s what Genders reveals and provides here. He knew a lot not just about horticulture and science, but about literature and culture too. We call Filipendula ulmaria “meadow-sweet” nowadays, but Ben Johnson knew it as “Meadow’s Queen”, perhaps after the French reine-des-prés, “queen of the meadows”. The herbalist Gerard said that its scent “makes the heart merry and delighteth the senses”. It does exactly that, but there are thousands more scented plants to explore and anticipate here.

Read Full Post »

Wicked Plants by Amy StewartWicked Plants: The A-Z of Plants that Kill, Maim, Intoxicate and Otherwise Offend, Amy Stewart (Timber Press 2010)

One of the most memorable villains in fiction is Ernst Blofeld, who battles James Bond in various books and films. Blofeld’s most memorable scheme is the garden of death he creates in You Only Live Twice (1964) to exploit the Japanese taste for suicide. As Ian Fleming puts it: Blofeld wants to “slay it with flowers”.

He would have found this book an excellent guide for his gardening. But he couldn’t have hoped to collect everything here, because it covers a world of wickedness and weathers, from monkshood in Scotland to mouse trap trees in Madagascar. The former is metabolically offensive: its alkaloid poison aconite “paralyzes the nerves, lowers the blood pressure, and eventually stops the heart” (pg. 2). The latter is mechanically offensive: its seeds are covered in hooked spines and “humans who have been caught in its grip report that attempting to remove the seedpods is like getting caught in a Chinese finger trap” (pg. 218).

The Chinese are famous for their ingenious tortures, but Mother Nature is more ingenious still. After all, she invented the Chinese too. Natural poisons can attack the muscles, the nerves, the skin and the brain. They can cripple you, blind you, kill you and drive you mad. That’s why they’re interesting. Amy Stewart covers every kind of offensive plant, from trees and grasses to cacti and algae, and quotes everyone from Charles Darwin and Sigmund Freud to Hippocrates and Ovid. Whether it’s poisonous or simply a pest, you should find it discussed here: deadly nightshade and tobacco are killers, kudzu and water hyacinth are pests.

But there isn’t actually an entry under “Z”: the book starts with “Aconite” and ends with “Yew”. Which is appropriate, because humanity wouldn’t exist without plants. They enhance our lives in countless ways too. This book turns the leaf and discusses plants that destroy or distress us instead. It’s full of botany, chemistry, history and mean green machines.

Read Full Post »

The Oxford Companion to Wine edited by Janice RobinsonThe Oxford Companion to Wine, ed. Janice Robinson (Oxford University Press 2006) (third edition)

Another big book for another big subject: wine. Because it’s organized alphabetically by topic, you can open it anywhere and begin zigzagging through the world of wine. The antiquity of the world is reflected in the antiquity of the word, which entered English so long ago that it preserves the original pronunciation of Latin vinum, with initial “w”, not “v”. “Vine” is from the same root but comes from Old French. The word has deeper roots in Indo-European – “wiyana and wayana are quoted from the ancient Anatolian languages” – and may have cognates in Hebrew and Arabic. But what is its ultimate origin? “No theory is convincing,” concludes the linguist Dr Leofranc Shelford-Strevens, “except after a few glasses” (entry for “Wine”, pg. 768).

That’s a good name for someone writing about wine and that Johnsonian humour enlivens other entries: “wine writing” is a “parasitical activity undertaken by wine writers enabled by vine-growing and wine-making” (pg. 772) and “Siegerrebe” is a “modern German vine crossing grown principally, like certain giant vegetables, by exhibitionists” (pg. 630). Wine apparently encourages high spirits in its writers, not just its drinkers, but there’s also an entry for “bore, wine”. The next entry is for “borers”, about “beetles and their larvae”. Then comes the entry for “boron”, about an essential trace element. So three entries span sociology, entomology and chemistry. Each has a separate author too. This book had to be a collaboration, because no-one could possibly be an expert on all aspects of oenology, as the study of wine is called (from Greek oinos, whose earlier form is woinos).

So different entries have different flavours, like wine itself: simple or complex, sweet or astringent. All wine-making countries and regions have their own entries, from Alsace to Zimbabwe, from Georgia to Japan, and almost every conceivable aspect of wine and viticulture is discussed and described, from the gustatory and linguistic to the botanical and medical, from Dionysus and drunkenness to bottles and the shape of wine-glasses. You’ll learn here how the Greek writer Athenaeus (fol. 200 AD) wrote a book called Deipnosophistae, “The masters of the art of dining”, in which the “two most frequent topics are Homer and wine” (pg. 38). But Athenaeus isn’t systematic about wine: he assembles “curious facts”.

This book is systematic, but it has a lot of curious facts too. What are the differences between macro-, meso- and microclimate? They’re explained here. What did the Roman poet Martial think about Egyptian wine? His astringencies are quoted not just in translation, but in Latin too (pg. 429). Which Roman emperor ordered vineyards rooted up and which ordered them re-planted? Domitian (pg. 234) and Probus (pg. 548), respectively. Which wine did Napoleon drink to console his exile on St Helena? Constantia (pg. 193). Which wine is celebrated in the national anthem of its homeland? Tokaji (pg. 699) – the Hungarian anthem praises God for ripening wheat tokaj szőlővesszein, “in the grape fields of Tokaj”. But I couldn’t find anything on wine and the visual arts. It would have been good if they had been discussed and some wine-paintings and wine-sculptures had been included with the other photos. The closest the book comes is a photograph of a barrel cellar owned by the Mastroberadino firm in Campania, Italy, which incidentally shows a beautiful and mysterious painting on the roof. Why are the naked female figures hiding their faces? Who was the artist?

Dionysus (c. 70 A.D.) (see also)

Dionysus (c. 70 A.D.) (see also Prometheus Unbound)

You won’t learn that here. You won’t learn how to pronounce unfamiliar names and terms either, because no pronunciation keys are given. So no art, no articulation. Apart from that, this big book is worthy of its big subject. Is wine one of the glories of life? Some don’t think so: they go further, as the entry for “Rome, classical” reveals (pg. 589). “Vita vinum est!” proclaims Trimalchio in the Satyricon (late 1st century A.D.): “Life is wine!” Petronius may not have lived to drink himself, but he surely made his life better with wine. Two millennia later, you can make your wine better with the words in this book.

Read Full Post »

Front cover of Steve Backshall's Most Poisonous CreaturesSteve Backshall’s Most Poisonous Creatures, Steve Backshall (New Holland 2013)

As the BBC naturalist Steve Backshall says in his introduction: “Human beings have an unhealthy obsession with any animal that can maim or mutilate, and those that deliver venom are obviously high on our fascination list.” But is it unhealthy? It’s wise to pay attention to dangerous things and it’s possible that some animals in this book have become part of our DNA. Human beings were once monkeys and monkeys have an instinctive fear of snakes (though it needs to be primed). If there’s an instinctive fear of snakes, why not of spiders and scorpions too?

There are lots of snakes in this book, but not so many spiders and few scorpions. The latter two are a more specialized taste and a popular book doesn’t want too many of them. Snakes often inspire respect, spiders and scorpions often inspire repulsion. As do centipedes and cane-toads. Some venomous animals look villainous, some poisonous ones look painful. Some don’t. Phyllobates terribilis is “believed to have enough poison to kill ten men”. But it’s a harmless-looking golden frog shown here perched on a scarlet flower (pg. 10). If you saw one, you’d feel like picking it up. Which would be a very bad idea.

That also applies to the two species of blue-ringed octopus, Hapalochlaena lunulata and H. maculosa, found around the Australian coast. Again, it’s a very bad idea to pick one up: “one tiny, golf-ball-sized octopus can have enough venom to kill 26 people” (pg. 115). That combination of delicacy and deadliness gives a special power to the poison-dart frogs and the blue-ringed octopus. Australia’s deadliest snake is more conventionally disturbing:

The most powerful venom, drop for drop, is produced by the inland Taipan (Oxyuranus microlepidatus): a single drop from this beautiful snake is enough to kill 250,000 mice and by extrapolation, 100 people! However, no-one has ever been killed by one. This is mainly because they are shy snakes that tend to avoid human contact. (pg. 120)

Australia is famous for strange and dangerous wildlife, but its cars are much deadlier than its snakes or octopuses. Less dangerous, but even stranger is the duckbilled platypus, Ornithorhyncus anatinus. Very few mammals lay eggs and very few use venom. The platypus does both, though not at the same time: the females lay eggs and the males use venom, injecting it with “moveable spurs on the rear legs” (pg. 118). One Vietnam veteran who experienced a platypus sting said it was more painful than a bullet-wound.

But there’s even more toxicological strangeness in that part of the world: Papua New Guinea has at least one poisonous bird, Pitohui dichrous, the hooded pitohui. It uses the batracho-toxins first discovered in, and named for, the poison-dart frogs of South America, just as the blue-ringed octopus uses the tetrodotoxin first discovered in, and named for, the pufferfish, Tetraodontidae spp. All these groups get their deadly chemicals from their diet: insects, plankton and so on.

So why don’t they die from their diet? That’s one of the interesting questions about the animals in this book: their venoms and poisons have to be dangerous to others and harmless to themselves. It’s a question of chemistry, one way or another. Either the animal has a way of neutralizing the effects of its own poisons or it stores them away from the rest of its body, creating some kind of barrier to their spread. Richard Dawkins has described evolution as a blind watchmaker, but the watchmaker is really a chemist. And an electro-chemist. Nerve-signals, and the toxins that interfere with them, don’t run on copper wires. They flash through flesh instead, carrying the pain of a bite or sting. Or the patterns of a dangerous animal’s skin or scales: it pays to advertise when you’re poisonous. And perhaps some feathers are advertising too: Backshall suggests the birds of paradise on New Guinea may look spectacular as a warning for predators, not simply as a signal for mates.

Poisonous birds are a recent discovery and there may be more surprises in store: biology is a big field, though Backshall ends the book by noting that it’s getting smaller. More people mean less space for fewer animals and pollution is the deadliest poison of all. Another big poison is television: it dulls more brains and stifles more minds than anything Mother Nature ever devised. But this book wouldn’t exist without TV and Homo sapiens is part of nature, just like shrews, salamanders and slow lorises. We’ve just added more complexity to the game of evolution: we haven’t escaped it. The rules that apply to animals also apply to us and toxicology is one of the most interesting areas of biology. This is a good introduction full of photos, folklore and facts about everything from snakes, octopuses and platypuses to jellyfish, water-boatmen and the Komodo dragon.

Read Full Post »