Chlorokill

The Day of the Triffids, John Wyndham (1951)

If you want to know the difference between talent and genius, compare The Day of the Triffids (1951) with the book that obviously inspired it: The War of the Worlds (1897). John Wyndham (1903-69) had talent; H.G. Wells (1866-1946) had genius. But Wyndham had a lot of talent, all the same. And it’s powerfully displayed in The Day of the Triffids. However, although it’s his most famous book, it isn’t his best. I’m not sure what it is. Wyndham was an uneven writer, not very good at dialogue or characterization, and although he was born decades after Wells, in some ways his books have dated more.

And maybe he was better at short stories than novels. Either way, his big ideas were almost always good and so were the titles of his novels. There’s the humanity-hating submarine race in The Kraken Awakes (1953); the mysterious telepathic alien in Chocky (1968); the persecuted telepathic mutants in The Chrysalids (1955); and the world-threatening super-children in The Midwich Cuckoos (1955). In The Day of the Triffids there are really two big ideas: walking plants and worldwide blindness. In the chronology of the book, but not the narration, the walking plants come first: they’re the triffids, three-legged, seven-feet tall and equipped with a deadly whip-sting. Once you’ve mentally pictured them, the triffids will never leave your head. I think they’re a clever, chlorophyllic adaptation of the giant three-legged Martian war-machines in War of the Worlds.

But how can the triffids get loose and wreak havoc on the human race as the Martian war-machines did? Triffids are blind and sense rather than see their targets, so they are no match for sighted humans. Obviously, then, Wyndham had to take sight away from humans to get triffids and humans battling for possession of the earth. He did it in rather contrived but still memorable fashion, recorded like this by the first-person narrator as he lies in a hospital bed with bandaged eyes after a triffid attack:

“The sky’s simply full of shooting stars,” [a nurse] said. “All bright green. They make people’s faces look frightfully ghastly. Everybody’s out there watching them, and sometimes it’s almost as light as day – only all the wrong colour. Every now and then there’s a big one so bright that it hurts to look at it. It’s a marvellous sight. They say there’s never been anything like it before. It’s a pity you can’t see it, isn’t it? (ch. 1, “The End Begins”)

In fact, it isn’t a pity: it saves his life. It’s soon apparent that the green light from the “shooting stars” has destroyed the sight of everyone who watched them. The narrator describes how he takes the bandages off his eyes and discovers that he’s one of the very few sighted people left in a blinded world: London becomes “The Groping City”, as the title of chapter 3 puts it. The blindness would have been bad enough, but the triffids now begin breaking loose from the farms on which they’re being kept. The green light of the meteor-storm, probably an optical weapon accidentally released by a military satellite, has created a world where chlorophyll is king. Triffids don’t need sight to slash and slay, so blinded humans now have a simple choice: stay in hiding or try to find food and risk being stung to death by one of the triffids invading London in search of prey.

In the second chapter, the narrator looks back to describe the origin and spread of the triffids, and how he came to receive that a sight-preserving dose of triffid-poison in his eyes. Those opening few chapters have scenes and images that have always stayed with me since I first read the book as a kid. There’s the wonder and beauty of the meteor-storm; the horror of sudden, near-universal blindness and the first spate of suicides; the strangeness and deadliness of the triffids; and so on. Here’s one of the memorable images Wyndham conjures with words:

Perhaps Umberto’s plane exploded, perhaps it just fell to pieces. Whatever it was, I am sure that when the fragments began their long, long fall towards the sea they left behind them something which looked at first like a white vapour.

It was not vapour. It was a cloud of seeds, floating, so infinitely light they were, even in the rarefied air. Millions of gossamer-slung triffid seeds, free now to drift wherever the winds of the world should take them… (ch. 2, “The Coming of the Triffids”)

The triffids have been created artificially and mysteriously behind the Iron Curtain and yield a highly valuable vegetable oil. But that raises questions that aren’t answered. Why did they need to walk? Why are they equipped with long and deadly stings? Why are they uncannily intelligent? And how do they nourish themselves once they mature and begin walking? Their tripodic roots can’t dig very deep when they’re at rest and although Wyndham describes how they pull pieces of flesh off the decaying bodies of people they’ve killed, he doesn’t describe their digestive systems.

These unanswered questions mean that The Day of the Triffids is sometimes more like magic realism than hard science fiction. Particularly when the triffids show signs of intelligence, coordination and even cunning. But none of that is apparent when the triffids begin to sprout all over the world after the seeds in that “white vapour” reach the ground. The growing triffids attract curiosity but not wonder or fear. And even when they begin walking and stinging, they seem easy to manage. Thanks to that valuable vegetable oil, they’re soon being farmed in huge numbers. Their whip-stings are deadly, of course, and if the stings are docked, triffids yield less oil. But sighted humans can kept triffids under control easily enough, despite an occasional unlucky accident and the triffids’ unsettling ability to communicate between themselves. They have a kind of intelligence even though they don’t have brains. The narrator is a botanist conducting research on triffids and suffers one of the unlucky accidents, when a triffid lashes at the wire-mesh mask covering his face and a few drops from the poison-sacs reach his eyes.

So he’s in hospital when the meteor-storm lights up skies all around the world for a couple of days. He and a few other fortunates can’t watch the storm for one reason or another, so they keep their sight and have to fight the triffids to have a future. Wyndham describes how bands of survivors come together in various ways and decide on different ways of fighting the triffids. And that’s when the quality of the writing and the power of the imagery take a turn for the worse. The opening few chapters of The Day of the Triffids have always stayed with me since that first reading. I’ve re-read the book several times since then, but on this latest re-reading I found I’d almost completely forgotten what happened in the second half of the book.

But I can recommend it highly all the same. It might not be Wyndham’s best, but the triffids and their menacing ways will be with you for life once Wyndham’s words have become pictures in your head. And more than pictures:

The evening was peaceful, almost the only sounds that broke it were the occasional rattlings of the triffids’ little sticks against their stems. Walter [a triffid-researcher] regarded them with his head slightly on one side. He removed his pipe.

“They’re talkative tonight,” he said. (ch. 2)


Elsewhere other-accessible

Reds in the Head — review of H.G. Wells’ The War of the Worlds (1897)

Leaf Brief

Front cover of What A Plant Knows by Daniel ChamovitzWhat a Plant Knows: A Field Guide to the Senses of Your Garden – and Beyond, Daniel Chamovitz (Oneworld 2012)

This is a brief but burgeoning book, covering a lot of science and a lot of scientific history. Plants stay in one place and don’t seem to suffer pain or discomfort, so they’re good experimental subjects, particularly for introverts. That’s why Charles Darwin devoted even more time to plants than he did to worms and barnacles. Chamovitz describes Darwin’s ingenious experiments and the even more ingenious experiments of the researchers that followed him. Over millions of years the world has set problems of survival for plants; in solving these problems, plants have set puzzles for scientists. How do plants know when to flower and prepare for winter? How do they resist attacks by insects? Or prey on insects? Or invite visits from pollinators? And how do they communicate with each other? The answers aren’t just chemical: they’re electrical too, as research on the world’s most famous carnivorous plant has proved:

Alexander Volkov and his colleagues at Oakwood University in Alabama first demonstrated that it is indeed electricity that causes the Venus flytrap to close. To test the model, they rigged up very fine electrodes and applied an electrical current to the open lobes of the trap. This made the trap close without any direct touch to its trigger hairs … (ch. 6, “What A Plant Remembers”, pp. 147-8)

Acoustics is also at work in the plant kingdom:

In a process known as buzz pollination, bumblebees stimulate a flower to release its pollen by rapidly vibrating their wing muscles without actually flapping their wings, leading to a high-frequency vibration. … In a similar vein, Roman Zweifel and Fabienne Zeugin from the University of Bern in Switzerland have reported ultrasonic vibrations emanating from pine and oak trees during a drought. These vibrations result from changes in the water content of the water-transporting xylem vessels. While these sounds are passive results of physical forces (in the same way that a rock crashing off a cliff makes a noise), perhaps these ultrasonic vibrations are used as a signal by other trees to prepare for dry conditions. (ch. 4, “What A Plant Hears”, pg. 107-8)

All of this is mathematical: a plant is a mechanism that processes not just sun, water and carbon-dioxide, but information from its environment too. But then sun, water and CO2 are all part of that information: sunlight signals plants as well as sustaining them. Its strength and duration are cues for the seasons and time of the day. So is its colour:

By the time John F. Kennedy was elected president, Warren L. Butler and his colleagues had demonstrated that a single photoreceptor in plants was responsible for both the red and far-red effects. They called this receptor “phytochrome”, meaning “plant colour”. In its simplest model, phytochrome is a light-activated switch. Red light activates phytochrome, turning it into a form primed to receive far-red light. Far-red light inactivates phytochrome, turning it into a form primed to receive red light. Ecologically, this makes a lot of sense. In nature, the last light a plant sees at the end of the day is far-red, and this signifies to the plant that it should “turn-off”. In the morning it sees red light and it wakes up. In this way a plant measures how long ago it last saw red light and adjusts its growth accordingly. (ch. 1, “What A Plant Sees”, pg. 21-2)

There’s an obvious analogy with a computer automatically turning itself off and on, which would make phytochrome and its associated chemicals a kind of hardware created by the software of the genes. Plants share some of that software with human beings: in one fascinating section, Chamovitz discusses the links between healthy plants and sick people:

The arabidopsis [A. thaliana, mustard plant] genome contains BRCA, CFTR, and several hundred other genes associated with human disease or impairment because they are essential for basic cellular biology. These important genes had already evolved 1.5 billion years ago in the single-celled organism that was the common evolutionary ancestor to both plants and animals. (ch. 4, “What A Plant Hears”, pg. 105)

What a Plant Knows stimulates human minds as it discusses plant senses. It’s one of the best briefest, or briefest best, books on science I’ve ever read, packing a lot of history and scientific information into six chapters. Plants don’t move much, but they’re a very lively topic and botany is a good way to understand and appreciate biology and scientific research better.