The experimenter’s is a curious and special talent. Armed with a tea canister and some wire, with silk, a little sealing-wax, and two or three jam-pots, Faraday marched forth against the mysterious powers of electricity. He returned in triumph with their captured secrets. It was just a question of suitably juxtaposing the wax, the glass jars, the wires. The mysterious powers couldn’t help surrendering. So simple—if you happened to be Faraday.

And if you happened to be Sir J. C. Bose, it would be simple, with a little clockwork, some needles, and filaments, to devise machines that would make visible the growth of plants, the pulse of their vegetable “hearts,” the twitching of their nerves, the processes of their digestion. It would be so simple—though it cost even Bose long years of labor to perfect his instruments.

At the Bose Institute in Calcutta, the great experimenter himself was our guide. Through all an afternoon we followed him from marvel to marvel. Ardently and with an enthusiasm, with a copiousness of ideas that were almost too much for his powers of expression and left him impatiently stammering with the effort to elucidate methods, appraise results, unfold implications, he expounded them one by one. We watched the growth of a plant being traced out automatically by a needle on a sheet of smoked glass; we saw its sudden, shuddering reaction to an electric shock. We watched a plant feeding; in the process it was exhaling minute quantities of oxygen. Each time the accumulation of exhaled oxygen reached a certain amount, a little bell, like the bell that warns you when you are nearly at the end of your line of typewriting, automatically rang. When the sun shone on the plant, the bell rang often and regularly. Shaded, the plant stopped feeding; the bell rang only at long intervals, or not at all. A drop of stimulant added to the water in which the plant was standing set the bell wildly tinkling, as though some record-breaking typist were at the machine. Near it—for the plant was feeding out of doors — stood a large tree. Sir J. C. Bose told us that it had been brought to the garden from a distance. Transplanting is generally fatal to a full-grown tree; it dies of shock. So would most men if their arms and legs were amputated without an anesthetic. Bose administered chloroform. The operation was completely successful. Waking, the anesthetized tree immediately took root in its new place and flourished.

But an overdose of chloroform is as fatal to a plant as to a man. In one of the laboratories we were shown the instrument which records the beating of a plant’s “heart.” By a system of levers, similar in principle to that with which the self-recording barometer has made us familiar, but enormously more delicate and sensitive, the minute pulsations which occur in the layer of tissue immediately beneath the outer rind of the stem, are magnified—literally millions of times—and recorded automatically in a dotted graph on a moving sheet of smoked glass. Bose’s instruments have made visible things that it has been hitherto impossible to see, even with the aid of the most powerful microscope. The normal vegetable “heart beat,” as we saw it recording itself point by point on the moving plate, is very slow. It must take the best part of a minute for the pulsating tissue to pass from maximum contraction to maximum expansion. But a grain of caffeine or of camphor affects the plant’s “heart” in exactly the same way as it affects the heart of an animal. The stimulant was added to the plant’s water, and almost immediately the undulations of the graph lengthened out under our eyes and, at the same time, came closer together: the pulse of the plant’s “heart” had become more violent and more rapid. After the pick-me-up we administered poison. A mortal dose of chloroform was dropped into the water. The graph became the record of a death agony. As the poison paralyzed the “heart,” the ups and downs of the graph flattened out into a horizontal line halfway between the extremes of undulation. But so long as any life remained in the plant, this medial line did not run level, but was jagged with sharp irregular ups and downs that represented in a visible symbol the spasms of a murdered creature desperately struggling for life. After a little while, there were no more ups and downs. The line of dots was quite straight. The plant was dead.

The spectacle of a dying animal affects us painfully; we can see its struggles and, sympathetically, feel something of its pain. The unseen agony of a plant leaves us indifferent. To a being with eyes a million times more sensitive than ours, the struggles of a dying plant would be visible and therefore distressing. Bose’s instrument endows us with this more than microscopical acuteness of vision. The poisoned flower manifestly writhes before us. The last moments are so distressingly like those of a man, that we are shocked by the newly revealed spectacle of them into a hitherto unfelt sympathy.

Sensitive souls, whom a visit to the slaughter-house has converted to vegetarianism, will be well advised, if they do not want to have their menu still further reduced, to keep clear of the Bose Institute. After watching the murder of a plant, they will probably want to confine themselves to a strictly mineral diet. But the new self-denial would be as vain as the old. The ostrich, the sword swallower, the glass-eating fakir are as cannibalistic as the frequenters of chop-houses, take life as fatally as do the vegetarians. Bose’s earlier researches on metals—researches which show that metals respond to stimuli, are subject to fatigue and react to poisons very much as living vegetable and animal organisms do—have deprived the conscientious practitioners of ahimsa of their last hope. They must be cannibals, for the simple reason that everything, including the “inanimate,” is alive.

This last assertion may seem —such is the strength of inveterate prejudice —absurd and impossible. But a little thought is enough to show that it is, on the contrary, an assertion of what is a priori probable. Life exists. Even the most strict and puritanical physicists are compelled, albeit grudgingly, to admit the horridly disquieting fact. Life exists, manifestly, in a small part of the world we know. How did it get there? There are two possible answers. Either it was, at a given moment, suddenly introduced into a hitherto completely inanimate world from outside and by a kind of miracle. Or else it was, with consciousness, inherent in the ultimate particles of matter and, from being latent, gradually extrinsi-cated itself in ever-increasingly complicated and perfect forms. In the present state of knowledge—or ignorance, put it how you will —the second answer seems the more likely to be correct. If it is correct, then one might expect that inanimate matter would behave in the same way as does matter which is admittedly animate. Bose has shown that it does. It reacts to stimuli, it suffers fatigue, it can be killed. There is nothing in this that should astonish us. If the conclusion shocks our sense of fitness, that is only due to that fact that we have, through generations, made a habit of regarding matter as something dead; a lump that can be moved, and whose only real attribute is extension. Motion and extension are easily measured and can be subjected to mathematical treatment. Life, especially in its higher, conscious forms, cannot. To deny life to matter and concentrate only on its measurable qualities was a sound policy that paid by results. No wonder we made a habit of it. Habits easily become a part of us. We take them for granted, as we take for granted our hands and feet, the sun, falling downstairs instead of up, colors, and sounds. To break a physical habit may be as painful as an amputation; to question the usefulness of an old-established habit of thought is felt to be an outrage, an indecency, a horrible sacrilege.

Crains dans le mar aveugle un regard qui t’epie.

It was all very well from a poet. One could smile indulgently at a pleasing and childish fancy. But when it came to laboratory experiments and graphs, things, it was felt, were getting more serious. It was time to make a protest.

Personally, I make no protest. Being only a literary man, and not one of those physicists whose professional interest it is to keep matter in its place, with only such attributes as render it amenable to mathematics, I am delighted. I love matter, I find it miraculous, and it pleases me when a serious man, like Bose, comes along and gives it a new certificate of merit.