Sir Francis Darwin

“ It is not difficult to describe the ideals of science, but it is only too easy to fall short of them. It is easy for instance to become a sectarian, to belong to a school, and to be literally incapable of fairness towards the opposition. This was plainly seen at the incoming of evolution, and it was one of the many glories of Sir Charles Lyell that he could accept the ‘Origin of Species,’ and that, in the words of Hooker, he could under-pin his work with an evolutionary foundation and find his edifice stronger than ever. ”

“ I have been compelled to use the words ‘science’ and ‘scientific’ because these terms have become firmly adherent to a group of subjects such as Physics, Chemistry, Geology, Botany, etc., and cannot now be detached from them. Unfortunately ‘scientific’ is used in another sense as implying accuracy of experimental method and in deduction from results. So that in calling ourselves scientific men we run the risk of seeming to claim a monopoly of method, as though we pretended to be somehow superior to the trained workers in other branches. ”

“ The lower country is all pasture, where we can wander at will, and delight in the many beautiful trees: the fresh green elms, the vernal yellow of the oak (which lingers in varying degrees behind some of its companions, but does not deserve Tolstoy’s epithet ‘maussade’) , and the grey anatomy of the timid ash, whose black buds are still getting up their courage. We do not owe the trees in the meadows to landowners with a taste for natural beauty, but to the cattle that must have shade. ”

“ The great revolution that breaks out in the spring, when the store-houses of the plant pour nutriment into the numberless awakening buds is a miracle annually repeated in the endless procession of life. ”

“ The astronomer measures out his work, not by miles, but by the inconceivable distance that light can travel in a year. The man who studies bacteria measures by the micron, 25,000 of which go to the inch. To me there is more fascination in the very small than in the other extreme. It is wonderful to think that a plant—a big tree for instance—is made up of countless millions of cells, each of which was built by a minute protoplasmic body, which Huxley has compared to a delicate Ariel imprisoned like Shakespeare’s sprite in an oak-tree. ”

“ I should like to express my appreciation of the honour done me in asking me to give the first Galton lecture. In many ways I am a bad choice, since I have had no share in his science of eugenics, neither has my research-work been directly connected with evolution. I can only hope that in consideration of my delight in the fibre and flavour of Galton’s mind, with its youth, its charm of humour, and its ever-springing originality and acuteness,—I say that I hope these considerations may excuse me for having undertaken an office for which I am in so many ways unfitted. ”

“ It seems to me that the education of one’s youth becomes clear to one in middle life and old age; and that what one sees in this retrospect may be worth some rough record and some sort of criticism. One may, of course, be mistaken about what was bad and what was good in one’s training. But the experience of the pupil is, at the least, one aspect of the question. And I think that the memories of how we were taught is something much more definite and vivid, something that can be more easily made interesting to one’s readers, than the generalised experience gained as a teacher. ”

“ I think, too, that the human interest of science should always be encouraged. I mean that those classical experiments, by which great men have advanced human knowledge, should be shown: and performed moreover by the original methods, e.g. the discoveries of Black, Priestley and Cavendish.
After all, the real fun of science begins when one finds out something that was not known before. This is what is rather pompously called original research. It is interesting to see in my father’s life how the sporting instinct gave way to the love of discovery. ”

“ This is obvious, but we cannot say how far the bravery of the tune puts strength into tired legs, and this would be incitement,—and how far it is the unappeasable rhythm that forces the men to keep going, and this may perhaps be called regulation. There are occasions when the trumpet comes as a signal to troops waiting to make some sublime effort, and where the fierce imperious sound has a lift and a sting which perhaps no pre-concerted signal of a weaker type could give. ”

“ To those who have never made experiments on plants it may seem that ‘picturesque’ is an odd term to apply to laboratory methods. But to an experimentalist the adjective does not seem overstrained. There is not merely the pleasure of seeing a prediction verified—that may be experienced in more everyday matters. There is a peculiar delight in the discovery of a method of revealing some detail in the natural history of living things. I remember vividly the pleasure which I felt when I first tried the experiment on Sorghum, described in the essay on the Movements of Plants in this volume. ”

“ The domestic and intimate parts of life are the most lastingly happy, and thus it is that an imaginary existence, which in some moods seems to be unbearably humdrum, harmonises with the best parts of our own life. The quiet winds that blow through Miss Austen’s imagined land cannot turn windmills or overset tall trees, but they can set going those tunelike chains of simple experiences written on our memories by the quiet and happy parts of life. ”

“ I now pass on to a different subject, the all-important process on which the life of green plants depends, an act therefore by which our own existence and that of all other animals is conditioned. I mean the process known as assimilation. This is the truly miraculous feat of using as a source of food the carbonic acid gas (CO2) which exists in minute quantities in the atmosphere. The plant is in fact a carbon-catching machine, and the machine is driven by the energy of the sun, and can therefore only work in light. ”

“ One would like to know more of the conception of science formed by the unscientific. They are probably unaware that science is eminently practical in asserting that only to be true which rests on wide and accurate generalisation. It is also practical wisdom to hold, as science does, that truth is temporary and relative, and is in fact merely the best conclusion that can be drawn in the present state of knowledge. To many people science is wearisome and somewhat ridiculous, and these qualities appear in the naturalist of fiction. ”

“ The point on which I wish to insist is, that it is impossible to explain on any theory of the direct action of gravity why the three orders of roots have three distinct modes of growth. They may remind us of three generations, grandfather, father, and son, all of one blood and yet behaving towards the universe in three distinct ways—a fact not unknown in human society. ”

“ I am glad to think that there are points in which science, literature, and art are equally excellent—namely, in giving to mankind some of the deepest pleasures of which he is capable, in making him realise the wonder, the beauty and the romance of the world. I spoke of the power of science in knitting together isolated facts into a p. 148theory. And such a theory may become so all embracing that it is called a law of nature. Those great generalisations, the laws of gravity and the laws of evolution, or the laws of chemical combination, have a beauty and dignity which appeal to everyone. ”

“ We ask ourselves why hollow cylinders occur so commonly in vegetable architecture. That rough teacher, the struggle for life, has taught plants that a tube is, mechanically speaking, the best way of arranging a limited amount of formative or building material. The hemlock or the reed can thus make stalks of ample strength and at comparatively slight cost. There is romance in the fact that plants made tubular stems to their own private profit for unnumbered ages before the coming of man: the hollow reeds waiting all these aeons till Pan should come and make them musical. ”

“ Not only does the student of to-day get good practical teaching, but he has the great advantage of being under professors who are generally engaged in original work. And if a man can afford the time to stay up after his degree, he is encouraged and helped to undertake research. If practical teaching is the foundation, the protoplasm as it were, of scientific education, I am sure that original work is its soul or spirit. ”

“ But this colour-dance of the two plants is beautiful in its own way. Now we have reached the rim of the valley, and look over into a new country, with many red patches of ploughed land, and sheep in the treeless fields instead of cattle. Here the skylark sings, who is something of a stranger to us dwellers in the valley. The same is true of the yellow-hammer, whose hot and dusty voice is less familiar there. To one inland bred the seagulls feeding in the ploughed lands are a delight. ”

“ Or we can watch under the microscope minute free-swimming plants rushing across the field of view, all one way, like a flock of little green sheep that we can drive to and fro with a ray of light for a sheep-dog. ”

“ I have never got over the want of fluent French and German, and I resent the fact that I should be condemned to feel like a child or a boor in the presence of foreigners. We are taught Latin and Greek because, as we are assured, they introduce us to the finest literature in the world. To most boys they do nothing of the kind, and are an intolerable burden. French and German taught by the oral methods really do introduce us to whole nations of minds that are otherwise cut off from us ”

“ In this frame of mind one longs for a new Miss Austen more than for a new symphony of Beethoven, or a play of Shakespeare, and much more than for the lost books of Livy, which, indeed, I, for one, do not desire at all.
The power of endlessly re-reading the novels of Miss Austen is the only advantage conferred by a bad memory. ”

“ As his vitality ebbed away his affection only showed the stronger. He wished to live, and he felt that his power of work and his enjoyment of life were as strong as ever, but his resignation to the sudden end was complete and beautiful. ”

“ Gravitation is nothing more than a sign-post or signal to the plant—a signal which the plant interprets in the way best suited to its success in the struggle for life, just as what we see or hear gives us signals of changes in the exterior world by which we regulate our conduct. ”

“ There are innumerable cases proving the devotion of dogs—a passion surviving the master’s death, and prolonged until the dog himself dies. Such is the story of the heroic dog seen to watch his master’s dead body in South America, keeping the vultures off it, and only allowing himself an occasional rush to the river for water, until he too died. What is there here but a passion of love? p. 226We may call it instinct, but what is the love of a human mother?
A dog differs from his master in not taking offence; you may tread on his tail and he will only apologise for being in your way. ”

“ But in science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs. Not the man who finds a grain of new and precious quality, but to him who sows it, reaps it, grinds it and feeds the world on it. This is true of this very Macmillan’s Magazine article. Who would know of these admirable views on Hereditary Genius and Eugenics, if this were Galton’s only utterance? This is the grain which has increased and p. 25multiplied: and it is to-day familiar nutriment, and is now assiduously cultivated by the Eugenics Education Society. ”

“ Another bird that moves one in a very different way is the robin, of whom it is hard to say whether he has more of tears or smiles in his recitative. In comparison to the night-jar he seems like a civilised human soul who has quite modern sorrows, and has half forgotten them in quiet contentment with the autumn sunshine. ”

“ This side of Galton’s work is, in the judgment of many, his greatest claim to distinction as a master in the science of heredity. How far this is so I shall not attempt to pronounce. It is possibly still too soon to do so. Nevertheless, it seems to me that Mendelism, the main facts of which are no longer in dispute, will compel the world (if it has not already done so) to look at variation in a very different way to that of Galton. The Mendelian does not, and never will, look at variation merely as a “deviation expressed in statistical units.” ”

“ The successful man of science is one to whom familiar objects suggest those prophecies generally known as theories. My father was remarkable for not letting what seem to be trifling facts pass without suggesting to him a theory. The flies that are caught on the sundew must have been seen by innumerable people—but it remained for him to prove the truth of his guess that some plants possess digestive ferments like our own, and live on the insects they catch and digest. ”

“ It is this power of correcting the line of growth whenever it deviates from the upright that enables the pine tree to grow straight upwards. And this is what I meant when I said that its habit of growth depends on regulated curvature, to which no one can refuse the name of movement.
The pine and the seedling have, in fact, a wonderful kind of sensitiveness—a sensitiveness to the force of gravity. To those accustomed to think of Mimosa as the sensitive plant par excellence my words may sound strange. But the sensitiveness of Mimosa is crude by comparison with that of the seedling. ”

“ If so he was wise, for it certainly does not lend itself to the manner which Stevenson adopts towards dogs. No doubt I may be led into sentimentality and general wearifulness in attempting to describe what seems to me the most striking characteristic of dogs—their great and enduring power of loving. It may be that “the day of an intelligent small dog is passed in the manufacture and laborious communication of falsehood.” But he does not lie when he says quite plainly how greatly he loves his master. ”

“ Sharp has done wonderful things; he is like a naturalist who should discover that we are unconsciously surrounded by whole races of beautiful things as unknown to us as elves and fairies. In the Commemoration Service we speak gratefully of all those who “found out musical tunes.” If ever a man deserved remembrance for literally finding out tunes it is Mr. Sharp.
But to return to the musical instruments of the Morris dancers—the Pipe and Tabor. I am told that the little drum on which the piper accompanies his tune should be pronounced ‘tabber.’ I have no doubt this is right. ”

“ No one should ever be able to finish the history of his own education, because it is co-extensive with his life. In my father’s autobiography written shortly before his death, he attempts to sum up the effect of this self-education on himself, both as concerns his experimental research and also in regard to the literary part of his work. An instance of his modest estimate of his own mental progress, is so characteristic that I shall venture to quote it. ”