But the garden has no less also a scientific interest. Fresh species of plants are continually enriching our flower-beds, and botanists are constantly searching the wildest and most remote corners of the world on behalf of the English stove-house, conservatory, and garden. They endure untold hardships, and risk many dangers, if only they may secure some new treasure. Often they have caught deadly fever or met with fatal accidents in their search, and, true martyrs of science as they are, they pass away forgotten, except perchance when some unwonted designation of a plant may recall, not their memory indeed, but their name. But as one drops off, another will succeed; and so, among far coral islands of the Pacific, in the tropical recesses of a South American forest, in the heart of Asiatic mountains, or the unexplored mysteries of New Guinea, these lovers of nature are at work, labouring for our pleasure and instruction, and procuring for us new forms of vegetable life and beauty. And meanwhile science is working at home in another and a happier way. Not content with finding new species of plants, she is for ever developing fresh varieties. The art is no new one, and in old days the simpler minds of men were not quite sure of its propriety. It was unnatural, they used to say. It is in vain that Polixenes tells Perdita that there is an art that does mend nature, and, therefore, is nature. She evidently thinks it all sophistry, and not a gillyflower will she have. “I’ll not put The dibble in the earth to set one slip of them.” And so, too, Andrew Marvell’s mower complains of the gardener that “The pink grew then as double as his mind; The nutriment did change the kind; With strange perfumes he did the roses taint, And flowers themselves were taught to paint.” He thinks it a wicked extravagance, as it certainly was, to sell a meadow for the sake of a tulip root, and he thinks it an absurdity, as it certainly was not, that we should have brought the “Marvel of Peru” over so many miles of ocean; but all this might be forgiven, but not the “forbidden mixtures” which grafting and hybridizing have brought about. Meanwhile, as we are now untroubled by such scruples, we may not only enjoy the results of the art of the skilful florist, but may even take an intelligent interest in the art itself. It lets us into many secrets of nature. It helps to explain problems of much higher significance than the brief existence of a garden flower. It makes us understand, in some small degree, how, in every form of life, a higher type may be produced from one of inferior order. And the results are really wonderful. It is difficult to know what class of plants has in late years most profited by the artful nature, or unnatural art, of the skilful gardener; but certainly, some of the most striking successes have been among roses, clematis, begonias, and rhododendrons.