irresistibly on until they have bathed the roots of the solitary flower on the highest Alp. It is this divine method of growth which Nature opposes to our mechanisms; it is this inexhaustible life, overflowing in unconsciousness and boundless fulness, that she forever reveals. The truth which underlies these two great facts needs no application to human life. Blessed, indeed, are they who live in it, and have caught from it something of the joy, the health, and the perennial beauty of Nature. Chapter VI Earth and Sky In nature, as in art, it is the sky which makes the landscape. Given the identical fields, woods, and retreating hills, and every change of sky, every modulation of light, will produce a new landscape; in light and atmosphere are concealed those mysteries of colour, of distance, and of tone which clothe the changeless features of the visible world with infinite variety and charm. This fruitful marriage of the upper and the lower firmaments is perhaps the oldest fact known to men; it was the earliest discovery of the first observer, it still is the most illusive and beautiful mystery in nature. The most ancient mythologies began with it, the latest books of science and natural observation are still dealing with it. Myths that are older than history portray it in lofty symbolism or in splendid histories that embody the primitive ideals of divinity and humanity; the latest poets and painters would fain touch their verse or their canvas with some luminous gleam from the heart of this perpetual miracle. The unbroken procession of the seasons changes month by month the relations of earth and sky; day and night all the water-courses of the world rise in invisible moisture to a fellowship with the birds that have passed on swift wing above their currents; the great outlying seas, that sound the notes of their vast and passionate unrest upon the shores of every continent, are continually drawn upward to swell the invisible upper ocean which, out of its mighty life, feeds every green and fruitful thing upon the bosom of the earth. This movement of the oceans upon the continents through the illimitable channels of the sky is, in some ways, the most mysterious and the most sublime of those miracles which each day testify to the presence and majesty of that Spirit behind Nature of whom the greatest of modern poets thought when he wrote: Thus at the roaring loom of time I ply And weave for God the robe thou seest Him by.