'With respect to plants as animals, we are wrong in speaking as if the object of life were only the bequeathing of itself. The flower is the end and proper object of the seeds, not the seed of the flower. The reason for the seed is that flowers may be, not the reason of flowers that seeds may be. The flower itself is the creature which the spirit makes; only, in connection with its perfectedness, is placed the giving birth to its successor.' (II, 60.) For Ruskin the true meaning of life in all its stages lay not in the maintenance of physical continuity from generation to generation, but in the ever-renewed, ever more enhanced revelation of the spirit. He was never for a moment in doubt regarding the inevitable effect of such an evolutionary theory as Darwin's on the general social attitude of humanity. Men would be led, he realized, to see themselves as the accidental products of an animal nature based on the struggle for existence and the preservation of the species. Enough has been said to stamp Ruskin as a reader in the book of nature, capable of deciphering the signature of the spirit in the phenomena of the sense-world. * Outwardly different from Ruskin's and yet spiritually comparable, is the contribution made by his older contemporary, Luke Howard, to the foundation of a science of nature based on intuition. Whereas Ruskin throws out a multitude of aphoristic utterances about many different aspects of nature, which will provide us with further starting-points for our own observation and thought, Howard is concerned with a single sphere of phenomena, that of cloud formation. On the other hand, his contribution consists of a definite discovery which he himself methodically and consciously achieved, and it is the content of this discovery, together with the method of research leading to it, which will supply us ever and again with a model for our own procedure. At the same time, as we have indicated, he will help us to become familiar with another side of Goethe, and to widen our knowledge of the basic scientific concepts formed by him. Anyone interested to-day in weather phenomena is acquainted with the terms used in cloud classification - Cirrus, Cumulus, Stratus, and Nimbus. These have come so far into general use that it is not easy to realize that, until Howard's paper, On the Modification of Clouds, appeared in 1803, no names for classifying clouds were available. Superficially, it may seem that Howard had done nothing more than science has so often done in grouping and classifying and naming the contents of nature. In fact, however, he did something essentially different. In the introduction to his essay, Howard describes the motives which led him to devote himself to a study of meteorological phenomena: