The natural history account of analogy will consider the status in less advanced stages of human development, and the evolution of this form of thought, which scientists to-day use only with the greatest caution, and to which they at best assign but a limited and corroborative value. It will appear that analogy is dominant in primitive types of thought; that it has an important cultural history; and has left an unmistakable impress upon many beliefs of our civilization, marked as obsolete, perhaps, in the dictionary of the cultured, but current still in the parlance of average and untutored humanity. II The great law of apperception, teaching that we observe according to our inherited capacities and our acquired experience, that we in a very real sense create the world in which we live, explains the difficulty of realizing modes of thought strikingly different from our own, either as more primitive, or more complex, or as based upon other perspectives of the social, intellectual, and ethical rules that guide thought and conduct. To the supremely civilized citizen of the nineteenth century, the mental life of one who has hardly a firm hold on the first round of the ladder of civilization is naturally somewhat incomprehensible. An illustration of the conspicuous contrast, though doubtless amidst an inherent community, of the thought-habits of untutored and of cultured man, may suggest the direction and the nature of the evolutionary development that separates, yet binds, the one and the other. Prominent among such contrasts is the different standing assumed by the facts and reasonings of science in primitive and in highly civilized life; and an important part of this difference may be viewed as the shifting of the position occupied by the argument by analogy. Deeper than the language of words, and underlying their use and formation, is the habit of comparing object with object, of tracing resemblances and noting contrasts. It would seem that in the primitive use of this process there is lacking the distinction between the resemblances more strictly inherent in the objects and those originating in the mode of viewing them; subject and object are still merged in a vaguer realm of perception where myth and science, poetical fiction and evident fact, are as yet undifferentiated and mingle without let or hindrance. The savage frames his world by the realization of simple fancies suggested by slight analogies, where the man of culture examines the objective causes of phenomena under the guidance of scientifically established principles and accurate logic. Fortunately, however, for our power of realizing bygone mental traits, these forms of belief still find currency as survivals, in Mr. Tylor's apt words, "of the lower culture which they are of to the higher culture which they are in." We thus can understand the belief we no longer share; we can appreciate as suggestive myth or far-fetched analogy what to our ancestors may have been a plausible