It is obvious that, although Harvey in dealing with the blood does not forego the use of the phrases used by the ancient master in dealing with the semen, nevertheless, the entities recognized by Harvey are not only fewer than those of Aristotle, but are differently disposed within the draperies of Aristotelian language. Harvey's entities are simply the innate heat _alias_ the blood, and the soul which dwells therein; but he sincerely takes himself to be an interpreter of Aristotle's words, as appears a second time from an echo of those words which we meet in an earlier Exercise of Harvey's treatise On Generation. Here, pleading that it is true that the soul is in the blood, Harvey refers to Aristotle by name and immediately says:-- "Indeed, if he is constrained by the truth to acknowledge that there is a soul in an egg, even in a wind-egg;[368] and that in the semen and the blood also there is found something which is divine and analogous to the element of the stars and is vicarious of the omnipotent Creator; and if certain of the modems truly say," etc., etc.[369] These zealous words show Harvey drawn into statements by no means warranted by the text of Aristotle. We have seen that the Aristotelian heaven was uncreated;[370] and, whatever Harvey in his day may have thought, no "omnipotent Creator" is revealed by more modern study of the Aristotelian philosophy. Whatever inferences Harvey may have drawn from Aristotle's words, Aristotle does not "acknowledge"[371] that the analogue of the ether exists in the blood. Moreover, when in Harvey's Exercise On the Innate Heat that analogue of the element of the stars which Aristotle associated with the soul is identified by Harvey with the soul itself, the change is almost as great as if one should declare that protoplasm is life, instead of styling it with Huxley "the physical basis of life." In a third Exercise of the treatise On Generation, the earliest of the three, Harvey had dealt in a better and more characteristic way with the analogue of the ether; though here, too, his exposition gives no accurate idea of Aristotle's doctrine. In discussing Aristotle's opinion as to how the semen of the cock causes the formation of the embryo Harvey says of Aristotle:--