Page:The Harveian oration, 1873.djvu/70

found, did not, he speaks himself as being 'adeo novum et inauditum ut verear ne habeam inimicos omnes homines;' and finally, the argument, which though it be indirect, every morphologist will allow to be not only most exquisite, but also most convincing, for the circulation in the adult warm-blooded animal, drawn from the relations held by the venae cavae to the efferent arteries in the embryo, and in all animals with but a single or an imperfectly divided ventricle, 'unus duntaxat ventriculus vel quasi unus,' and of which I would recommend every one who is not already acquainted with it, to gain a knowledge from the seventh chapter of the same book, was his, and his alone. With regard to all these points, with regard, that is, to the circulation as a whole; with regard to the actual demonstration and exhibition of it as opposed to mere guessing about it; with regard to all, or nearly all, sound reasoning as to any large portion of it, Harvey might have said with Lucretius,