animals--we must conclude that there is a line between what selection can and what it can not do. We must conclude, with all the scope and power that can be given to natural selection, that Nature has not developed a higher and differently organized animal out of a lower and inferior type--has not made new species by the process called evolution, because the infinite God has not commissioned Nature to do that thing, but has reserved it unto himself to make special creations. Do not all that we know of the animal kingdom--all that naturalists have accumulated of facts and all that they concede to be the absence of facts--show that there is a clear and well-defined limitation to the power of natural selection, as well as to the power of that other agency which is called sexual selection? Grant that this agency of natural selection began to operate at a period, the commencement of which is as remote as figures can describe; that the struggle for life began as soon as there was an organized being existing in numbers sufficiently large to be out of proportion to the supply of food; that the sexual selection began at the same time, and that both together have been operating ever since among the different species of animals that have successively arisen and successively displaced each other throughout the earth. The longer we imagine this period to have been, the stronger is the argument against the theory of evolution, because the more numerous will be the absences of the gradations and transitions necessary to prove an unbroken descent from the remote prototype which is assumed to have been the first progenitor of the whole animal kingdom. Upon the hypothesis that evolution is a true account of the origin of the different animals, we ought practically to find no missing links in the chain. The fact is that the missing links are both extremely numerous and important; and the longer the period assumed--the further we get from the probability that these two agencies of natural and sexual selection were capable of producing the results that are claimed for them--the stronger is the proof that a barrier has been set to their operation, and the more necessary is it to recognize the line which separates what they can from what they can not do. Let us now see what is the state of the proof. It may assist the reader to understand the Darwinian pedigree of man if I present it in a tabulated form, such as we are accustomed to use in exhibiting to the eye the pedigree of a single animal. Stated in this manner, the Darwinian pedigree of man may be traced as follows: