In this case of Gratio Kelleia and his children is seen the tendency to reproduce the parent stock, and also to perpetuate the variation which so unaccountably appeared. That tendency to perpetuate the variation was very strong, even though these persons with the six fingers and toes, or who only inherited the deformity in part, intermarried with persons ordinarily formed. What would have been the result had the two eldest boys of Salvator taken it into their heads to marry their first cousins, the two first girls of George? It will be remembered that these were all of the abnormal type of their grandfather. Is it not most likely that had these people married and their descendants continued to intermarry with each other, that a new variety of men having six fingers and six toes would have been the result? The second case I quote from Huxley gives us every reason to believe that such would have been the result: In the year 1791 there was a farmer of the name of Seth Wright, in Massachusetts, who had a flock of sheep, consisting of a ram and some twelve or fifteen ewes. Of the flock of ewes, one at the breeding-time bore a lamb which was singularly formed; it had a very long body, very short legs, and those legs were bowed. In the part of Massachusetts where Seth Wright lived, the fields were separated by fences, and his sheep, which were active and robust, would roam abroad, and without much difficulty would jump over the fences into other people's farms. As a matter of course this gave rise to all sorts of quarrels, bickerings and contention among the farmers of the neighborhood; so it occurred to Seth Wright, if he could obtain a breed of sheep with bandy legs like the one which had so strangely appeared in his flock, it would be to his advantage, as they would not be able to jump over the fences so readily. He acted upon that idea. He killed his old ram, and as soon as the young one arrived at maturity he bred exclusively from him. The result was that all the offspring were like the male parent or female parent, there was no mixing in the offspring the peculiarities of the parents, they were either pure "Ancons"--the name given to the new variety--or pure, ordinary sheep. In consequence of this the farmer in a very few years was able to get a considerable flock of this short-legged variety of sheep and a large number of them were soon scattered throughout Massachusetts. Here is the case then where the tendency to perpetuate a variation culminated in the production of a new variety. And, indeed, this is what is perpetually going on with our domesticated animals,--by what we may call selective breeding; and it is going on, it is claimed by evolutionists, in a natural state, that is, where man's interference does not effect it; in other words, variations are perpetuated by means of what Mr. Darwin has called "natural selection."