But until the scientific standing of Mr.Gulliver's Yahoos is determined, the theory of evolution must be assigned to the mountains of speculations, big with expectation, but which yet await the birth of their first fact.
Mr.Darwin indeed alleges the results of domestication upon animals and plants, as producing permanent varieties as different in appearance as many which are ranked by naturalists as different species, and he alleges that Natural Selection carries on a similar process of improvement among wild animals and plants.
But the facts of domestication are most emphatic in refusing to acknowledge any change of species of the most carefully bred animals.
The efforts of breeders have been exerted for thousands of years upon the dog, the ox, the goat, the sheep, and the ass, the horse, and the camel, among animals; and upon the goose, the duck, and the pigeon, and for a shorter time, but still for two thousand years, upon the common barn-door poultry.

Farmers in all lands, since the deluge, have used their best exertions to improve the cereals, the fruit trees, the vines, and root crops, and vegetables, and the result has been some valuable modifications of size, shape, flavor, and fertility; but in no case whatever has any change of species been effected.

All the efforts of breeders have not succeeded in making the horse specifically different from the noble animal described in the Book of Job four thousand years ago.

The sheep has not become a goat, nor the goat a sheep, by all the pains of all the shepherds since the days of Abel.

The ass displays not the least tendency to become a horse, nor the goat to become a cow.