He had no idea of claiming for it the rank of a fact of science upon which he, or anybody else, might build a system.
Nor are the modern assertors of evolution able to establish a single instance of the chemical origin of life at the present day; though thousands of experiments have been made attempting that exploit, by English, French, and German chemists during the last forty years.

Nor has a single case of the transmutation of species ever been observed in wild animals or plants; nor has any change of species been produced in tame ones by domestication or culture.

No naturalist has seen a community of apes in the process of improvement toward manhood; nor has any philologist described the first attempts of the monkeys toward the articulation of language, or the manufacture of clothing, unless we except Mr.Lemuel Gulliver's interesting account of the Yahoos.

It must be acknowledged that the animals described by that accurate observer, and graphic describer, approach more nearly to those required by Mr.
Darwin's theory than any ever seen before, or since.

Hence it is greatly to be desired that some scientific evolutionists should thoroughly explore those regions, investigate the manners and customs of the Yahoos with the enthusiasm of a true Darwinian, and minutely describe those interesting features which would enable us to decide whether they are monkeys progressing to manhood, or men brutalizing into apehood; but which Mr.Gulliver's lack of scientific enthusiasm for evolution prevented him from closely examining.