"If you breed from the male and female of the same race, you of course have offspring of the like kind, and if you make the offspring breed together, you obtain the same result, and if you breed from these again, you will still have the same kind of offspring; there is no check. But if you take members of two distinct species, however similar they may be to each other, and make them breed together, you will find a check. If you cross two such species with each other, then—although you may get offspring in the case of the first cross, yet, if you attempt to breed from the products of that crossing, which are what are called hybrids— that is, if you couple a male and a female hybrid—then the result is that in ninety-nine cases out of a hundred you will get no offspring at all; there will be no result whatsoever.
"The reason of this is quite obvious in some cases; the female hybrids, although possessing all the external appearances and characteristics of perfect animals, are physiologically imperfect and deficient in the structural parts of the reproductive elements necessary to generation. It is said to be invariably the case with the male mule, the cross between the ass and the mare; and hence it is that although crossing the horse with the ass is easy enough, and is constantly done as far as I am aware, if you take two mules, a male and a female, and endeavor to breed from them, you get no offspring whatever; no generation will take place. This is what is called the sterility of the hybrids between two distinct species." (Huxley, "On the Origin of Species." p. 212.) He continues:
"Thus you see that there is a great difference between 'mongrels,' which are crosses between distinct races, and 'hybrids,' which are crosses between distinct species. The mongrels are, so far as we know, fertile with one another. But between species, in many cases, you cannot succeed in obtaining even the first cross; at any rate it is quite certain that the hybrids are often absolutely infertile one with another.
"Here is a feature, then, great or small as it may be, which distinguishes natural species of animals. Can we find any approximation to this in the different races known to be produced by selective breeding from a common stock? Up to the present time the answer to that question is absolutely a negative one. As far as we know at present, there is nothing approximating to this check. In crossing the breeds, between the fantail and the pouter, the carrier and the tumbler, or any other variety or race you may name—so far as we know at present—there is no difficulty in breeding together the mongrels." However, he continues, as soon as you remove the conditions which produced the new variety,—as when you permit pigeons to mate promiscuously,—no matter how different the varieties may have been, you will have, in a few generations of pigeons, the same blue rock pigeon with the black bars across the wings. No new species has originated. All varieties, in a free state, revert to type. "This," says Huxley, "is certainly a very remarkable circumstance."
Fairhurst points out the difficulties in which the evolutionist becomes involved through the fixity of species. He writes: "It is well known that as a rule distinct species will not cross, and that if they do cross the offspring are not fertile. On the other hand, it is true that all varieties of a species readily cross, producing fertile offspring. This has commonly been regarded as a well-defined distinction between varieties and species. If the varieties of pigeons which are so different from each other did not freely cross, and if the mongrel offspring were not fertile, Darwin's argument as to the production of new species under domestication would be complete. The fact is, we do not know of the origin of any two species of animals that do not cross and whose offspring are not fertile; in other words, we do not know of the origin of species, but only of varieties. The origin of species that will not cross and produce fertile offspring is assumed from the origin of varieties that do cross and produce fertile offspring. This leaves the evolutionists to account for one of the most difficult things in connection with this theory, namely, how did varieties of animals of the same species become cross-sterile?* [*So that they were unable to interbreed. Only if such cross-sterility exists, could they exist thereafter as independent new species.—G.] Several things must occur simultaneously before cross-sterility between parent and offspring could occur and become effective, namely, a number of individuals must be born at the same time possessing the same variation, the variation must be useful, these individuals must be fertile with each other, they must be cross-sterile with the parent form," as, otherwise, the offspring would revert to type, "and, finally, the few, if any, individuals thus produced and being widely scattered through the species, must find each other before they could propagate. I regard it impossible that these things could all occur simultaneously." ("Organic Evolution," p. 333.)
Mr. Huxley is forced to this admission: "After much consideration, and with assuredly no bias against Mr. Darwin's views, it is our clear conviction that, as the evidence stands, it is not absolutely proven that a group of animals, having all the characters exhibited by species in nature, has ever been originated by selection, whether artificial or natural." And again. "Our acceptance of the Darwinian hypothesis must be provisional so long as one link in the chain of evidence is wanting; and so long as all the animals and plants certainly produced by selective breeding from a common stock are fertile with one another, that link will be wanting."
In a recent book, "Creation or Evolution? A Philosophical Inquiry," George Ticknor Curtis says: "The whole doctrine of the development of distinct species out of other species makes demands upon our credulity which the [tr. note: sic] irreconcilable with the principles of belief by which we regulate, or ought to regulate, our acceptance of new matter of belief."
CHAPTER FIVE. Rudimentary Organs.
Darwinism does not account for the fact that the various organs of animals while in process of evolution, must have through many generations, been in a rudimentary, incomplete state. Since it is a basic doctrine of evolution that useful variations were transmitted from parent to offspring because they were useful; and since furthermore, only the fully developed eye, the hearing ear, the actively functioning poison glands of insects and reptiles, etc., as well as the fully developed means of defense, were useful, it is not possible to understand how these organs in their rudimentary state (the half developed eye, not yet capable of vision; the rudimentary spinneret of the spider, not yet capable of producing a thread, etc.) could serve any purpose which would make their transmission advantageous to the species.
Conversely, the existence of rudimentary organs in living species (the rudimentary spurs of female birds, the rudimentary legs of skeleton of serpents) proves that organs do not change by use or disuse, otherwise they would long ago have disappeared.