"The mule and the hinny have been selected and placed first, because they afford the most conclusive evidence and are the most familiar. Equally conclusive, though perhaps less striking instances, may be drawn from other sources. Thus, it has been observed that when the Ancon or Otter sheep were allowed to breed with common ewes, the cross is not a medium between the two breeds, but that the offspring retains in a great measure the short and twisted legs of the sire." Buffon made a cross between the male goat and the ewe; the resulting hybrid in all the instances, which were many, were strongly characteristic of the male parent, more particularly in the hair and length of leg. Curious enough, the number of teats in some of the cases corresponded with those of the goat. A cross between the male wolf and a bitch illustrates the same law; the offspring having a markedly wolfish aspect; skin, color, ears and tail. On the other hand, a cross between the dog and female wolf afforded animals much more dog-like in aspect--slouched ears and even pied in color. If you look at the descriptions and illustrations of these two hybrids, you will perceive at a glance that the doubt arises to the mind in the case of the first, 'what genus of _wolf_ is this?' whereas in the case of the second, 'what a curious _mongrel dog_!' The views of Mr. Walker in his work on Intermarriage, before alluded to, agree substantially with those of Mr. Orton, _so far as regards crossing between different breeds_; but they cover a broader field of observation and in some respects differ. Mr. Walker maintains that when both parents are of the _same breed_ that _either parent may transmit either half_ of the organization. That when they are of _different varieties_ or breeds (and by parity of reasoning the same should hold, strongly, when hybrids are produced by crossing different _species_) and supposing also that both parents are of equal age and vigor, that the _male_ gives the _back head and locomotive organs_ and the _female_ the _face and_ nutritive organs--I quote his language: "when both parents are of the same variety, _one parent communicates the anterior part of the head, the bony part of the face, the forms of the organs of sense_ (the external ear, under lip, lower part of the nose and eye brows being often modified) _and the whole of the internal nutritive system_, (the contents of the trunk or the thoracic and abdominal viscera, and consequently the form of the trunk itself in so far as that depends on its contents.) The resemblance to that parent is consequently found in the forehead and bony parts of the face, as the orbits, cheek bones, jaws, chin and teeth, as well as the shape of the organs of sense and the tone of the voice.