page 128. For crosses of tailless fowls see Bechstein 'Naturges. Deutsch.' b.
3 s. 403. Bronn 'Geschichte der Natur' b. 2 s. 170 gives analogous facts with
horses. On the hairless condition of crossed South American dogs see Rengger
'Saugethiere von Paraguay' s. 152; but I saw in the Zoological Gardens
mongrels, from a similar cross, which were hairless, quite hairy, or hairy in
patches, that is, piebald with hair. For crosses of Dorking and other fowls
see 'Poultry Chronicle' volume 2 page 355. About the crossed pigs, extract of
letter from Sir R. Heron to Mr. Yarrell. For other cases see P. Lucas
'L'Hered. Nat.' tome 1 page 212.) From cases like these, in which the colours
of the two parents are transmitted quite separately to the offspring, we have
all sorts of gradations, leading to complete fusion. I will give an instance:
a gentleman with a fair complexion, light hair but dark eyes, married a lady
with dark hair and complexion: their three children have very light hair, but
on careful search about a dozen black hairs were found scattered in the midst
of the light hair on the heads of all three.

When turnspit dogs and ancon sheep, both of which have dwarfed limbs, are
crossed with common breeds, the offspring are not intermediate in structure,
but take after either parent. When tailless or hornless animals are crossed
with perfect animals, it frequently, but by no means invariably, happens that
the offspring are either furnished with these organs in a perfect state, or
are quite destitute of them. According to Rengger, the hairless condition of
the Paraguay dog is either perfectly or not at all transmitted to its mongrel
offspring; but I have seen one partial exception in a dog of this parentage
which had part of its skin hairy, and part naked, the parts being distinctly
separated as in a piebald animal. When Dorking fowls with five toes are
crossed with other breeds, the chickens often have five toes on one foot and
four on the other. Some crossed pigs raised by Sir R. Heron between the solid-
hoofed and common pig had not all four feet in an intermediate condition, but
two feet were furnished with properly divided, and two with united hoofs.