The Making of Species 
the other exclusively, but always exhibit some 
blending of the characters of both, which is, 
after all, what might have been expected, since 
well-defined species usually differ in more than 
one character. 
Thus, the cross between the Amherst and gold 
pheasants chiefly resembles the latter, but has 
the ruff white as in the Amherst, while the crest, 
though in form it resembles that of the gold 
species, is not yellow as in that species, nor red 
as in the Amherst, but of an intermediate tint, 
brilliant orange. 
The mule between the horse and ass, as all 
know, combines the shapes of the two parents, 
though in colour it follows the horse rather than 
the ass. 
When two remote species, one or each of 
which possesses some distinctive structural 
peculiarity, are crossed, the hybrid does not 
inherit such points. The guinea-fowl has a 
helmet, and a pair of wattles on the upper 
jaw ; the common fowl a comb, and a pair of 
wattles on the lower jaw; but in the hybrid no 
comb, helmet, or wattles are present. 
The Muscovy drake has a bare red eye-patch, 
and the male of the common duck curled middle- 
tail feathers; in the hybrid neither of these 
peculiarities is reproduced. 
In a cross between nearly-related forms, the 
peculiarity of one species may be reproduced in 
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