remarked (3/9. 'Die Racen des Schweines' s. 47, 64.), display in an eminent
degree the characters of a highly-cultivated race, and hence, no doubt,
their high value in the improvement of our European breeds. Nathusius makes
a remarkable statement ('Schweineschadel' s. 138), that the infusion of the
1/32nd, or even of the 1/64th, part of the blood of S. indicus into a breed
of S. scrofa, is sufficient plainly to modify the skull of the latter
species. This singular fact may perhaps be accounted for by several of the
chief distinctive characters of S. indicus, such as the shortness of the
lachrymal bones, etc., being common to several species of the genus; for in
crosses characters which are common to many species apparently tend to be
prepotent over those appertaining to only a few species.

(FIGURE 2. HEAD OF JAPAN OR MASKED PIG. (Copied from Mr. Bartlett's paper
in 'Proc. Zoolog. Soc.' 1861 page 263.))

The Japan pig (S. pliciceps of Gray), which was formerly exhibited in the
Zoological Gardens, has an extraordinary appearance from its short head,
broad forehead and nose, great fleshy ears, and deeply furrowed skin.
Figure 2 is copied from that given by Mr. Bartlett. (3/10. 'Proc. Zoolog.
Soc.' 1861 page 263.) Not only is the face furrowed, but thick folds of
skin, which are harder than the other parts, almost like the plates on the
Indian rhinoceros, hang about the shoulders and rump. It is coloured black,
with white feet, and breeds true. That it has long been domesticated there
can be little doubt; and this might have been inferred even from the fact
that its young are not longitudinally striped; for this is a character
common to all the species included within the genus Sus and the allied
genera whilst in their natural state. (3/11. Sclater in 'Proc. Zoolog.
Soc.' February 26, 1861.) Dr. Gray (3/12. 'Proc. Zoolog. Soc.' 1862 page
13. The skull has since been described much more fully by Professor Lucae
in a very interesting essay, 'Der Schadel des Maskenschweines' 1870. He