;8 
GUIDE TO THE 
another detail connected with their hides by which the 
two species can be distinguished ; R. sondaic 7 is has a 
saddle-shaped fold over the nape of the neck, whereas 
this fold in R. unicornis is continuous with the shoulder 
fold behind. 
Rhinoceros unicornis is now chiefly confined to the 
dense jungles that occur along the base of the Himalaya, 
or at least to the country north of the Ganges, and to 
the valley of Assam. It is known, however, to have had 
formerly a much more extended distribution, as it has 
been found in the Rajmahal hills and near the sacred 
mountain of the Jains, Parisnath. But, in earlier times, 
about the middle of the 16th century, rhinoceroses, 
probably this species, frequented the banks of the Indus 
where they are said to have been hunted by the Emperor 
Babar. 
In Africa, there appear to be four, if not five, species of 
Rhinoceros, and all of these have two horns and smooth 
skins, and the adults do not possess incisor teeth, but 
these teeth are present in the adults of the four Asiatic 
species, two with single horns, and two with double horns. 
The horns of Rhinoceroses are quite different in struc¬ 
ture from the horns of Ruminants. The horn is merely 
a growth from the skin, consisting of a mass of aggluti¬ 
nated horny fibres, so that, if the horn be knocked off, it 
leaves a clean surface, and if injured, it apparently has 
the power of renewal. It is highly prized by the Chinese, 
who carve it into ornaments of various kinds, and it is 
also considered valuable as a medicine. 
The north side of the Rhinoceros enclosure is separated 
by a narrow lane from a series of paddocks devoted to 
the exhibition of the Rati tee, or Struthious Birds, represent- 
