THE BRAIN OF THE SUMATRAN RHINOCEROS. 143 
23. ON THE BRAIN OF THE SUMATRAN RHINOCEROS Page 411. 
(CERATORHINUS SUMATRENSIS).* 
[Plate IV.] 
Ty a communication to this Society, published in its ‘‘ Proceedings” 
in 1873 (p. 92), I had the opportunity of describing the visceral 
anatomy of the Sumatran Rhinoceros (Ceratorhinus sumatrensis) from 
the first specimen received by the Society. A second individual of the . 
species, a female (as was the first), was deposited in the Gardens by 
Mr. C. Jamrach in July 1875, and was subsequently purchased. It 
unfortunately died on May 30th of this year, with symptoms of lung 
disease, a post-mortem examination demonstrating that both lungs 
were uniformly and throughout implicated. My friend Dr. James F. 
Goodhart, of Guy’s Hospital, late Pathological Registrar at the College 
of Surgeons, has kindly examined these organs, and reports to me 
that they “show a very extensive catarrhal pneumonia, degenerating 
in the centres of most of the patches. There is, in addition, some 
peribronchial inflammation, evidenced by a large growth of nuclei in 
the submucous and deeper tissues of the bronchi. The disease there- 
fore precisely corresponds with the caseous pneumonia to which man 
is subject.” 
The specimen is the one referred to by Mr. Sclater in his valuable 
and superbly illustrated memoir in the Society’s “‘ Transactions,” vol. ix. 
p- 651 (foot-note %). 
Feeling how important it is to obtain all possible information with 
reference to the species, and not haying removed the brain in the 
earlier specimen, I took the opportunity of doing so in the second, and 
on the present occasion place before the Society the drawings of the 
brain from different aspects (Plate 4, [LX X]), for verification of which 
I would refer the reader to the Museum of the College of Surgeons, 
_ where the original will be found preserved and mounted. 
The brain of the Indian Rhinoceros (Rhinoceros unicornis) is repre- 
sented in its different aspects, and in its internal detail, by Professor 
. Owen, in the “ Transactions” of this Society, vol. iy. pls. 19—22, and 
is described shortly on page 58 et seq. of the same volume. To this it 
is my desire that the figures here given should form a companion. 
By comparison it will be seen at a glance that the brain of 
Rhinoceros unicornis is slightly more simple than that of Ceratorhinus 
* “Transactions of the Zoological Society,” X. pp. 411-3, pl. LXX. Read, June 
19, 1877. 
