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X. On the Brain of the Sumatran Rhinoceros (Ceratorhinus sumatrensis). By 
A. H. Garrop, W.A., F.R.S., Prosector to the Society. 
(Received June 19th, 1877.) 
[Piate LXX.] 
IN 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 therefore 
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 having removed the brain in the earlier specimen, I took the oppor- 
tunity of doing so in the second, and on the present occasion place before the Society 
the drawings of the brain from different aspects (Plate 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 represented in its 
different aspects, and in its internal detail, by Professor Owen, in the ‘ Transactions’ of 
this Society, volume iv. pls. 19-22, and is described shortly on page 58 et seg. of the 
same yolume. 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 sumatrensis, although the greater size 
of the former species would have favoured an opposite conclusion. 
So complicated and numerous are the convolutions that the general type-plan of their 
disposition is to a considerable extent disguised. They very closely resemble the same 
VOL. X.—PART IX. No. 1.—August 1st, 1878. 3K 
