Our knowledge of this animal has hitherto been extremely limited, both with regard to its natural history, and also its internal structure. A paper by James Parsons, M. D. giving a very accurate description of a young rhinoceros, was read before the Royal Society, in June, 1743; but, as the Doctor does not attempt to describe more of it than the external figure and coverings, (which are delineated,) we may presume that he never had any opportunity of examining the internal parts : his account, however, as far as it goes, is in every respect correct ; I shall not, therefore, take up the time of this learned Society by a useless recapitulation, but proceed to describe such appearances as have not yet been noticed. The subject of the following observations was brought from the East Indies to England, where it was intended he should remain, until a favourable opportunity should offer of sending him to Vienna. During the passage from India, he appeared to enjoy a good slate of health, which continued uninterrupted, until a few days before his death ; at which time, he was attacked with difficulty of breathing, and died before he had attained his third year. In the course of this time, he had become perfectly docile and tame ; but never, by actions or otherwise, expressed the smallest regard or affection for his keeper, or for any of the people who occasionally fed him ; neither was he easily irritated, but preserved, on all occasions, the most perfect indifference and stupidity. He was fed chiefly upon hay and oats, also potatoes, and other fresh vegetables ; his consumption of which was prodigious, exceeding that of two or three working horses. It would appear, that this animal had not arrived to near its full growth : he was scarcely so high as a two year old heifer ; but the bulk of his body, by measurement, considerably exceeded the length. The horn, which is affixed to the upper lip of the adult rhinoceros, was here just beginning to sprout. The hoofs were divided into three obtuse parts: the soles of the feet were well defended, by a large mass of elastic matter, covered by a strong horn-like substance.