Fish River Bush, South Africa. 201 



vity the same, which in the maniplus, however, is quite dry, 

 preparatory to the chymification effected in the true stomach. 

 The food in the fourth cavity is similar, but more liquefied 

 than in the first two cavities. The caecum is large, contains no 

 formed faeces, and the small intestine enters into it at right 

 angles to its axis by a small constricted opening, situated 

 about three inches from the cul-de-sac extremity. The colon 

 is much narrower than the caecum, and at its commencement 

 performs two complete circular folds in a separate plane of 

 peritoneum, before becoming a movable free viscus in the 

 abdominal cavity. The spleen is not larger than a crown- 

 piece, flat, and lies against the left surface of the stomach. 

 The pancreas is also small and flat in shape. The smallness 

 of the former organ is probably commensurate with the large 

 circulation of the intestinal tube, affording sufficient amount 

 of portal blood for the liver, and with this circulation being 

 in these animals in a state of almost constant activity, and 

 thus affording a constant supply ; while the periodical state 

 of these matters in the carnivora may afford greater ground 

 for a larger supplementary organ to receive an unrequired 

 influx on the stomach and intestines, and sustain a steady sup- 

 ply of materials for the liver to elaborate into bile for an en- 

 suing period. 



The Dui-Ru (Cephalophus) , so called from its bounding 

 mode of progression, is a species of antelope, and rather nu- 

 merous in the Fish River Bush, where it inhabits the darker- 

 coloured ground covered with clumpy patches of bush. Both 

 its spoor and dung are peculiar from the others, and its ha- 

 bitats consequently become known by these means. It has 

 beautiful shining dun-coloured hair, short erect horns, with 

 three or four annulations at the base, and is marked by a 

 black stripe on the forehead and nose, and an S- shaped streak 

 beneath each eye, indicating the situation of the orifice of the 

 lachrymal sinus. It has a short tail, white underneath. Its 

 speed is very great ; in fact swifter than any other kind 

 of the smaller bucks of the colony, which is attained by its 

 numerous bounds, each clearing about 30 feet of level ground. 

 As an object of mere sport, it has very great chances in its 

 favour for escape. Its skin forms good carosses, and its 



