400 Miscellaneous. 



Notice of a new Species of Bosh-BucJc (Cephalophus tricolor) from 

 Natal. By Dr. J. E. Gray, F.R.S. &c. 



Mr. W. Fosbrook has kindly presented to the British Museum a 

 beautiful small species of Bush-Bock, which was captured by John 

 Dunn, Esq., in the Umgozy Forest, between the river Umbelaus and 

 Umblatore, in the country of the Amazula. The natives have no 

 name for it, as far as Mr. Dunn could learn. It is a most peculiarly 

 marked species, and of very small size ; when it died, the mammae 

 were found dilated with milk, showing that it was of adult age. The 

 hunters mistook it for a young animal, and fed it with milk, on which 

 it died. 



Cephalophus bicolor. 



Brown ; the rump, the whole of the hind legs, the chin, throat, 

 chest, belly, inner side of the fore legs, abroad ring over the front hoofs, 

 and a large spot occupying the front of the face and forehead pure 

 white. The ears blackish, white within. The sides of the forehead 

 darkish brown. The crumen on the side of the face linear, well 

 marked. Horns none in the female sex. 



Hah. Natal. 



The smallest species of the genus, not weighing more than 3 lbs. 

 It is most like C. Whitfieldii, of the Gambia ; but the brown is of a 

 different shade, and there is no white, which is so prominent in the 

 Natal animal. 



On the Natural and Artificial Production of Cork in the Cork-oak. 

 By M. Casimir de Candolle. 



This paper is interesting as being the first botanical publication of 

 the inheritor of this honoured name in the third generation of bota- 

 nists, and as an account of the formation and structure of cork in 

 the Cork- oak, both in the natural state and especially under the 

 operation which has to be practised in order to the production of 

 cork of any commercial value. The operation consists in the re- 

 moval from the trunk of the natural corky layer of the bark down 

 to the subjacent cellular envelope or green layer, which is done in 

 Algeria (where young DeCandolle's observations were made) during 

 the summer or autumn. Shortly after this operation, a new corky 

 stratum begins to form in the green layer, at a variable distance 

 from its denuded surface. This grows by annual layers upon its 

 internal face, just as the original and worthless corky layer did ; but 

 this is much finer and much more elastic, and is the commercial 

 article. When this valuable cork has attained sufficient thickness 

 (ordinarily after seven or eight years), it also is removed, with the 

 same result as before ; i. e. still another new corky stratum is formed 

 below ; and so successive crops may be taken off the trunk every 

 seventh or eighth year for a long while, or even indefinitely. — Ab- 

 stract in Silliman's Journal for Sept. 18(52 from the Mem. de la Soc. 

 de Phys. et d'Hist. Nat, de Geneve, vol. xvi. 18C0. 



