286 Agriculture and Chemistry. 
T. gorilla. T. niger. 
3 —_—__—_——__ 
Length, : : 2°38 2°8 2:0 
Length of Crown, 5 1:33 «1-3 0°10} 
Breadth of Base, ; 1:0 0-10 0-7 
Thickness of do., ; 0-72. 0°73 0°53 
The following note from Dr G. A. Perkins to the author, 
dated Salem, October 15, 1849, confirms the statements made 
by Dr Savage, in his description of the habits of the Engé- 
ena, as to its ferocity, and the fact of its attacking human 
beings. 
« The two crania were received from a person on board a 
vessel trading in the Gaboon and Danger Rivers, W. Africa. 
They were obtained from the natives on the banks of the lat- 
ter, by whom they had been preserved as trophies. From 
the gentleman who gave them to me, I learned that the kill- 
ing of one of these animals was by no means a common 
occurrence. He describes the animal as being remarkably 
ferocious, even attacking the natives when found alone in the 
forests, and in one instance which fell under his observation, 
horribly mutilating a man who was out in the woods felling 
trees to burn. His shouts brought to his aid several other 
natives, who, after a severe contest, succeeded in killing the 
Engé-ena. The man was afterwards in the habit of exhibit- 
ing himself to foreigners who visited the river, and of receiv- 
ing charity from them.”—(American Journal of Science and 
Arts, Vol. ix., No. 25, p. 34, Jan. 1850.) 
Agriculture and Chemistry. 
[The following observations on the bearing of Chemistry 
on Agriculture, although in opposition to prevalent opinions 
on the subject, yet, being from the highest British authority. 
cannot fail to interest agriculturists and chemists. } ; 
No one should be taught to undervalue the services which 
the sciences may render to agriculture and all the arts. In 
the history of the arts there are two periods, in one of which 
results only are regarded, and common experience depended 
