190 PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
Wednesday, 6th November , 1867. 
Alexander Williams Anderson, Esq., in the Chair. 
The following Communication was read : — 
On Population. By Bobert Hall Bake well, M.D. 
(Abstract.) 
In this paper the Author gave statistics and opinions in 
reference to the doctrines of Malthus, and contrasted the 
mortality and conditions .of urban with those of rural lifo. 
Tuesday , 10^ December , 1867. 
The Hon. Louis Antoine Aime de Verteull, M.D., Prosi* 
dent, in the Chair. 
The following Visitor was introduced : Dr. Ma Donough, 
ofH.M.S. “ Gannet.” 
The following Gentlemen were elected Members : Lewis 
Henry Moorsom, Esq., M.I.C.E., Queen’s Park; and Louis 
de Verteuil, Esq., South Naparima. 
NOTICES OF MEMOIES. 
On Poisonous Fishes. By M. Auguste Dumeril. 
M. Auguste Dumeril has communicated to the Annals of 
the Linnean Society of the Department of the Maine-et- 
Loiro a very exhaustive article on poisonous Fishes. In 
the “ Annals and ifagazine of Natural History,” 3 ser., 
vol. 20, p. 153, will be found a translation of M. Dumeril’s 
paper. 
M. Dumeril first considers* the causes of tho poisonous 
effects produced by the flesh of fishes. These are : (1) the 
decomposition of organic matter in, and the discharge of 
