C *78 3 
X. Experiments and Observations on the different Modes in which 
Death is produced by certain vegetable Poisons. By B. C. Brodie, 
Esq F. R. S. Communicated by the Society for promoting the 
Knowledge of Animal Chemistry. 
Read February 21, 1811. 
I. 1 he following experiments were instituted with a view 
to ascertain, in what manner certain substances act on the 
animal system, so as to occasion death, independently of me- 
chanical injury. I was led to the inquiry, from the subject of 
it appearing to be of considerable interest and importance, and 
from a hope, that, in the present improved state of physiolo- 
gical knowledge, we might be enabled to arrive at some more 
satisfactory conclusions, than had been deduced from any 
former observations. 
The substances, which act as poisons when applied to the 
animal body are very numerous. In the experiments, which l 
have hitherto made, I have employed vegetable poisons only. 
Of these I have selected such, as are very active and certain 
in producing their effects, believing that, on this account, the 
exact nature of those effects would be more readily ascer- 
tained. The principal objects, which I have kept in view have 
been to determine, on which of the vital organs the poison 
employed exercises its primary influence, and through what 
medium that organ becomes affected. I have also endeavoured 
