

LECTURE IV. 



ON ANIMAL AND VEGETABLE POISONS. 



(Concluded.) 



HAVING submitted to you at our last meeting, 

 such observations as I had to offer upon those 

 poisons which produce their effects by being in- 

 troduced into the blood vessels from the bites or 

 stings of venomous animals, we are next led to 

 treat upon those substances which act upon the 

 system through the medium of the stomach ; of 

 which I have selected poisonous fish and vege- 

 table poisons, for this day's consideration. But 

 as previously it may be useful to possess some 

 general knowledge of the organs upon which the 

 deleterious articles, about to be described, pro- 

 duce their first effect, I shall, in terms, as concise 

 and as familiar as the nature of the subject will 

 admit, endeavour to explain to you their structure 

 and uses. 



It will be necessary to premise, that there is 

 one grand intestinal canal, through the agency 

 of which, the food is conveyed, digested, and 

 converted into chyle or nutriment for the supply 



