TOXINS AND VENOMS. 



PART I. 



GENERALITIES REGARDING TOXINS AND 

 ANTITOXINS. 



CHAPTER I. 



ALKA.LOIDAL TOXINS. PTOMAINES AND 

 LEUCOMAINES. 



Alkaloidal Products of Cellular Life. 



Before entering upon the study of the true 

 toxins, which are products of an alkaloidal nature 

 and of unknown composition, it is necessary to 

 say a few words regarding the most definite of 

 the toxic alkaloidal principles that are frequently 

 encountered under various conditions, conjointly 

 with the true toxins, particularly in venoms, and 

 which, furthermore, are closely allied to these albu- 

 minoid toxins. 



