ADDITIONAL NOTES. 145 



tions of sensibility when touched. This was 

 followed by a tremulous motion of the limbs, 

 and soon afterwards by complete recovery. 



NOTEH. (Page 91.) 



The researches of modern toxicologists, and 

 the application of a more exact chemistry to the 

 detecting of poisons, not only in the alimentary 

 canal, but in the different tissues, and even in the 

 blood itself, afford a sufficient contradiction of 

 the observation, that where death has been pro- 

 duced by arsenic "but little is to be learned 

 from the examination of the contents of the 

 stomach." The fact is, that, in pursuing these 

 investigations, the object which I had imme- 

 diately in view was to determine the operation 

 of poisons on the various vital organs, and the 

 mode in which they occasion death ; and that 

 my attention was only incidentally directed to a 

 subject, which, notwithstanding its great prac- 

 tical importance, is not that which is of the great- 

 est interest to the physiologist. 



The world is deeply indebted to those whose 

 successive labours have brought the art of tracing 

 the existence of these mysterious agents after 

 they have done their work of death, to the state 

 of comparative perfection which it has now 

 attained, and especially to M. Orfila, with whom 



