VI PREFACE. 



and the arrangement under Compound Radicals, introduced by 

 M. Liebig. 



It was now obvious that the science was sufficiently 

 advanced to be applied to the elucidation of the great ques- 

 tions of vegetable and animal physiology. A condensed view 

 is given of the new discoveries in the former department, and 

 also of the important conclusions respecting the animal functions 

 of respiration and digestion, results which are entirely new, and 

 now enter for the first time in^ a systematic work on 

 Chemistry. 



University College, 

 November, 1841. 



v* 



if 



i 



