CONTENTS. 



Pagej 



Origin of hippuric acid . . .48 

 Formation of the chief secretions and 



excretions 48 



Soda essential to the bile . . .49 

 Relation of urine to bile . . .50 

 Relation of starch to biJe . . .51 

 Uses of common salt . . . . 52 

 Certain remedies take a share in the 



vital transformations . .54 

 Chief qualities of the blood . . . 54 

 Modus operandi of organic remedies . 55 

 All organic poisons contain nitrogen . 56 

 Theine identical with caffeine . . 56 

 Relation of theine and caffeine to bile . 56 

 Theory of their action . . . .57 

 Theory of the action of the vegetable 



alkalies 57 



Composition and origin of nervous 



matter . . . ' V 57 

 It is related to that of the vegetable al- 

 kalies 58 



Theory of the action of the latter . , 59 



Page 



Phosphorus seems essential to nervous 



matter ...... 59 



1 



PART III. 



1. The phenomena of motion in the 

 animal organism . . . .60 



2. The same subject, with particular 

 reference to the waste and supply or 

 change of matter . . . .69 



3. Theory of disease . . . .74 



4. Theory of respiration . . .77 



APPENDIX. 



Containing the analytical evidence re- 

 ferred to in the sections in which are 

 described the chemical processes of 

 respiration, nutrition, and the meta- 

 morphosis of tissues . .80 



On the conversion of benzoic acid into 

 hippuric acid in the human body, by 

 W. Keller . 101 



INDEX 



. 103 



