XX CONTENTS OF VOL. I. 



Page. 



II. Conditions necessary for the existence of the 

 Vital Principle. . 22 



1. A Parent, Univocal Generation. Equivocal 



Generation. Theory of Evolution. Transmuta- 

 tion of Species. . 23 



2. Moisture. Whether the vital principle resides in 



the solids or fluids. . ... 29 



3. Temperature. The increase of living beings as we 

 approach the Equator. . . 30 



4. Atmospheric air. Decomposed. Carbonic acid ge- 



nerated. ....... 33 



5. Nourishment. . ib. 



III. Modifications of the Vital Principle. 



Health. Disease. Monsters, through excess or defi- 

 ciency j or by the substitution of function. Limits 

 assigned. Death, ib. 



CHAP. III. 



Distinguishing Characters of Animals and Ve- 

 getables 39 



Animals differ from Vegetables in Composition, pecu- 

 liar odour when burning; in Structure, conical 

 vessels ; in Action, Sensation, Voluntary Motion, 

 locomotion ; in Nutrition, a stomach. . 40 



CHAP. IV. 



On the Polity of Nature. 



Relative dependence of Minerals, Vegetables, and Ani- 

 mals on one another. Error of LINNAEUS, . 49 



CHAP. V. 



On the Substances which enter into the Com- 

 position of the Bodies of Animals. . . 53 



