ANALYTICAL INDEX. 



PREFACE. Preliminary discourse. Physiologythe Science of Life, 

 Definition of Life, 2, 3. 



I. Of Natural Beings, 9. 



They are inorganic or organized. The former are simple or complex; 

 the latter always complex, and distinguished into vegetable and animal* 

 Reciprocal dependence of all these berhgs, 9. 



11. Of the Elements of Bodies, 9. 



The Elements of Bodies. Their number forty-four 5 but it is probable 

 that several appear to us simple, from the imperfection of our means of 

 analysis, 10. 



III. Differences between Organized and Inorganized Bodies, 1 1. 



i 



Differences between organized and inorganized bodies, 11. Homoge- 

 neousness of the latter ; complex nature of the former ; necessary co-ex- 

 istence of fluids and solids in all organized and living beings, simplicity 

 of inanimate matter : complex nature and tendency to decomposition of 

 organized bodies, 12, 13, 14. 



IV. Differences Between Vegetables and Animals, 14. 



Differences between animals and plants, 14. The great distance be- 

 tween the mineral and vegetable kingdom. A considerable approxi- 

 mation, on the contrary, between animals and plants, 15. Of all the 

 characters which mark the differences between these substances, the 

 most remarkable is the presence of an alimentary tube, which is found in 

 every animal from man down to the polypus, 15. In all animals, nutri- 

 tion is performed by two surfaces, especially by the internal ; the alimen- 

 tary canal is the most essential part of their body, 16. It retains life 

 longer than any other part Experiments disproving Haller's opinion on 

 this subject, 16. 



V. Of Life, 16. 



Consists of a number of phenomena proportioned to the complication 

 of the organization, 17, Simple in plants, in xvhich its actions are limit- 



