INDEX. 105 



XI. Of the relations to Physiology to several other Sciences, 54, 



The relation of physiology to physics', chemistry, and mechanics, 54. 

 Connexion of physiology with human and comparative anatomy, 56. Its 

 connexion with medicine, 59. 



XII. Classification of the Vital Functions, 60. 



The best divisions of the vital functions is that which was first pointed 

 out by Aristotle, adopted by Buffon, and completely developed by Gri- 

 inaud, 60. Modifications of which this division is susceptible ; preser- 

 vative functions of the individual or of the species, 61. These two great 

 divisions further divided into two orders, 61. Why man is subject to 

 more diseases than animals, 63, 64. 



Of the arrangement of this work, 66. The voice is a natural connex- 

 ion between the preservative functions of the individual and those of the 

 species, 67. The history of the ages and temperaments, and of the 

 varieties of the human species 5 the account of death and putrefaction 

 forms a separate appendix, 67. 



FIRST CLASS. 



Functions subservient to the preservation of the Individual, 

 ORDER FIRST. 



Functions of Assimilation. 

 CHAPTER I. 

 On Digestion, 71. 



Definition of this function, 71. General considerations on the digestive 

 apparatus, 72. Connexion between the nature of the aliment and the ex- 

 tent of the digestive tube, 72. Of aliments, 73. The nutrient principle ob- 

 tained from the aliment, by our organs, is always the same, 73. Of the 

 nature of the alimentary principle, 74. Differences of Regimen, ac- 

 cording to the climate, 75. Hunger and thirst, 76. Mastication, 79. 

 Action of the lips, of the cheeks, of the tongue, of the teeth, of the jaws, 

 78, 79, 80. The salivary solution, 81, 82. Deglutition, its mechanism, 

 83, 84. Deglutition of fluids and of gaseous substances, 85. Of the ab- 

 domen, 86. Of digestion in the stomach, 87. Different systems of di- 

 gestion ; of concoction, fermentation, 88. Of putrefaction, 89. Of tri- 

 turation; of digestion in granivorous fowls, 90. Of maceration, 91. 

 Phenomena of rumination, 91. Of the gastric juice, 92, Its source, its 



O 



