xi CONTENTS. 



B. Properties and functions of the vessels. 



Arteries, 151. Natural form of the arteries, 153. Pulse, 155. 



Sphygmograph, 156. Kymographion, 156. Contraction 



of the arteries, 158. 

 Capillaries, 159. Inert layer, 159. Distinction between the 



different kinds of capillaries, 160. Their structure, 161. 

 Veins, 163. Plexus, 163. Valves, 164. Vascular sounds, 



164. 



III. INFLUENCE OF THE NERVOUS SYSTEM ON THE CIRCULATION 165 



Heart, 165. Moderating nerves of the heart, 166. Acceler- 

 ating nerves of the heart, 167. Cardiac ganglia, 169. 

 Vessels, vaso-motor nerves, 170. Vascular tonus, 172. 

 Vascular peristaltism, 173. Vaso-motor centres, 176. 

 Course of the vaso-motor nerves, 176. Pathological appli- 

 cations, 178. 



IV. GENERAL USES OF THE CIRCULATION 179 



Coagulation of blood in the living vessels, 181. 



FIFTH PART. 



A GENERAL VIEW OF EPITHELIAL GLOBULES AND 

 EPITHELIAL SURFACES. 



I. GENERAL ANATOMY OF THE EPITHELIUMS 185 



Serous membranes, 185. Integumentary membranes, 186. 

 External and internal integuments, 186. Ciliated epithe- 

 lium, 187. 



II. GENERAL PHYSIOLOGY OF THE EPITHELIUMS 190 



Their function in presiding over the phenomena of meta- 

 morphoses of the tissues, 190. Their function in disease, 

 191. Lymphatic system, 194. Origin of the lymphatics, 

 195. Composition of the lymph, 197. Perivascular spaces, 

 200. Lymphatic ganglia, 205. The spleen, 20o. 



SIXTH PART. 

 DIGESTIVE SYSTEM. 



I. OBJECT OF DIGESTION, INANITION, AND ALIMENTATION . . 209 



Proximate principles, or elements of food, 210. Hydrocarbons 

 and food substitutes, 212. Liebig's extract of meat, 213. 



II. FIRST PART OF THE ACT OP DIGESTION 214 



Mastication, 214. Insalivation, 216. Ptyaline,217. Salivary 

 secretion, 218. Deglutition, 223. Concerning the reflex 

 influences of deglutition, 229. 



