CONTENTS. xiii 



The Structure of Arteries^ Veins and Capillaries. 



PAGE 



105. On some features of connective tissue. Gelatiniferous nbrillae. 



Connective-tissue corpuscles 189 



106. Elastic fibres 191 



107. The structure of capillaries; epithelioid cells. The size of capillaries 



and variations in their calibre 192 



108. The structure of minute arteries 195 



109. The structure of larger arteries 196 



110. The structure of the veins 198 



111. Some points in the structure of the heart 199 



112. The main features of the vascular apparatus 200 



SECTION II. 

 THE MAIN FACTS OF THE CIRCULATION. 



113. Behaviour of arteries contrasted with that of veins .... 203 



114. Blood pressure in an artery and in a vein 204 



115. Methods of registering blood pressure ; mercurial manometer. Ky- 

 mograph. The blood pressure curve 206 



116. Characters of the blood pressure in various arteries and veins. 

 Blood pressure in the capillaries. Fall of blood pressure in the 



minute vessels 209 



117. The circulation through the capillaries, and small vessels. Peripheral 



resistance 211 



Hydraulic Principles of the Circulation. 



118. The three main physical facts of the circulation ; the central pump, 



the peripheral resistance and the elastic tubing . . . 213 



119. The conversion of the intermittent into a continuous flow by means 



of the elastic reaction of the arteries 214 



120. Artificial Model. Arterial and venous pressure with great and with 



little peripheral resistance 216 



121. Additional aids to the circulation in the living body . . . 221 



Circumstances determining the Rate of the Flow. 



122. Methods of determining the rate of the flow. Hasmadromometer, 

 Eheometer, Haematachometer. The plethysmographic method. 



The rate of flow in arteries, veins and capillaries . . . 222 



123. The rate of flow dependent on the width of the bed .... 226 



124. The time of the entire circuit 228 



125. Summary of the main physical facts of the circulation . . . 229 



