xlvi LIST OF FIGURES. 



FIG. PAGB 



83. Diagram illustrating the influence of food on the secretion of the 



pancreatic juice 366 



84. Diagram to illustrate the nerves of the alimentary canal in the dog . 384 



85. Apparatus for taking tracings of the movements of the column of air 



in respiration 429 



' 86. Tracing of thoracic respiratory movements 432 



87. Diagram of Lud wig's mercurial gas-pump 444 



88. Diagram of Alvergniat's pump 446 



89. The spectra of oxy-haemoglobin in different grades of concentration, 



of (reduced) hseinoglobin, and of carbonic-oxide-hsemoglobin . 452 



90. Spectra of some derivatives of haemoglobin . . . . . . 459 



91. Curve of the effect on respiration of section of one vagus . . . 476 



92. Curve of the effect on respiration of section of both vagus nerves . 477 



93. Curve of the quickening of respiration by gentle stimulation of the 



central end of the vagus trunk 477 



94. Curve of respiratory increase due to stimulation of vagus nerve . 478 



95. Curve of the inhibitory effects of stimulation of the superior laryngeal 



nerve 480 



96. Curves illustrating the effects of distension and collapse of the lung . 481 



97. Curve shewing the effects of repeated inflations of the lungs . . 482 



98. Curve shewing the effects of repeated suctions of the lungs . . 482 



99. Curves of blood-pressure and intra-thoracic pressure taken together . 498 



100. Curves of blood-pressure during a suspension of breathing . . 505 



101. Curve shewing Traube-Hering undulations . . ... . . 508 



102. Renal oncometer 526 



103. Oncograph 527 



104. Tracing from renal oncometer 528 



105. Section of the liver of frog 564 



106. Three phases of the hepatic cells of the frog 565 



107. Section of mammalian liver rich in glycogen 568 



108. Section of mammalian liver containing little or no glycogen . . 568 



109. Normal spleen curve from dog 580 



110. A transverse dorso-ventral section of the spinal cord (human) at the 



level of the sixth thoracic nerve 682 



111. Transverse dorso-ventral section of the spinal cord (human) at the 



level of the sixth cervical nerve 683 



112. Transverse dorso-ventral section of the spinal cord (human) at the 



level of the third lumbar nerve 685 



113. Diagram to illustrate the general arrangement of the several tracts of 



white matter in the spinal cord 686-687 



114. Diagram illustrating some of the features of the 1 spinal cord at differ- 



ent levels 688 



115. Diagram shewing the united sectional areas of the spinal nerves pro- 



ceeding from below upwards 690 



116. Diagram shewing the variations in the sectional area of the grey 



matter of the spinal cord, along its length 691 



117. Diagram shewing the relative sectional areas of the spinal nerves as 



they join the spinal cord 691 



118. Diagram shewing the variations in the sectional area of the lateral 



columns of the spinal cord, along its length 694 



