xxvi LJ ST OF ILLUSTRATIONS 



FIG. 



. . 



40. Schema of Atwater-Benedict respiration calorimeter (courtesy of Prof. Francis 



G. Benedict) ...... ... 86 



41. Respiration apparatus of Pettenkoffer and Voit (drawn for this edition) . . 87 



42. Respiration apparatus of Sonden and Tigerstedt ...... 88 



43. Three experiments on elimination of urea by fasting dogs ..... 101 



44. Elimination of N in urine of man .... ...... 102 



45. Preparations from the liver (normal and diabetic) of man . . . . . 126 



46. Blood crystals ....... ........ 150 



47. Absorption spectrum of oxyha3moglobin ........ . 151 



48. Absorption spectrum of haemoglobin . . . . . . . .151 



49. Hsemin crystals ............... 153 



50. Schema of the circulation ....... . 162 



51. Cross section through a fully contracted human heart ...... 163 



52. "Krehl's cone" of fibers in the left ventricle . . . . . . . . 163 



53. Casts of ventricular cavities of ox heart in rigor mortis ...... 164 



54. Position of atrio-ventricular valves when closed ........ 166 



55. Cardiographic sound ............. 168 



56. Intracardial pressure curves of horse .......... 169 



57. Pressure curves of right ventricle, left ventricle, and aorta of horse . . . 170 



58. Pressure curves from left ventricle and aorta of horse ..... .171 



59. Schema illustrating Ludwig's theory of the apex beat ...... 172 



60. Pressure curves in right auricle, right ventricle, and of apex beat (horse) . .173 



61. Receiving tambour of Marey's cardiograph ......... 174 



62. Curves of apex beat and carotid pulse of man ........ 175 



63. Variations of electrical potential in human heart ....... 179 



64. Action current of human heart ........... 180 



65. Direct stimulation of isolated cat's heart ......... 183 



66. Influence of temperature on isolated heart of the cat ...... 184 



67. Cardiac nerves of dog . . ........... 191 



68. Representation of pulse rate . . .......... 192 



69. Depressor nerve of rabbit . . .......... 193 



70. Behavior of blood pressure on stimulation of depressor nerve .... 194 

 71. Pulse rate in man at different ages .......... 197 



72. Flow of liquid through rigid tube of uniform diameter ...... 198 



73. Flow of liquid through rigid tube of varying diameter ...... 199 



74. Artificial schema of mechanics of circulation (courtesy of Prof. W. T. Porter) . 200 



75. Cubic enlargement of aorta of rabbit, increasing internal pressure . . . .201 



76. Erlanger's apparatus for determination of blood pressure in man (courtesy of 



Prof. Joseph Erlanger) ............ 203 



77. Blood pressure curve, feeble stimulation of vagus ....... 205 



78. Blood pressure curve, medium stimulation of vagus ....... 206 



79. Blood pressure curve, strong stimulation of vagus ....... 207 



80. Current clock .... ....... .... 209 



81. Haemadomograph with air-transmission ......... 209 



82. Velocity and pressure curves in carotid of horse ....... 210 



83. Plethysmograph .............. 211 



84. Plethysmographic curvo ....... ' ...... 212 



85. Schema illustrating Weber's theory of pulse ........ 213 



86. Spring of Marey's sphygmograph ........... 214 



87. Marey's sphygmograph as used . . ......... 215 



88. Radial pulse curve ...... .216 



89. Contractile cells embracing wall of capillary ........ 220 



