LIST OF ILLUSTRATIONS xi 



FIG. PAGE 



59. PHOTOGRAPHIC SPECTRUM OF OXYH^EMOGLOBIN AND METH.EMO- 



GLOBIN Gamgee 190 



60. CENTRIFUGAL MACHINE 195 



61. ABSORPTION SPECTRA OF MYOH^MATIN 199 



62. A DESICCATOR Gscheidlen 199 



63. ABSORPTION SPECTRA OF URINARY PIGMENTS . . . After Hopkins 215 



64. GOWERS' ILEMACYTOMETER 217 



65. OLIVER'S HJEMACYTOMETER 218 



66. GOWERS' H^MOGLOBINOMETER 219 



67. VON FL-EISCHL'S H^MOMETER 220 



68. OLIVER'S H.EMOGLOBINOMETER 221 



69. MODEL TO ILLUSTRATE POLARISED LIGHT 223 



70. MODEL TO ILLUSTRATE POLARISED LIGHT 223 



71. MODEL TO ILLUSTRATE POLARISED LIGHT ...... 224 



72. DIAGRAM TO EXPLAIN POLARISATION OF LIGHT 225 



73.. DIAGRAM TO EXPLAIN POLARISATION OF LIGHT 226 



74. SOLEIL'S SACCHARIMETER 227 



75. DIAGRAM OF OPTICAL ARRANGEMENTS IN SOLEIL'S SACCHAEIMETER . 227 



76. LAURENT'S POLARIMETER 228 



77. SPECTRO-POLARIMETER OF VON FLEISCHL 229 



78. DIAGRAM OF ASYMMETRIC CARBON ATOMS 231 



79. DIAGRAM OF PFLUGER'S PUMP 232 



80. L. HILL'S AIR-PUMP 233 



81. WALLER'S APPARATUS FOR GAS ANALYSIS .... Waller 234 



82. KJELDAHL'S METHOD, DISTILLING APPARATUS 235 



83. DIAGRAM TO ILLUSTRATE OSMOSIS ..... , 239 



