14 LIST OF ILLUSTRATIONS 



FIG. PAGE 



38. Adrenal Gland of a Guinea-pig after FatalDiphtheric Intoxication. .Facing 115 



39. Ehrlich's Side-chain Theory. Formation of Antitoxins 152 



40. Theoretic Structure of a Molecule of Toxin and Toxoid 153 



41. Ehrlich's Side-chain Theory. Formation of Agglutinins and Precipitins... . 155 



42. Ehrlich's Side-chain Theory. Formation of Cytolysins (Bacteriolysins, 



Hemolysins, etc.) 157 



43. General Scheme of Antigens and Their Antibodies 165 



44. Phagocytosis (Macrophages) Facing 179 



45. Phagocytosis (Macrophages) Facing 179 



46. Positive Chemotaxis Facing 180 



47. Negative Chemotaxis Facing 184 



48. Capillary Pipet for Opsonic Index Determinations 199 



49. Mixing the Contents of a Capillary Pipet 200 



50. Method of Sealing a Capillary Pipet 201 



51. Method of Preparing a Blood Film 201 



52. Blood Films for Phagocytic Counts 202 



53. Tubercle Opsonic Index Facing 203 



54. An Unsatisfactory Film for Phagocytic Count Facing 203 



55. A Satisfactory Film for Phagocytic Count Facing 203 



56. An Opsonic Index Chart .207 



57. Preparation of a Bacterial Vaccine 212 



58. A Shaking Apparatus 213 



59. Capillary Pipet for Counting Bacterial Vaccines 214 



60. A Satisfactory Preparation for Counting a Bacterial Vaccine Facing 215 



61. An Unsatisfactory Preparation for Counting a Bacterial Vaccine. . . .Facing 215 



62. Instrument for the Standardization of a Platinum Loop 216 



63. Hopkins' Tube for Standardizing a Bacterial Vaccine 217 



64A. A Stock Ampule of Vaccine (Large) 218 



64B. Stock Bottle of Bacterial Vaccine 218 



65. A Small Vaccine Ampule 219 



66. Comer's Automatic Pipet 219 



67. Theoretic Formation of an Antitoxin 226 



68. Method of Administering an Intradermic Injection of Diphtheria Toxin in 



the Schick Test 229 



69. Showing the Small Anemic Area Immediately after an Intradermal Injection 230 



70. The Schick Test for Immunity in Diphtheria Facing 231 



71. A Flask of Diphtheria Culture 236 



72. A Large Toxin Filter 237 



73. Separation of Blood-serum Facing 239 



74. A Kitchens Syringe 241 



75. A Battery of Kitchens' Syringes 242 



76. A Dialysing Cylinder for the Abderhalden Ferment Test 267 



77. The Ninhydrin Reaction (Abderhalden Ferment Test) Facing 268 



78. Theoretic Formation of Agglutinins 280 



79. Theoretic Structure of Agglutinin and Agglutinoid 281 



80. Diagrammatic Illustration of the Action of Agglutinin and Agglutinoids.. . . 282 



81. A Satisfactory Culture for the Microscopic Agglutination Reaction 296 



82. An Unsatisfactory Culture for the Microscopic Agglutination Reaction 296 



83. A Positive Agglutination (Widal) Reaction in Typhoid Fever 300 



84. Microscopic Agglutination Test with Dried Blood Facing 300 



85. Macroscopic Agglutination Reaction 302 



86. Macroscopic Agglutination Test. Pro-agglutination 303 



