XVIU ILLUSTRATIONS. 



TIO. 



PAGE 



33. Esmarch's Roll-tube ^9 



34. Mouse-holder 9^ 



35. Appatarus for the Subcutaneous Insertion of Solid Substances 93 



36. McCrae's Method for making Collodion Capsules 95 



37. Cover-glass Preparation of Blood 9^ 



38. Sternberg Bulb 99 



39. Micrococci of Various Forms i°7 



40. Bacilli of Various Forms i°° 



41 . Spirilla of Various Forms 1°^ 



42. Involution Forms -■ i°9 



43. Bacteria with Capsules : m 



44. Bacteria with Spores 112 



45. Bacteria Showing Flagella 113 



46. Fermentation-tube 120 



47. Sedgwick-Tucker Aerobioscope 123 



48. Receptors of the First Order Uniting with Toxin 184 



49. Receptors of the Second Order and of some Substance Uniting with 



One of Them 185 



50. Receptors of the Third Order and of some Substance Uniting with 



One of Them 187 



51. "Spectrum " of Theoretically Fresh Crude Toxin 188 



52. "Spectrum" of Very Fresh Crude Toxin 189 



53. "Spectrum " of Crude Toxin as it is Supposed Always Practically to 



Occur 1 189 



54. Bacillus subtilis 224 



55. Spirilla from Swamp Water 227 



56. Spirilla from Swamp Water with Flagella 228 



57- Yeast Cells 230 



58. Penicillium glaucum, Oidium lactis, Aspergillus glaucus, Mucor 



mucedo 231 



59. Staphylococcus pyogenes aureus in Pus 240 



60. " " " PureCulture 241 



61. " " " Culture in Gelatin 243 



62. Streptococcus pyogenes, Pure Culture 245 



63. " " in Pus 246 



64. " " Culture on Agar 247 



65. Micrococcus tetragenus in Pus 248 



66. " lanceolatus (of Pneumonia) in Sputum 250 



67. " lanceolatus (of Pneumonia) showing Capsules 251 



68. Diplococcus intiacellularis meningitidis 255 



6g. Gonococcus in Pus 256 



70. Bacillus pyocyaneuf 261 



71. Bacillus of Bubonic Plague 263 



