xiv ILLUSTRATIONS 



FIG. PAGE 



31. Dirt Tests 141 



32. Bacteria on Hairs 142 



33. A Dirty Stable 143 



34. A Clean Stable 144 



35. Sanitary Milk Pails 145 



36. Typhoid Fever Spread by Milk . 160 



37. Typhoid Fever Spread by Water 161 



38. Protection of a Well 162 



39. A Home-Made Pasteurizer 182 



40. Ropy Milk 192 



41. Gassy Cheese 211 



42. Anthrax 257 



43. Tubercular Omentuin 274 



44. A Tubercular Spleen 275 



45. Buying Tuberculosis 277 



46. Tuberculosis Spread by Creamery By-products . . . 278 



47. A Tubercular Animal 280 



48. A Tubercular Animal 281 



49. Injecting Tuberculin . 283 



50. Reaction Curves in the Tuberculin Test 285 



51. Avian Tuberculosis 291 



52. Avian Tuberculosis 292 



53. Texas Fever 298 



54. Foot-and-Mouth Disease 307 



55. Foot-and-Mouth Disease 308 



56. Foot-and-Mouth Disease 309 



57. Actinomycosis 318 



58. Glanders 321 



59. Glanders 322 



60. Hog Cholera .330 



61. Hog Cholera 331 



62. Roup 



63. Pear Blight 347 



