xxii LIST OF ILLUSTRATIONS IN TEXT 



FIG. PAQE 



100. Stab culture of the anthrax bacillus in peptone-gelatin . 337 



101. Anthrax bacilli containing spores. x 1000 . . . 339 



102. Scraping from spleen of guinea-pig dead of anthrax. x 1000 342 



103. Portion of kidney of a guinea-pig dead of anthrax. x 300 . 343 



104. Bacillus coli communis. x 1000 .... 354 



105. A large clump of typhoid bacilli in a spleen. x 500 . . 359 



106. Typhoid bacilli, from a young culture on agar, showing some 



filamentous forms. x 1000 .... 360 



107. Typhoid bacilli, from a young culture on agar, showing 



flagella. x 1000 . . . . . -361 



108. Culture of the typhoid bacillus and of the bacillus coli . 362 



109. Colonies of the typhoid bacillus on a gelatin plate. x 15 . 363 



110. Film preparation from diphtheria membrane, showing 



numerous diphtheria bacilli. x 1000 . . . 400 



111. Section through a diphtheritic membrane in trachea, show- 



ing diphtheria bacilli. x 1000 . . . .401 



112. Cultures of the diphtheria bacillus on an agar plate . . 403 



113. Diphtheria colonies, two days old, on agar. x 8' . . 403 



114. Diphtheria bacilli, from a twenty-four hours' culture on agar. 



X1000 . . . . . . .404 



115. Diphtheria bacilli, from a three days' agar culture. x 1000 . 404 



116. Involution forms of the diphtheria bacillus. x 1000 . . 405 



117. Pseudo-diphtheria bacillus (Hofmann's). x 1000 . . 415. 



118. Xerosis bacillus from a young agar culture. x 1000 . . 416 



119. Film preparation of discharge from wound in a case of 



.tetanus, showing several tetanus bacilli of "drumstick" 

 form. xlOOO . . . . . .421 



120. Tetanus bacilli, showing flagella. x 1000 . . .422 



121. Spiral composed of numerous twisted flagella of the tetanus 



bacillus. X1000 . . . . . .423 



122. Tetanus bacilli, some of which possess spores. x 1000 . 423 



123. Stab culture of the tetanus bacillus in glucose gelatin . . 424 



124. Colonies of the tetanus bacillus on agar, seven days old. x 50 425 



125. Film taken from margin of spreading gas gangrene, showing 



b. welchii. x 1000 . . . . .443 



126. Film from necrosed muscle in gas gangrene. , x 1000 . 443 



127. Film from a pure culture of b. welchii. x 1000 . . 444 



128. Bacillus welchii, showing capsules. x 1000 . . .445 



129. Film preparation from the affected tissues in a case of 



malignant cedema. x 1000 .... 449 



130. Bacillus of malignant oedema, showing spores. x 1000 . 450 



131. Stab cultures in agar — tetanus bacillus, bacillus of malignant 



cedema, and bacillus of quarter-evil .... 451 



132. B. sporogenes, pure culture, showing sub-terminal spores. 



xlOOO . . . . . . . 455! 



