xx LIST OF ILLUSTRATIONS. 



FIG. PAGE. 



129. Tetanus bacilli, some of which possess spores, x 1000 .... 379 



130. Bipolar spore formation in glucose agar culture of B. tetani. X 1000 . 379 



131. Stab-culture of the tetanus bacillus (Kitasato) 381 



132. Film preparation in a case of malignant oedema in human subject. X 1000 394 



133. Bacillus of malignant oedema. X 1000 395 



134. Stab-cultures in agar 396 



135. Bacillus of quarter-evil, showing spores, x 1000 401 



136. Bacillus aerogenes capsulatus 403 



137. B. aerogenes capsulatus, showing coagulation of casein .... 405 



138. Cholera spirilla, x 1000 409 



139. Cholera spirilla stained to show the terminal flagella. x 1000 . . 409 



140. Cholera spirilla from an old agar culture, x 1000 ..... 409 



141. Puncture culture of the cholera spirillum 411 



142. Colonies of the cholera spirillum in a gelatin plate 412 



143. Metchnikoff s spirillum, x 1000 427 



144. Puncture cultures in peptone gelatin 428 



145. Finkler and Prior's spirillum from an agar culture, x 1000 . . . 429 



146. Influenza bacilli from a culture on blood agar. x 1000 .... 430 



147. Film preparation from a plague bubo, showing enormous numbers of 



bacilli. X 1000 436 



148. Bacillus of plague from a young culture on agar. x 1000 . . . 436 



149. Bacillus of plague in chains. X 1000 437 



150. Culture of the bacillus of plague on 4 per cent salt agar. x 1000 . . 437 



151. Section of a human lymphatic gland in plague, x 50 . . . . 439 



152. Film preparation of spleen of rat after inoculation with the bacillus of 



plague, x 1000 441 



153. Spirilla of relapsing fever in human blood. X about 1000 . . . 448 



154. Micrococcus melitensis, from a two days' culture on agar at 37 C. X 1000 453 



155. Bacillus .icteroides, from a young culture on agar (Sanarelli). X looo . 456 



156. Culture of Bacillus icteroides on agar. Natural size . . . . 457 



157-162. Various phases of the benign tertian parasite 518 



163-168. Exemplifying phases of the malignant parasite 519 



169. Amoebae of dysentery . 530 



170. Section of wall of liver abscess, showing an amoeba of spherical form with 



vacuolated protoplasm, x 1000 532 



