LIST OF ILLUSTRATIONS. XXlli 



FIG. PACK 



100. Spirillum itndula, x 1500 ...... 262 



101. Leuconostoc mesenteroides . ... 263 



1 02. Leprosy Bacilli from a Section of Skin, x 1200 . . . 266 



103. Bacillus typhosus from a Potato-cultivation, x 1500 . . . 269 



104. Bacillus tuberculosis from Tubercular Sputum, stained by Ehrlich's 



method, x 2500 . ...... 272 



105 and 106. Bacillus anthracis, x 1200 ..... 282 



107. Pure Cultivation of the Bacillus anthracis in Nutrient Gelatine . 284 



108. Colonies in a Plate-cultivation, x 70 . . . . . 285 



109. Cover-glass impression-preparation, x 70 . . . 286 

 HO. Spores of Bacillus anthracis unstained, x 1500 . . . 290 



111. Spores of Bacillus anthracis, x 1200 . . . . .291 



112. From a double-stained preparation of Bacillus anthracis, x 1200 . 291 



113. Bacillus Mallei, x 1200 ...... 292 



1 14 and 1 15. Pure Cultivations of the Bacillus of Septicaemia of Mice . 298 



1 16. From a preparation of Bronchial Mucus of a Pig (after Klein) . 299 



117. Blood of Fresh Spleen of a Mouse, after inoculation with Swine 



Fever (after Klein) ....... 300 



118. Bacilli from an Artificial Culture with Spores (after Klein) . . 300 



119. Bacillus cyanogenus, x 650 (after Neelsen) .... 305 



120. Bacillus megaterium (after De Bary) ..... 310 



121. Pure Cultivation of Bacillus figurans in Nutrient Agar-agar . 311 



122. Bacillus saprogcnes, No. I (after Rosenbach) . . . 314 



123. Vibrio rugula, x 1020 (after Prazmowski) . . . . 317 



124. Clostridium butyricum (after Prazmowski) . . . 319 



125. Crenothrix Kiihniana (after Zopf) . . . . . 323 



126. Beggiatoa alba (after Zopf) ...... 325 



127. Several Phase-forms of Beggiatoa Roseopersicina (after Warming) . 326 



128. Cladothrix dichotoma (after Zopf) . . . . . 331 



1 29. Parasites in the Blood of Rats (after Lewis) . . . . 35 1 



130. Hcematomonas cobitis (after Mitrophanow) . . . -353 



131. Organisms in the Blood of the Carp (after Mitrophanow) . . 354 



132. " Surra " Parasites occurring singly and fused, x 1200 . . 356 



133. A Monad in Rat's Blood, x 3000 . . . . . 357 

 134 and 135. Monads in Rat's Blood, x 1200 .... 358 



136. Hesse's Apparatus ....... 363 



137. Apparatus for estimating the number of Colonies on a Plate-culti- 



vation . . . . . . . 368 



