FIG. 
185. 
186. 
187. 
188. 
189. 
190. 
191. 
192. 
193. 
194. 
195. 
196. 
197. 
198. 
LIST OF ILLUSTRATIONS. 
Spirillum Metschnikovi, . ; j 5 A m . 
Penicillum glaucum, : 
Miquel’s aéroscope, . ; é 4 : qi 
Hesse’s aéroscope, . ‘ ; x . i . 
Miquel’s flask, . : é . é . . 
Straus and Wiirtz’s soluble tiger: 5 - - 
Petri's sand filter, . . ; F . 
Sugar filter, . : . . . 
Sedgwick and Tucker’s spring: : 
Sternberg’s vacuum tube, 
Lepsius’ apparatus for collecting water at various depths, 
Koch’s plate method, é 
Smear preparation from liver of wallow: fear daduvrer, < 
Bacillus cadaveris grandis, 
