PLATE 68. 

 Varia. 



I. Bacterium tussis convulsivae L. and N. From 

 mucus, coughed up by a child with whooping-cough. X 

 1000. Ordinary fuchsin stain. 



II. Bact. ulceris cancrosi (Kruse) L. and N. Sec- 

 tion of an untreated soft ulcer of twelve days' duration. 

 Stained according to Unna. (Copied from Peterson, iiber 

 Bacillenfund bei Ulcus molle, C. B. xm, Tafel 4.) 



III. Streptococcus meningitidis cerebrospinalis 

 (Weichselbaum). Lehm. and Neum. Smear preparation 

 from meningeal exudate. Pus cells with flattened diplo- 

 cocci. (Copied after Jager, Zeitschrift fiir Hygiene, lid. 19, 

 Tafel vi, Fig. 3.) X 1000. 



IV. Streptococcus meningitidis cerebrospinalis. 

 Pure culture, grown from cerebrospinal fluid. X 1000. 



V. Bacterium influenzae (R. Pfeiffer) Lehm. and 

 Neum. Smear preparation from nasal secretion. X 1000. 

 Stained with fuchsin. 



Bacillus gangraenae pulpae. Arkovy. 



VI. Gelatin stab culture, ten days at 22°. The little 

 hairs along the stab canal often become much longer. 



VII. Agar plate, three days at 37°. Natural size. Su- 

 perficial colonies. 



VIII. Potato culture, ten days at 22°. The wrinkling of 

 the surface suggests the culture of the mesentericus. 



IX. Microscopic preparation. X 1000. Stained with 

 fuchsin. Before spore-formation. 



