PLATE VII. 



FIG. 1. Blood of guinea-pig dead of symptomatic anthrax. 

 Blood-corpuscles, and between them several bacilli. X 700. (From 

 The Practitioner, London, June, 1884, p. 426. Klein.) 



FIG. 2. Blood of guinea-pig dead of Koch's malignant oedema. 

 1. red blood discs ; 2. white corpuscles ; 3. single bacilli ; 4. chain 

 of long bacilli ; 5. leptothrix. X 700. (From The Practitioner, 

 London, June, 1884, p. 424. Klein.) 



FIG. 3. Spirochcete Obc.rmeieri. X 700. (From a photo-micro- 

 graph by Koch.) 



FIG. 4. Bacilli from the pericardial serum of a corpse, ob- 

 tained three days after death, in summer. X 700. (From a photo- 

 micrograph by Koch.) 



