DESCRIPTION OF PLATE I. 



FIG. 



I. Cocci singly and varying in size. 



2. Cocci in chains or rosaries (streptococcus). 



3. Cocci in a mass or swarm (zoogloea). 



4. Cocci in pairs (diplococcus). 



5. Cocci encapsuled (Bacterium pneumonia crouposce). 



6. Cocci in groups of four (merismopedia). 



7. Cocci in packets (sarcina). 



8. Bacterium termo. 



Q. Bacterium tenno x 4000 (after Dallinger and Drysdale). 

 I o. Bacterium lineola . 

 II. Bacillus subtilis. 

 12. Bacillus tuberculosis. 

 13. Bacillus Icpra. 

 14. Bacillus malaria (after Klebs). 

 15. Bacillus typhosus (after Eberth). 

 16. Spirillum undula (after Cohn). 

 17. Spirillum volulans (after Cohn). 



18. Spirillum cholera Asiatics : from an artificial cultivation. 

 19. Spirillum Obermeieri (after Koch). 

 20. Spirochcete plicatilis (after Fliigge). 

 21. Vibrio rngula (after Prazmowski). 

 22. Cladothrix F&rsteri (after Cohn). 

 23. Cladothrix dichotoma (after Cohn). 

 24. Monas Okenii (after Cohn). 

 25. Monas Warmingii (after Cohn). 

 26. Rhabdomonas rosea (after Cohn). 



27. From a cover-glass-preparation of blood from the spleen of a mouse 

 which had died of anthrax ; stained with fuchsine (Zeiss T V o.i. Oc. 4). 

 28. From a drop-cultivation of Bacillus anthracis (Zeiss ^ o.i. Oc. 4). 

 29. From a cover-glass impression-preparation of a potato-cultivation of 



Bacillus anthracis (Zeiss ^ o.i. Oc. 4). 

 30. From a preparation of Bacillus anthracis^ cultivated in nutrient gelatine 



(torula-form). 

 31. Involution-form of Crenothrix (after Zopf). 



