THE STRUCTURE OF BACTERIA. 



1. 



3. 





Fig. 2. The Structure ot Bacteria (after Alfred Fischer). 

 Appearances obtained by plasmolysis. 

 1-3 enlarged I : 1500. 



1. The comma bacilli of Finkler and Prior, plasmolyzed with 

 5 p. c. NaCl solution, showing contraction of the cell contents 

 the nucleus according to Butschli into a and b, and finally the 

 breaking up into c, two polar granules. 



2. Leptothrix buccahs after treatment with 10 p. c. nitric acid ; 

 the membrane is more translucent than the contracted and dis- 

 integrated cell contents. 



3. Clostridium butyricum treated with 5 p. c. NaCl solution. 



