LIST OF PLATES. 



PLATE OPPOSITE PAGE 



I. The Cilia of B. termo and S. voluntatis. (Drysdale 



and Dallinger) 40 



II. Different Modes of Grouping of the Bacteria ... 47 



III. Saccharomycetes and Schizomyce'tes 58 



IV. Disease Ferments of Wort and Beer. (Pasteur) . . 84 



V. Different Forms of Bacteria. (Cohn) 95 



VI. Different Forms of Bacteria. (From Photo-micro- 

 graphs by Dr. Sternberg) 98 



VII. Dissemination of the Bacteria. (From PhotOTinicro- 



graphs by Dr. Sternberg) 100 



VIII. Reproduction of Bacillus Ulna, by Spores. (Photo- 

 micrographs by Dr. Sternberg) 127 



IX. Formation of Spores in Bacillus, &c. (Koch) . . . 153 



X. Spirillum Obermineri and Bacillus Anthracis. (Koch). 268 



