226 



INDEX. 



N. 



Nageli, classification of, 57. 

 Nitrification, role of bacteria in, 



149. 

 Nitrogen, how obtained by the 



bacteria, 112. 

 Nutrition of the bacteria, 111. 



0. 



Ophidomonas sanguinea, 80. 

 Origin of the bacteria, 101. 

 Oxygen, role of, 115. 

 Ozone, action of^ upon the bac- 

 teria, 121. 



Palmella prodigiosa, 73. 



Pathogenes, 75. 



Petalobacteria, 46. 



Petalococcos, 46. 



Pigmentary bacteria, 72. 



Place of the bacteria in vegetable 

 series, 55. 



Polymorphism, 133. 



Position of the bacteria, 48. 



Protoplasm, currents in, 37. 

 granules in, 37. 

 of the bacteria, 36. 



Pseudobacteria, 50. 



Pulverulent precipitate, consist- 

 ing of bacteria, 46. 



Pus, bacteria in, 111, 177. 



Putrefaction, r61e of bacteria in, 

 148. 



R. 



Ray-Lankester, researches of, 

 relating to bacterio-purpurine, 

 38. 



Relapsing fever, bacteria in, 173. 



Respiration of the bacteria, 111. 

 Reproduction of the bacteria, 123. 



by fission, 123. 



by spores, 126. 

 Rhabdomonas rosea, 80. 

 Rugeola, bacteria in blood of, 169. 



S. 

 Saccharomycetes, 57. 

 Sachs, classification of, 57. 

 Sarcina, 96. 

 Scarlatina, bacteria in blood of, 



169. 

 Schizomycetes, 57. 

 Schizophytes (Cohn), 66. 

 Septicemia, role of bacteria in, 



152. 

 Species, physiological of Pasteur, 

 63. 

 value of, 61. 

 Spherobacteria, 71. 

 Spirobacteria, 91. 

 Spiromonas Cohnii, 80. 

 Spirillum, 94. 

 S. attenuatum, 96. 

 S. Rosenbergii, 96. 

 S. rufum, 94. 

 S. tenue, 94. 

 S. undula, 94. 

 S. violaceum, 96. 

 S. volutans, 94. 

 Spirochete, 93. 

 S. gigantea, 93. 

 S. Obermeieri, 93. 

 S. plicatilis, 93. 

 Sporangia, 130. 

 Spores, development of, 128. 

 germination of, 131. 

 Starch, in Bacillus amylobacter, 



39. 

 Streptobacteria, 44. 

 Streptococcos, 44. 

 Streptothrix, 97. 

 S. Foersteri, 97. 



