GENERAL INDEX. 



Absorption spectra, 236 et seq. 



Aerosomes, 162. 



Albuminous substances, decomposition 



of, 20. 

 Arabia, 6. 

 Assimilation of hydrogen sulphide, 



46-47. 

 Autolysis, 94-98. 



Bacterial plate, 58. 

 Bacteriochlorin, 232, 233. 

 Bacterioerythrin, 233. 

 Bacteriopurpurin, 232, 233, 235. 



— a, 235. 



- i3, 235. 



Black sand of Clyde estuary, 25-29. 

 Bud formation, stages in, 157-159. 

 Budding, 157. 



Carbon, the source of, 40-60. 

 Cell division, 69, 74, 77. 



— inclusions, 192. 



— intimate structure of the, 75, 77, 



176-192. 



— nucleus, 186. 



— size, 71, 77. 



— wall, 183. 

 Ceylon, 6. 



Cilia insertion, 73, 77, 159. 

 Ciliary movement, mechanics of, 

 216-220. 



— — of the sulphur bacteria, 210. 

 " Clamp connections," 145. 

 Classification of the sulphur bacteria, 



67-91. 



— — — attributes used in, 



6978. 



— Buchanan's, 69, 85-8S. 



Ellis', 88-91. 



— — ■ — Engler's, 68. 



■ Jensen's, 83-85. 



Meyer's, 68. 



Migula's, 68. 



— — — Molisch's, 81-83. 



• Winogradsky's, 78-81 



— principles of a natural, 67. 



Classifications, review of previous, 



78-8S. 

 Colonial habit, 228. 

 Colour, 75, 77, 229. 

 Colouring matter of T. voliitaus, 237 



ct seq. 

 Conidium, 107. 

 Copenhagen, 5. 

 Culture methods, Jegunow's, 58. 



Keil's, 55. 



• Molisch's, 55. 



Skene's, 59. 



Winogradsky's, 53-55. 



— of the sulphur bacteria, 53-63. 

 Cysteine, 7, 20, 32. 



Cystine, 7, 20. 

 Cytoplasm, 179, 192. 



Denitrifying sulphur bacteria, the, 

 48. 



— thiosulphate bacteria, 3. 

 Denmark, 6. 



Egypt, 6. 



Endospores, 98-99, 102, 159. 



Fermentation, 36. 



Ferment snlf-Jiydriqtie, 24. 



Ferrous sulphide, formation of, 27, 59. 



Fission, 98, 112, 119, 156. 



Food requirements of the sulphur 



bacteria, 3-1-36. 

 Fountain plate, 59. 

 France, 6. 



Geographical distribution of the 



sulphur bacteria, 4-7. 

 Germany, 6. 

 Glutathione, 20, 32. 

 Great Britain, 6. 

 Growth, 94. 



— relationship of light to, 203. 



Habif, diversity of, 76, 78. 

 Holland, 6. 



259 



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