INDEX 



529 



Rhone, river, bacteria in, 91, 92 



Rivers, bacterial contents of, 89- 

 102 



Rockner-Rothe's process for puri- 

 fying water, 192 



Bosettaceus, M., 503 



' Bother ' Bacillus, 441 



Roux's method of cultivating bac- 

 teria on potatoes, 22 



Bubefaciens, B., 441 



Euber, B. (Bacille rouge de Kiel), 

 442 



action of light on, 352, 353 



Bubescens, B., 438 



Bubidus, B., 440 



Bub rum, Spirillum, 406 



Rufum, Spirillum, 409 



Buc/ula, Spirillum, 407 



Sand nitration, 117-154 



experimental, 154-159, 169, 



170 



bacterial effect of thickness of, 

 126, 144 



bacteria in, taken from Berlin 

 filter-bed at different depths, 

 158 



bacteria in, taken from different 

 depths of experimental filtering 

 tank, 166 



- silver, filtration by means of, 

 169, 170 



- green, filtration by means of, 

 169, 170 



white, agitation of water with, 

 200 



Saone, river, bacteria in, 91, 92 

 Saprogenes II., B., 432 

 Sapropliiles a, Vibrio, 404 



y, Vibrio, 404 

 Sea-water, bacteria in, 112 



descriptions of bacilli obtained 

 from, 451-457 



Sedimentation, effect of, on bac- 

 teria in water, 95-98, 112, 184 

 193 



' Seidengldnzender Bacillus ' (Tata- 

 roff ),. 489 



Seine, river, bacteria in, 91, 220 

 multiplication of, 226 



Seltzer-water, vitality of bacteria 

 in, 236-242 



Septicaemia, symptoms of, induced 

 by impure water, 257, 258 



Septicaemia, bacillus of rabbit, dis- 

 covery of, in water, 258 



- mouse, discovery of, in 

 water, 258 



Serpens, Spirillum, 409 



Sewage, purification of by Rockner- 

 Rothe's process, 192 



experiments on, in Massachu- 

 setts, 159-167, 205-216 



purification of, by sand filtration, 

 159-167 



- irrigation, 167-169 



strength of, in America, 161 



bacterial contents of, 89, 101, 

 163, 168, 205-209 



Silica jelly, 17 



Slime and retention of bacteria in 



sand filters, 155-159 

 Snow, bacterial contents of, 84, 85 

 Soda crystals, addition to gelatine 



peptone of, 67 

 Sodium carbonate added to gelatine 



peptone, 63-67 



chloride, insolation of anthrax 

 in presence of, 383 



sulphate, insolation of anthrax 

 in presence of, 383 



Softening of water by Clark's pro- 

 cess, 185 



Gaillet and Huet's pro- 

 cess, 191 



Southwark and Vauxhall Com- 

 pany's filter-beds, bacterial ex- 

 amination of, 135, 136 



Spectrum, action of different rays 

 of, on bacteria, 334, 339, 353, 354, 

 356-360 



Spirillar forms, detection in water 

 of, 276, 279, 280, 283 



found in water, 399-409 



behaviour of, in presence of 

 albuminoids, 280 



Spirillum cholerae asiaticae (see 



Cholera bacillus) 

 , Spores, staining of, 52-54 



resistance of, to high tempera- 

 tures, 2 



Spree, river, bacteria in, 92-95, 143 

 Springs, mineral, bacteria in, 108, 



109 

 Spring-water, bacteria in, 107, 108 



multiplication of, 224 

 Staining of micro-organisms, 42-59 



nuclei of tissue, 49 

 flagella, 54-58 



M M 



