528 



MICRO-ORGANISMS IN A\'ATEK 



Paisley water supply, 150, 151 

 Pararosaniline colours and G-ram's 



method, 49, 50 

 Parietti's method for detection of 



typhoid baciUus, 272 

 Pasteur, culture solution, 26 

 Pathogenic bacteria, detection of, 



in water, 257—285 

 vitality in water of, 286-332 



— — insolation and virulence of, 

 385-887 



list of, found in water, 898 



Peroxide of hydrogen, action of, on 

 bacteria in water, 244-247 



generation of, during inso- 

 lation, 389—390 



Petri culture-dish, 34 



Apparatus for counting colo- 

 nies on, 34 



Phenol broth and detection of 

 typhoid baciHus, 272-276 



Phosphor escens indicuSj B., 451 



— indigenus, B., 452 



— gelidus, B., 451 

 Photobacteriographs, 360-362 

 Photobacterium luminosum (see 



Argenteo phosphorescens lique- 

 faciens) 



Photographic record of plate- 

 cultures, 80-82 



Picrocarmine solution, 49 



Pigments, bacterial, action of light 

 on, 347, 351 



Pipettes, cleaning and sterilisation 

 of, 79 



Plicatile, Spi/rillutn, 409 



Plicatus, B,, 459 



Plujnosus, M.f 494 



Pneumoniae, B., vitality in water 

 of, 325 



Potato cultures, 20-24 



— gelatine, 22 



— acidity and alkalinity of, 23 



— growth of cholera bacillus on, 

 23 



glanders bacillus on, 24 



B., prodigiosus on, 20 



Pressure, effect of high, on bact- 

 erial contents of water-filtrates, 

 1, 48, 126-128, 148-150, 151, 154- 

 157 

 ProddgiosuSi B., 440 



— growth on potatoes of, 20 



— vitality in seltzer-water of, 240 



— behaviour in ice of, 252 



Proteus fluorescens, B., 421 

 detection of, in water, 269 



— vulgaris, B., 420 



behaviour of, in ice, 252 



— Tni/rahiliSi B., 420 



— ZenUri, B., 421 

 Pseudo-anthracis, B., action of light 



on sporulation of, 360 

 Pseudo- cholera spi/rillum, 403 

 Pumping, effect of, on bacterial 



contents of well-water, 103-105 

 Punctatus, B., 486 

 Pure cultures by means of solid 



culture media, 7-9 

 liquid culture media, 



24, 28, 29 

 Purification of water for drinking 



purposes, 117-216 

 — by agitation with solid 



particles, 193-205 



— — sewage, 159-169, 205-216 

 water by insolation, 370-384, 



392, 393 



Clark's process, 190, 



191 



Gaillet and Huet's pro- 

 cess, 191 



Rockner-Eothe's pro- 

 cess, 192 



Putrificus col% B., 486 



Pyogenes aureus, Stajjhylococcus, 

 498 



Pyocyaneus, B., 424 



— vitality in water of, 327 



— action of light on, 348, 353, 372 

 Pyrogallate of potash solution for 



anaerobic cultures, 41 



Bad/latus aquatilis, B., 459 

 Badiatus, M., 503 

 Rain, bacterial contents of, 88 

 Bamosus, B. (' Wurzel-bacillus '), 



419 

 Red pigment, bacteria producing a, 



439-442, 477, 496, 497 

 Beitenhachvi, Sarcina, 507 

 Reservoirs, storage of water in, 184- 



190 



— use in America of, 189 

 Beticula/ris, B., 435 

 Rhine, river, bacteria in, 98 



' Bhine-water ' Bacillus (Burri), 

 483 



— Micrococcus (Burri), 491 



