416 



INDEX 



Psychrophilic bacteria, 155 

 Ptyalin, 179 

 Pumice stone, 2 



Pump, electric vacuum or 

 pressure, 159 



mercury vacuum, 159 



water vacuum, 159 

 Purification of filter candles, 313 

 Pus, collecting, 14 



isolation of bacteria from, 148, 

 149 



staining of, 87, 92 

 Putrefactive, 153 



Quintol, 380 



R 



Rabbits, 295, 309, 322-325 



Rabies, 13 



RAHN, O., 168, 219, 246 



Rats, white, 295 



Rays, light, 209 



radium, 209 



X, 209 



Reaction, 20-22, 29, 30, 36, 112, 

 199, 206, 215 



adjustment of 21, 30, 36 



amphoteric, of casein, 24 



maximum, 206 



minimum, 206 



of water analysis media, 357 



optimum, 29, 206 

 Reactions, enzymic, 182-185 

 Reductase, methylen blue, 181, 

 184 



nitrate, 181 



nitrite, 181 



sulfur, 181 

 Reductases, 181, 184 

 Reduction, of litmus, 23, 24 



organic dyes, 181, 184 

 References, xii, 381-389 



Refraction, counteracted, 372 



index of, 69, 372 

 Refractivity of spores, 131 

 Refrigerator, use of, 28 

 Rennet, 24, 181, 193, 194 



curd, 24 

 Rennin, 181 



Resistance of microorganisms, 10, 

 27 



spores, 10 



Respiration of bacteria, 165, 177 

 DE REYPAILHADE, J., 190 

 Rhabdochromalium, 348 

 Rhizopus nigricans, 100, 102, 103, 



207 



Rhodobacteriacece, 348 

 RICHMOND, H. D., 194 

 RIDEAL, S. and RIDEAL, E. K., 



213 



Ringworm, 149 

 ROGERS, L. A.', 285 

 Root tissues, invasion by bacteria, 



291-294 



ROSENAU, M. J., 270, 278, 284 

 Rot, soft, bacterial, 291-294 

 Roux, 309 

 Roux's anaerobic tubes, 158 



biological method for anaerobes, 

 163, 164 



flask, 62, 109 



tubes for potatoes, 26 

 Rubber apparatus, sterilization of 



9 



RTJEHLE, G. L. A., 221, 222 

 Ruffer's flask, 159 

 Rules for culture media, 19 



laboratory, ix, x 



RUSSELL, H. L. and HASTINGS, 

 E. G., 205, 270, 281, 285, 287 



S 



Sac, collodion, 13 

 conjunctival, 295 



