Rashes, serum, 289 urticarial, 292 Rate of division, 43, 91 of movement, 45 Rats, 227, 241 RAYER, 28, 35 Reaction of medium, 81, 174, 175, 216 Reactions, biochemical, 87 immunity, 255, 269, 279, 292, 293 surface, 91 REAUMUR, 33 Receptors, 257, 258, 259, 261-280 as factors in immunity, 295 of first order, 262 free, 259, 261, 262 of second order, 265 tabulation of, 294 of third order, 273 Recurrent fever, 29, 35 Red corpuscles, 249, 278, 279 REDI, 19 Reducing actions, 112, 113 enzymes, 125 Refrigeration as antiseptic, 148 REINKE, 80 Relapses, 235 Relationships of bacteria, 37-40 biological, 255, 270 Rennet, 124 RENUCCI, 27, 34 Reproduction, 37, 63, 90 Resistance to disease, 241, 250 of spores, 50 Respiratory function, 88 tract, 246 Retarders, 143 Rheumatism, 245 _Rhizobium leguminosarum_, 65, 68, 69, 118 Rhizoid colonies, 222, 223 RHIZOPUS NIGRICANS, 226 RHODOBACTERIACEÆ, 63 _Rhodococcus_, 66, 69 RICHET, 289 Ricin, 262 RIDEAL, 165 Rideal-Walker method, 165 RIMPAU, 281 RINDFLEISCH, 29, 35 Ringworm, 28 Ripening of cheese, 32 of cream, 97 ROBIN, 262 Rock, phosphate, 115 Rocky Mountain spotted fever, 242 ROGERS, 265 Röntgen rays, 79 Room temperature, 213 Rooms, disinfection of, 167 incubator, 213 Root tubercle bacteria, 86, 87, 108 tubercles, 117 ROSENAU, 289 Rot, potato, 28, 34 Round worm, 232 Roup, 244 ROUX, 30 Rubbing as inoculation, 195 Rust, grain, 26, 34 RUZICKA, 42 S SACCATE liquefaction, 222 Safranin, 205 Saliva, 248 Salivary glands, 248 Sake, 100 Salt-rising bread, 95 Saprogenic, 102 Saprophilic, 103 Saprophyte, 87, 238 _Sarcina_, 57, 58, 60, 66, 68, 69 _lutea_, 77 _ventriculi_, 83 _Sarcoptes scabiei_, 27, 34 Sauerkraut, 98 Scarlet fever, 246, 248, 250 Scavengers, bacteria as, 108 SCHICK, 289 _Schistosomum hematobium_, 28, 35 SCHLÖSING, 32, 35 SCHÖNLEIN, 27, 34 SCHROEDER and DUSCH, 21 SCHULTZE, 21, 34 SCHWANN, 21, 31, 34 Sea, bacteria in, 71, 111 Sealing air-tight, 20 Secondary infection, 234 Sections, staining of, 209 Selective media, 198, 199 Self-limited, 233 SEMMELWEISS, 28, 35 Sensitization, 290 Sensitized animal, 290 bacteria, 254 vaccine, 254 Septicemias, hemorrhagic, 246 Sero-bacterins, 254 Serum, antidiphtheritic, 263 antitetanic, 263 heated, 271, 277, 279 rashes, 289 sickness, 289, 292 simultaneous method, 253 therapy, 253 Serums, cytolytic, failure of, 275 Sewage disposal, 101, 116 sulphate, reduction in, 114 Shape of spore, 48 Sickness, serum, 289, 292 Side-chain theory, 256, 258 Silkworm disease, 27, 29, 34, 35 Size of bacteria, 37, 40 Skatol, 104