Cold incubator, 217 Coli-typhoid group, differential table, 433 in milk, 451 in soil, 477 isolation of, 432 members of, 430 Collection of blood for bacteriological examination, 378 for media making, 168 of milk samples, 443 of pathological material during life, 373 of pus, 373 of soil sample, 471 of water samples, 416 Collodion capsules, 357 sacs, manufacture of, 357 Colonies of bacteria, edges, 267 Coloured light, action of, 309 Columella, 127 Comparative hæmocytology, 374 Complement, definition of, 325 fixation test, 393 Concentration method in water, analysis, 434 Condenser achromatic, 54 dark ground, 60 paraboloid, 60 substage, 54 Condidium, 128 Continuous sterilisation, 36 Contrast stains, 93 Corrosive sublimate (Lang), 82 Cotton-wool filter, 40 Counterstaining films, 84 Counting plate colonies, 423 Cover-slip films, 81 to clean new, 22 used, 24 Crates for test-tubes, 31 Cream, analysis of, 457 qualitative analysis of, 458 quantitative analysis of, 457 Crenothrix morphology, 133 Criteria of infection, 370 Criterion of immunity, 324 Cultural characters, macroscopical examination, 261 Culture flask, Guy's, 5 Kolle, 4 Roux, 5 Cuneate bacilli, 139 Cutaneous inoculation, 352 Dark ground condenser, 60 illumination, 87 Daughter cells, 129 Daylight, diffuse, action of, 308 Decimal scales, 340 Decolourising agents, 84 Definition of objective, 56 Depilatory powder, 346 Description of plate culture, 261 Descriptive terms, 261 Desiccation, effects of, 306 table, 501 Desiccator, Mueller's, 307 Dextrose solution, preparation of, 178 Diaphragm, iris, 53 Diastatic enzymes, tests for, 278 Differential atmosphere cultivation, 257 incubation, 255 media, 255 staining, 108 sterilisation, 256 Diluting chamber, 248 Dilution by teat pipette, 383 of serum, 382 tables, 498 Dilutions, preparations of, 496 Diphtheria, bacillus of, in milk, 452 Diplobacilli, morphology of, 133 Diplococci, morphology of, 133 Diplococcus pneumoniæ, immunisation against, 322 Discontinuous sterilisation, 36 Discs of plaster-of-Paris, 192 Disinfectants, action of, 310 chemical, 27 testing of, 480 Dissociating fluid, Price Jones; 400 Dosage of inoculum, 316 Double nosepiece, 58 stains for spores, 106 sugar agar (Russell), 207 Drop-bottle, 73 Dry heat, 28 Dunham's solution, 177 Dyes, aniline, 83 Earthenware box for dirty slides, 70 Earthy salts agar (Lipman and Brown), 197 Edge of individual colonies, characters of, 267 Egg albumin agar, 213 broth, (Lipschuetz), 213 media (Dorset), preparation of, 174 inspissated, 212 (Lubenau), 209 (Tarchanoff and Kolesnikoff), 212 to clear nutrient media with, 166 Ehrlich's eyepiece, 55 Eikonometer, 65 Eisenberg's milk-rice medium, 189 Electric dental engine, 360 signal clock, 38 warm stage, 59 Elevation of colonies, 263