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 pneumoniae, 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

Eisner's gelatine, 204
method of isolating coli: typhoid group, 438

Endogenous spores, 138
varieties of, 139

Endo-germination, 139

English proof agar, Blaxall, 193

Enumerating colonies on plates, 423
discs, Jeffer's, 424
Pakes', 424

Enrichment method in water analysis, 427

Enumeration of micro-organisms, 423

Environmental conditions, 142

Enzyme production, investigation of, 277

Eosin, 93

Equatorial germination, 140

Erlenmeyer flask, 4

Ernstschen Koerner, 136

Esmarch's roll culture, 226
water collecting bottle, 417

Estimation of reaction of media, 280

Ether flame, 28
soluble acids, 284

Eucaine, 345

Exalti