← Table of contents
The elements of bacteriological technique

INDEX

Reading edition

Abbé's condenser, 7

Abbott's stain for spores, 107

Aberration, chromatic, 56 spherical, 55

Absolute alcohol as a fixative, 82 as an antiseptic, 27

Absorbent paper for drying cover-slips, 69

A. C. E. mixture, 345

Acetic acid for clearing films, 82

Achromatic condenser, 54

Acid hæmatin, 96 production, analysis table, 283 by bacteria, 145 investigation of, 280 qualitative examination, 283, 284 quantitative examination, 280

Acid-fast bacilli in tissues, to stain, 124

Action of various gases on bacteria, 295

Active immunisation, illustrative example, 322

Adjustable water bath, 299

Aerobic cultures, 221

Aerogenic bacteria, 131

Aesculin agar, 204

Agar gelatine (guarniari), 194 methods of preparation, 167 surface plates, 232

Agar-agar, preparation of, 167

Agglutination reaction, macroscopical, 386 microscopical, 385

Agglutinin, 381

Air, analysis of, 468 filter, 40 pump, Geryk, 43

Albumin solution, Mayer's, 120

Alcohol production, test for, 285

Alkaline pyro, 239

Alum carmine, 96

Ammonia production test for, 285

Amphitrichous bacteria, 136

Anaerobic cultures, 236 Botkin's method, 243 Buchner's method, 238 Bulloch's method, 245 Hesse's method, 237 McLeod's method, 240 media, 180 Novy's method, 244

Anaerobic cultures, Roux's biological method, 237 physical method, 237 vacuum method, 238 Wright's method, 239

Anæsthetics, 345

Analysis of air, apparatus for, 469 method of, 468 qualitative bacteriological, 470 quantitative bacteriological, 468 of butter, qualitative bacteriological, 458 quantitative bacteriological, 457 of cream, qualitative bacteriological, 458 quantitative bacteriological, 457 of fish, 460 of ice cream, qualitative bacteriological, 457 of meat, apparatus for, 460 method of, 460 qualitative bacteriological, 462 of milk, apparatus for, 444 collection of samples, 441 method of, 441 qualitative bacteriological, 446. quantitative bacteriological, 444 of oysters, 463 of sewage, qualitative bacteriological, 467 quantitative bacteriological, 466 of shellfish, 463 of soil, apparatus for, 473 collection of samples, 471 method of, 470 qualitative bacteriological, 476 quantitative bacteriological, 473 of water, apparatus for, 420, 427 collection of samples, 416 method of, 416 qualitative bacteriological, 426

Analysis of water, quantitative bacteriological, 420

Aniline dyes, 83 Gentian violet, 95 water, to prepare, 108

Animal tissue media (Frugoni), 210

Animals, natural infections of, 337

Antiformin method for B. tuberculosis, 502

Antigen, definition of, 324

Antiseptics, 27 action of, 310

Apparent filth in milk, 450

Arnold's steam steriliser, 34

Arthrogenous spores, 138

Ascitic bouillon, 210 fluid agar (Wassermann), 213

Ascomycetæ, 128

Ascopores, 129

Asparagin Media (Frankel and Voges), 183 (Uschinsky), 183

Aspergillus, 127

Atmospheric conditions, 295

Attenuating the virulence of organisms, 321

Autoclave, 37 to use, 37

Automatic pipettes, 13

Autopsies, 396

Autopsy, card index for, 402

Bacilli, morphology of, 132

Bacillus anthracis in soil, 477 in water, 440 coli in water, detection of, 429 diphtheriæ in milk, 452 enteritidis in water, 437 sporogenes in milk, 452 in water, 438 œdematis maligni in soil, 477 tetani in soil, 477 in water, 441 tuberculosis in milk, 453 antiformin method, 502 typhosus in water, 441

Bacteria, anatomy of, 134 classification of, 131 grouping of, for study, 410 in tissues, demonstration of, 114 influence of environment on, 142 metabolic products of, 143 methods of identification, 259 microscopical examination of, stained, 81 unstained, 74 physiology of, 136

Bacteria, simple stains for, 90

Bacterial emulsion, preparation of, 389 enzymes, 144, 277 ferments, 144 food stuffs, 142 toxins, 144

Bacteriological analyses, general considerations, 415 examination of blood, 377

Base of microscope, 50

Basidium, 128

Beer wort, preparation of, 175

Beetroot media, 200

Beggiotoa, morphology of, 133

Benzole bath, 256

Berkefeld filter, 42

Beyrinck's solution I, 197 II, 198

Bile salt agar (MacConkey), 205 broth, double strength, 199 (MacConkey), 180

Biochemical examination of cultures, 276

Biochemistry of bacteria, 276

Biological differentiation of bacteria, 249

Bipolar germination, 140

Bismarck brown, 94

Blastomycetes, morphology of, 129

Blood agar, 171, 214 plates, animal, 251 human, 250 (Washbourn), 214 bacteriological examination of, 377 cells, washing of, 388 collection of, for serological examination, 379 films, preparations of, 376 staining of, 97 histological examination of, 373 pipettes, 11 serological examination of, 378 stains, 97

Blood-serum (Councilman and Mallory), 208 inspissated, 168 (Loeffler), 208 (Lorrain Smith), 208

Blowpipe table, 9

Body tube of microscope, 50

Bohemian flask, 4

Boiling water, 33

Bone marrow, films, preparation of, 400

Bordet-Gengou reaction, 393

Boric acid in milk, test for, 442

Botkin's anaerobic method, 243

Bouillon, preparation of, 163

Brain extract, 149

Bread paste, 193

Brilliant green agar (Conradi), 206 bile salt agar (Fawcus), 206

Brownian movement, 79

Buchner's anaerobic method, 238

Bulloch's anaerobic method, 245 tubes for permanent preparations, 407

Bunge's mordant, 104

Burri's Chinese ink stain, 77

Butter, analysis of, 457 qualitative analysis of, 458 quantitative analysis of, 457

Cadaver, preparation of, for autopsy, 397

Cages for guinea-pigs, 343 for laboratory animals, 341 for mice, 342 for rabbits, 343 for rats, 342

Calculated figure for weight of medium mass, 166, 167

Cambier's candle method of isolating coli-typhoid groups, 438

Camera lucida, 62

Capaldi-Proskauer medium, No I, 186 No II, 187

Capillary pipettes, 10 graduated, 13

Capitate bacilli, 139

Capsule formation, 134 of bacteria, 134 thermo-regulator, 218

Capsules, collodion, inoculation of, 357 preparation of, 357 glass, 6 to clean infected, 20 new, 18 to stain, 99 to sterilise, 31

Carbohydrate media, preparation of, 177

Carbolic acid as a germicide, 27, 481 method of isolating coli-typhoid group, 437

Carbolised agar, 202 bouillon, 202 gelatine, 202

Carbon dioxide in cultures, test for, 289

Card index, 336, 402

Carrot media, 200

Cedarwood oil for immersion lens, 88

Cell wall of bacteria, 134

Celloidin sacs, manufacture of, 358

Cellular incubator, 216

Centrifugal machine for blood and serum work, 327 for milk work, 447

Centrifugalised milk, 449

Centrigade degrees, conversion of, 494

Chemical products of bacteria, 145

China green agar (Werbitski), 207

Chloroform as an antiseptic, 27

Chromatic aberration, 56

Chromogenic bacteria, 131

Chromoparous bacteria, 144

Chromophorous bacteria, 144

Citrated blood agar, 191

Cladothrix, morphology, 193

Classification of bacteria, 131 of fungi, 126

Clavate bacilli, 139

Clearing films with acetic acid, 82

Clostridium, 139

Coarse adjustment, 51

Cobweb micrometer, 66

Cocaine, 345

Cocci, morphology of, 131

Coccidium infection, 339

Coefficient, inferior lethal, 312 of inhibition, 311 phenol, 489 superior lethal, 313

Cohn's solution, 191

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

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

Exalting virulence of organisms, 320

Examination of milk, 441

Experimental infections, study of, during life, 370 inoculation of animals, 332

Extracellular toxins, 144

Eyepiece, Ehrlich, 55 micrometer, 63

Eyepieces, 55

Eye-shade, 57

Fahrenheit degrees, conversion of, 495

Feeding experiments, 369

Fermentation reactions, 279 tubes, 17

Field of objective, 56

Filar micrometer, 66

Filling tubes, etc., with medium, 160

Film preparations, 81 fixing, 81 making, 81 mounting, 85 staining, 83

Filter candle, closed, 47 open, 43 testing efficiency of, 478 to disinfect, 28 to sterilise, 29 flask, 6 papers, to fold, 156

Filters, cotton-wool, 40 porcelain, 42 testing of, 478

Filtration, 40 by aspiration, 42 of media, 156 under pressure, 45

Fine adjustment, 51 spindle head, 52

Fish, analysis of, 460 bouillon, 190

Fish gelatine, 190 gelatine-agar, 190

Fishing colonies, 253

Fission, reproduction by, 136

Fixation, 81 by heat, 81 of tissues, 114

Fixing fluids, for films, 82

Flagella, classification of bacilli by, 136 to stain, 101

Flask Bohemian, 4 Erlenmeyer, 4 filter, 6 Kitasato'a serum, 6 Kolle's culture, 4

Flasks and test tubes, to plug, 24 to clean dirty, 20 new, 18 to sterilise, 31

Fleischwasser, 148

Fluid cultures, description of, 271 media, 146

Foot of microscope, 50

Formaldehyde in milk, Hehner's test for, 442

Formalin method of preserving cultures, 407 tissues, 404

Fractional sterilisation, 33

Fraenkel and Voge's solution, 183

Fraenkel's earth borer, 472

Freezing method for sections, 115

French Mannite Agar (Sabouraud), 193 proof agar (Sabouraud), 193

Fresh preparations of bacteria, 74

Friedländer's capsule stain for sections, 123

Frost's mounting fluid, 406

Frozen sections, rapid method, 116

Fuchsin, 92 agar (Braun), 205 sulphite agar (Endo), 206

Gas analysis, qualitative, 290 quantitative, 290 collecting apparatus, 291 generators, 242 production by bacteria, 289 tubes for media, 161

Gasperini's solution, 193

Gelatin agar, 193 preparation of, 164 surface plates, 231

General anæsthetics, 345

Gentian violet, 91

German lined paper, 69

Germicides, 27 testing power of, 480

Germination, 140

Geryk air-pump, 43

Glass apparatus in common use, 3 to clean, 18

Glass-cutting knife, 8

Glucose formate agar (Kitasato), 180 bouillon (Kitasato), 180 gelatine (Kitasato), 180

Glycerinated potato, 209

Glycerine agar, 209 blood-serum, 208 bouillon, 209 potato bouillon, 203 broth, 203

Goadby's gelatine, 214

Gonidium, 128

Goniodophore, 128

Graduated capillary pipettes, 13 pipettes, 6

Gram-Claudius' differential stain, 109

Gram's differential stain, 108

Gram-Weigert for sections, 121, 122

Gram-Weigert's differential stain, 109 modified, 110

Grease pencils, 72

Grouping of bacteria for study, 410

Guarded trepine, 360

Guarniari's agar gelatine, 194

Guinea-pig cages, 343 holder, 350

Gulland's solution, 82

Gum solution, preparation of, 116

Guy's culture bottle, 5

Gypsum blocks (Engel and Hansen), 192

Hæmatin, 95

Hæmatocytometer, 248

Hæmatoxilin, 95

Hæmolysin, definition of, 326 preparation of, 327 storage of, 331

Hæmolytic serum, titration of, 328

Hanging-block culture (Hill), 235

Hanging-drop cultures, 233 examination of, 86, 79 preparation of, 78 permanent staining of, 80 slides, 70

Hardening tissues, 114

Haricot agar, 200 bouillon, 200

Hay infusion, 200

Hearson's water bath, 299

Heat effect of, 299

Hehner's test, 442

Heiman's serum agar, 210

Hesse's anaerobic culture method, 237

Histological examination of blood, 373

Holder for guinea-pigs, 350

Hot air, 29 steriliser, 30 to use, 31 incubator, 217

Hot-water funnel, 158

Human blood agar plates, 250

Huyghenian eyepiece, 55

Hydrogen, generating apparatus, 242 in culture, test for, 289 peroxide in milk, test for, 442

Hyphomycetes, morphology of, 126 reproduction of, 126

Ice-box, for water samples, 419

Ice cream, analysis of, 457

Illuminant for microscope, 67

Immune body, 393

Immunisation, methods of, 321

Imperial system, 492 factors for converting, 493

Impression films, 85

Incubators, 216

Index cards, 336, 403

Indol, test for, 286

Infection, definition of, 370 general observations during life, 371 results of, 404

Influence of environment on bacterial growth, 142

Inhalation, fluid inoculum, 365 powdered inoculum, 366

Inhibition coefficient, 310, 311

Inoculation card index, 336 cutaneous, 352 intracranial, 360 intramuscular, 355 intraocular, 362 intraperitoneal, 355 intrapulmonary, 363 intravenous, 363 of collodion capsules, 357 subcutaneous, 353 syringe, 344

Inoculum, character of, 346 preparation of, 346

Inosite-free media—bouillon (Durham), 183

Inseparate toxins, 144

Intermittent sterilisation, 36

Intracellular toxins, 144

Intracerebral inoculation, 362

Intracranial inoculation, 360

Intragastric inoculation, large animals, 367 Marks method, 367

Intramuscular inoculation, 355

Intraocular inoculation, 362

Intraperitoneal inoculation, 355

Intrapulmonary inoculation, 363

Intravenous inoculation, 363

In vacuo anaerobia cultures, 289

Invertin enzymes, tests for, 279

Involution forms, 137

Iodine solution, 108

Iron bouillon, 185 peptone solution (Pakes), 185

Isolation by animal experiments, 258 by differential atmosphere, 257 incubation, 255 media, 255 sterilisation, 256 by dilution, 248 by plate cultures, 250 subcultures, preparation of, 254

Jeffer's counting disc, 424

Jenner's stain, 97

Jores' mounting fluid, 405

Kaiserling fixing solution, 405

Kanthack's serum agar, 211

Killed cultivations, 318

Kipp's hydrogen apparatus, 242

Kitasato's serum flask, 6

Klebs-Lœffler bacillus in milk, 452

Koch's steam steriliser, 34

Kohle's culture flask, 4

Lab enzymes, test for, 279

Laboratory animals, 335 comparative hæmatocytology of, 374 normal temperature, 372 regulations, 1

Lactose litmus agar (Wurtz), 203 bouillon, 203 gelatine (Wurtz), 203

Lakmus Molke, 203

Lang's solution, 82

Lead bouillon, 185 peptone solution, 186

Leishman's stain, 98 for sections, 125

Lemco broth, 163

Leptothrix, morphology, 133

Lethal dose, minimal, 316

Leviditi's staining method, 124

Light, action of, 308

Liquefiable media, 147

Liquid soap, 346

Lithium carmine, 96

Litmus bouillon, 186 gelatine, 202 milk cultures, description of, 272 preparation of, 172 nutrose agar (Drigalski-Conradi), 205 whey, 195 agar, 196 gelatine, 196 (Petruschky), 195

Local anæsthetics, 345 reaction to infection, 372

Locomotive movement, 80

Lœffler's capsule stain, 103 serum, 208

Lophotrichous bacilli, 136

Lorrain Smith electric warm stage, 59 serum, 208

Lugol's solution, to prepare, 108

Lysol, 27

MacConkey's capsule stain, 99 media, 180, 199, 205

MacCrorrie's capsule stain, 103

Macroscopical examination of cultures, 261

Malachite green agar (Lœffler), 207

Malt extract solution (Herschell), 196

Margin of individual colonies, 267

Martin's filtering apparatus, 320

Material for inoculation, 346

Mayer's albumin, 120

Mean phenol coefficient, 490

Measuring bacteria, 61

Meat, bacteriological analysis of, 460 extract preparation of, 148 reaction of, 149

Mechanical separation of bacteria, 249 stage, 52

Media, filtration of, 156 preparation of, 163 aerobic culture, 222 aesculin agar, 204 agar-agar, 167 agar gelatine (Guarniari), 194

Media, preparation of anaerobic culture, 180 animal tissue (Frugoni), 210 ascitic bouillon, 210 fluid agar (Wassermann), 213 asparagin (Fraenkel and Voge's), 183 (Uschinsky), 183 beer wort, 175 beetroot, 200 Beyrinck's solution I, 197 II, 198 bile salt agar (MacConkey), 205 broth (MacConkey), 180 double strength, 199 blood agar (Washbourn), 214 blood-serum, 168 (Councilman and Mallory), 208 (Loeffler), 208 (Lorrain Smith), 208 bouillon, 163 bread paste, 193 brilliant green agar (Conradi), 206 bile salt agar (Fawcus), 206 Capaldi-Proskauer, No. I, 186 No. II, 187 carbohydrate, 177 carbolised agar, 202 bouillon, 202 gelatine, 202 carrot, 200 China green agar (Werbitski), 207 citrated blood agar, 171 Cohn's solution, 191 dextrose solution, 178 double sugar agar (Russell), 207 earthy salt agar (Lipman and Brown), 197 egg Dorset, 174 Lubenau, 209 egg-albumen, inspissated, 212 (Tarchanoff and Kolesnikoff), 212 egg-albumin agar, 213 broth (Lipschuetz), 213 English proof agar (Blaxall), 193 fish bouillon, 190 gelatine, 190 agar, 190 fluid, 146 French mannite agar (Sabouraud), 193

Media, preparation of French proof agar (Sabouraud), 193 Fuchsin agar (Braun), 205 sulphite agar (Endo), 206 gelatine, 193 agar, 193 glucose formate agar (Kitasato), 180 bouillon (Kitasato), 180 gelatine (Kitasato), 180 glycerinated broth, 209 potato, 209 glycerine agar, 209 blood-serum, 208, 209 bouillon, 209 potato bouillon, 203 gypsum blocks (Engel and Hansen), 192 haricot agar, 200 bouillon, 200 hay infusion, 200 inosite free-bouillon (Durham), 183 iron bouillon, 185 peptone solution (Pakes), 185 lactose litmus agar (Wurtz), 203 bouillon, 203 gelatine (Wurtz), 203 lakmus molke, 203 lead bouillon, 185 peptone solution, 186 lemco broth, 163 liquefiable, 147 litmus bouillon, 186 gelatine, 202 milk, 172 nutrose agar (Drigalski-Conradi), 205 whey, 195 agar, 196 gelatine, 196 (Petruschky), 195 malachite green agar (Lœffler), 207 malt extract solution (Herschell), 196 milk, 172 rice (Eisenberg), 189 (Soyka), 189 Naegeli's solution, 191 Naehrstoff agar (Hesse and Niedner), 199 neutral litmus solution, 179 nitrate bouillon, 185 peptone solution (Pakes), 186 nutrient, 146 agar-agar, 167

Media, preparation of nutrient bouillon, 163 gelatine, 164 nutrose agar (Eyre), 172 oleic acid agar (Fleming), 201 Omeliansky's nutrient fluid, 189 Parietti's bouillon, 202 parsnip, 200 Pasteur's solution, 191 peptone rosolic acid water, 186 water (Dunham), 177 plaster-of-Paris discs, 192 potato, 174 gelatine (Elsner), 204 (Goadby), 214 proteid free broth (Uschinsky), 183 rosolic acid peptone solutions, 186 serum, bouillon, 210 dextrose water, (Hiss), 188 sugar, (Hiss), 188 water, 170 serum-agar (Heiman), 210 (Kanthack and Stevens), 211 (Libman), 212 (Wertheimer), 211 silicate jelly (Winogradsky), 198 solid, 147 special, 182 stock nutrient, 163 sugar, 177 agar, 185 (dextrose) bouillon, 184 gelatine, 184 sulphindigotate agar, 181 bouillon (Weyl), 181 gelatine (Weyl), 181 tissue (Noguchi), 214 turnip, 200 urine agar, 188 bouillon, 187 gelatine, 187 (Heller), 188 wheat bouillon (Gasperini), 193 whey agar, 195 gelatine, 195 wine must, 192 Winogradsky's solution (for nitric organisms), 198 (for nitrous organisms), 198 wood ash agar, 201 wort agar, 176 gelatine, 176

Media, preparation of yeast water (Pasteur), 191 standardisation of, 154 storage of, in bulk, 159 storing tubes of, 161 sore boxes, 162 titration of, 150 tubing of nutrient, 160

Merismopedia, morphology of, 132

Mesophilic bacteria, 143 pathogenic effects, 315

Metabolic end-products, 145

Metachromatic granules, 136

Metal instruments, to sterilise, 28

Metatrophic bacteria, 131

Methods of cultivation, 221 of identification of bacteria, 259 of inoculation, 352 of isolation, 248 of sterilisation, 26

Methylene-blue, 90

Metric system, 492 factors for converting, 493

Meyer's carmine, 96

Microbes of indication, 426

Micrococci, morphology, 132

Micrococcus, melitensis in milk, 456

Micrometer, filar, 66 net, 63 ocular, 63 stage, 62

Micrometry, methods of, 61

Micron, 61

Microscope, 49

Microscopical examination of bacteria, 86 stained, 88 unstained, 86 observations of cultures, 272

Milk, analysis of, qualitative, 446 quantitative, 444 condensed, analysis of, 444 media, 193 preparation of, 172 rice (Eisenberg), 193 (Soyka), 189 samples, collection of, 443 sedimenting tubes, 449

Minimal lethal dose, 316

Mirror for microscope, 55

Moeller's stain for spores, 107

Moist heat, 32

Molecular movement, 79

Monotrichous bacilli, 136

Motility, examination for, 79 true, 80

Moulds, examination of, 126 for paraffin imbedding, 117, 119

Mounting film preparations, 85 paraffin sections, 119

Mouse cages, 342 holder, 351 scales, 341

Mucor mucedo, 126

Mucorinæ, 126

Mueller's desiccator, 307

Muffle furnace, 28

Muirs's capsule stain, 100 flagella stain, 101

Museum preparations of bacteria, 407 of tissues, 404 sealing of, 406

Mycelium, 126

Mycoprotein, 135

Naegeli's solution, 191

Naehrstoff agar (Hesse and Niedner), 199

Naked flame, 28

Neisser's stain modified, 111

Net micrometer, 63

Neutral litmus solution, preparation of, 179 red, 94

Nitrate bouillon, 185 peptone solution (Pakes), 186

Nitric organisms in soil, 478

Nitrosoindol reaction, 287

Nitrous organisms in soil, 477

Normal averages (t.p.r.), 372 serum, 375

Nosepiece, 57 double, 58 triple, 58

Navy's anaerobic method, 244 jars, 245

Nuclei, to stain, 105

Nucleus of bacteria, 135

Numerical aperture, 56

Nutrient media, 146

Nutrose agar (Eyre), preparation of, 172

Object marker, 61

Objectives, 55

Oblique tube cultures, 223

Ocular micrometer, 63

Oculars, 55

Oese, platinum, 71

Oïdium, 128

Oil of garlic, 27 of mustard, 27

Oleic acid agar (Fleming), 201

Omeliansky's nutrient fluid, 189

Operation tables (Eyre's), 352 (Tatin's), 351

Opsonic index, 393

Opsonic index, determination of, 390

Opsonin, 387

Optical characters of colonies, 267

Optimum reaction of medium, determination of, 305 temperature, determination of, 298

Organisms of suppuration, 409

Orsat-Lunge gas apparatus, 292

Orth's carmine, 96

Oxford stain for Actinomyces, 112

Oysters, analysis of, 463

Pakes' counting disc, 424 filter reservoir, 45

Papier chardin, 158

Pappenheim's stain, 111

Paraboloid condenser, 60

Parachromophorous bacteria, 144

Paraffin method for sections, 117 sections, mounting of, 119 to stain, 121

Paratrophic bacteria, 131

Parietti's bouillon, 202 method of isolating coli-typhoid group, 437

Parsnip medium, 200

Passages of virus, 320

Pasteur-Chamberland filter, 42

Pasteur's pipettes, 10 solution, 191

Pathogenesis, investigation of, 315

Pathogenic bacteria, 131 study of, 408

Pediococci, morphology of, 132

Penicillium, 128

Peptone rosolic acid water, 186 water (Dunham), preparation of, 177

Percentage formula, 496

Perchloride of mercury, 27

Perisporaceæ, 127

Peritrichous bacilli, 136

Permanent preparations of bacteria, 407 of tissues, 404

Petri's dishes, 6

Phagocytic index, 392

Phenol coefficient, 489 production, test for, 287

Photogenic bacteria, 131, 144

Physiological filter, 156

Picric acid solution, 121 (Spengler's), 112

Picrocarmine, 97

Pigment production, observations on, 288

Pipettes, automatic, 13 blood, 11 capillary, 10 cases for, 7 graduated, 6 capillary, 13 Pasteur's, 10 sedimentation, 16 standard graduated, 7 teat, 10 throttle, 13 to clean infected, 20 new, 18 to sterilise, 31

Piridin method of staining spirochætes, 124

Pitfield's flagella stain, 103

Plasmolysis, 135

Plaster-of-Paris discs, 192

Plate box, 7 cultures, description of, 261 preparation of, 226 levelling stand, 228

Plates, Petri's, 6 to clean infected, 20 new, 18 to sterilise, 31

Platinum needles, 71 method of mounting, 71

Pleomorphism, 133

Polar germination, 140 granules, 136

Polkoerner, 136

Polychrome blood stains, 97

Pooled serum, 379

Porcelain filter, 42 Berkefeld, 42 Chamberland, 42 Doulton, 42

Post-mortem examination of experimental animals, 396

Potato gelatine (Eisner), 204 (Goadby), 214 medium, preparation of, 174

Potted meat, analysis of, 460

Pouring plates, 227

Preparation of experimental animals, 335

Preservatives in milk, 442

Pressure temperature table, 500

Primary colours, action of, 309

Proteid free broth (Uschinsky), 183

Proteolytic enzymes, tests for, 277

Prototrophic bacteria, 131

Psychrophilic bacteria, 143 pathogenic effects, 315

Pus, collection of, 373

Pyrogallic acid solution, 293

Qualitative analysis of air, 470 of milk, 446 of sewage, 467 of soil, 476 of unsound meat, 462 of water, 426

Quantitative analysis of air, 468 of milk, 444 of sewage, 466 of soil, 473 of unsound meat, 460

Rabbit cages, 343 scabies, treatment of, 338 scales, 340

Raising virulence of organisms, 320

Ramsden's micrometer, 66

Range of medium reaction, measurement of, 305 of temperature, measurement of, 298

Rat cages, 342

Raw milk, Saul's test for, 442

Reaction of medium, 305 optimum, 305 range of, 305 scale, 153

Reduced pressure and temperature table, 501

Reducing agents, production, 389 tests for, 289

Reduction of nitrates, 389

Reichert's thermo-regulator, 218

Relation of bacteria to environment, 142

Removal of material from culture tubes, 74

Rennin enzymes, tests for, 279

Reproduction of bacteria, 136

Resistance glass, 6 to lethal agents, 306

Resting stage of bacteria, 137

Restrictions upon experimental inoculations, 334

Ribbert's capsule stain, 101

Roll cultures, 226

Rosolic acid peptone solution, 186

Rosindol reaction, 286

Roux's anaerobic culture method, 237 culture bottle, 5

Sabouraud's medium, 193

Saccharomyces, morphology of, 129

Safranine, 94

Salicylic acid in milk, test for, 443

Saprogenic bacteria, 131

Sarcinæ, morphology of, 132

Saul's test, 442

Scales, decimal, 340 trip, 164

Scalpels, to sterilise, 32, 33

Schallibaum's solution, 121

Scheme for study of bacteria, 259

Schizomycetes, classification of, 131 morphology of, 131

Scissors, to sterilise, 32

Sealing museum jars, 406

Searing iron, 397

Sections, special staining methods for, 121

Sedimentation pipettes, 16 tubes, 9

Selecting objectives, 57

Sensitising red blood cells, 395

Serial cultivations, 251

Serological examination of blood, 378

Serum agar (Heiman), 210 (Kanthack and Stevens), 211 (Libman), 212 plates, 250 (Wertheimer), 211 bouillon, 210 collection of, 379 dextrose water (Hiss), 188 inspissator, 169 sugar media (Hiss), 188 water, preparation of, 170

Sewage, analysis of, qualitative, 467 quantitative, 466

Shake cultivations, 225 description of, 271

Shape of colonies, 262

Shaving experimental animals, 349

Shellfish, analysis of, 463

Silicate jelly (Winogradsky), 198

Single stain for spores, 106

Size of colonies, 262

Slanted tube cultures, 223

Slides, to clean new, 22 used, 23

Smear culture, 224 description of, 268

Soap liquid, 346

Soda solution, storage of stock, 154

Sodium bicarbonate in milk, test for, 443

Soil, analysis of, qualitative, 476 quantitative, 473 collection of samples, 471

Solid media, 147

Soluble toxins, 144

Soyka's milk rice, 189

Spear-headed spatula, 402

Special media, 182

Specific serum, 379 dilution of, 382

Spherical aberration, 55

Spirillum, morphology of, 133

Spirochæta, morphology of, 133

Spirochætes in tissues, to stain, 124

Spleen extract, 149

Sporangium, 127

Spore formation, arthrogenous, 138 endogenous, 138 method of, 138, 273 germination, method of, 140, 274 observation of, 140, 273

Spores, characters of, 139 classification of, 139 double stain for, 106 to stain, 106

Stab culture, 224 description of, 265

Stage micrometer, 62 of microscope, 52

Staining methods, 90 paraffin sections, 121 reactions of bacteria, 274

Stains intra-vitam, 77 negative (Burri), 77 rack for, 72

Standard graduated pipettes, 7 soda solution, 154

Standardisation of media, 154

Standardising bouillon, 155

Staphylococci, morphology, 132

Staphylococcus in milk, 456

Steam steriliser, Arnold, 35 Koch, 35 to use, 35 streaming, 35

Sterigma, 127

Sterilisation by chemicals, 27 by dry heat, 28 by filters, 40 by moist heat, 32 by streaming steam, 35 by superheated steam, 36 of albuminous liquids, 32 of gases, 40

Sterilising agents, 26

Stichcultur, 224

Stock dilutions, 497 nutrient media, 163 plate for isolation work, 253

Storage of media in bulk, 159 of tubed media, 161

Store boxes for media, 161

Streak culture, 224 description of, 268

Streaming movement, 80 steam, 35

Streptobacilli, morphology, 133

Streptococci in soil, 477 in water, detection of, 432 morphology of, 132

Streptococcus pyogenes longus in milk, 455

Streptothrix, morphology of, 133

Strichcultur, 223

Structure, internal, of colonies, 265

Study of pathogenic bacteria, 408

Subcutaneous inoculation, 353

Subdural inoculation, 361

Substage condenser, 54

Sugar agar, 185 dextrose bouillon, 184 gelatine, 184 media, preparation of, 177

Sulphindigotate agar, 181 bouillon (Weyl), 181 gelatine (Weyl), 181

Sulphuretted hydrogen in cultures, test for, 290

Sunlight, action of, 309

Superheated steam, 36

Superior lethal coefficient, 310, 313

Suppuration, organisms of, 409

Surface characters of colonies, 264 plates, 230

Surgical motor, electric, 360

Swarm spores, 127

Syringe for subcutaneous inoculation of solid material, 354 hypodermic, 344

Tatin's operating table, 351

Taxonomy, 262

Teat-pipettes, 10

Temperature, action of, 299 optimum, 298 pressure table, 500 range, 298 taking, 340

Test objects for objectives, 57

Testing filters, 478

Test-tubes, 3 to clean infected, 19 new, 18 to plug, 24 to sterilise, 31

Tetracocci, morphology of, 132

Thermal death-point, 143 determination of, 298 of spores, 301, 304 of vegetative forms, 298, 303

Thermophilic bacteria, 143

Thermo-regulators, Hearson's capsule, 218 Reichert's, 218

Thionine blue, 92

Thiothrix, morphology of, 133

Thresh's water collecting bottle, 418

Throttle pipettes, 13

Tinned meat, analysis of, 460

Tissue medium (Noguchi), 214 stains, 95

Tissues for sectioning, fixing, 114 freezing, 116 hardening, 114 imbedding, 118 preparation of, 114 washing, 115

Titration of media, 150

Torulæ, differentiation from saccharomyces, 130

Total acidity, 280

Toxins, testing of, 318

Trephines, 360

Triple nosepiece, 58

True motility, 80

Tube cultures, preparation of, 222 length, 50

Tubercle bacillus in milk, 453 to stain, 110, 124

Tuberculous guinea-pig, cadaver of, 454

Tubing nutrient media, 160

Turnip media, 200

Unna-Pappenheim's stain for sections, 123

Unsound meat, analysis of, 460

Urine agar, 188 gelatine, 187 (Heller), 188 media bouillon, 187

Uschinsky's solution, 183

Valency of specific sera, 386

Van Ermengem's flagella stain, 104

Vegetative stage of bacteria, 136

Vesuvin, 94

Vibrio choleræ in milk, 452 in water, 439 morphology of, 133

Virulence, attenuating, 321 of organisms, 320 raising, 320

Vivisection license, 334

Voges holder, 350

Volatile oils as disinfectants, 27

Warm stage, 58

Washing red blood cells, 388 tissues, 115

Water, analysis of, qualitative, 426 quantitative, 416 steriliser, 33

Weighing animals, 340

Welch's capsule stain, 101

Wertheimer's serum agar, 211

Wheat bouillon (Gasperini), 193

Whey agar, 195 gelatine, 195

Wine must, 192

Winogradsky's solution I, 198 II, 198

Wire crates for test-tubes, 31

Wood ash agar, 201

Working up plates, 252

Wort agar, 176 gelatine, 176

Wright's anaerobic method, 239

Yeast water (Pasteur), 191

Ziehl-Neelsen's stain, 110

Zooglœa, 134

Zymogenic bacteria, 131

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