INDEX. ABBE condenser and oil-immersion lenses, hints as to the use of, 86 Acid, carbolic, value of, as a germi- cide, 118 Acids and alkalies, production of, by bacteria, 54 Actinomyces bo vis, 260 Actinomycosis, 260 fungus of, 261 growth of, 262 in man, 263 of human liver, 264 resemblance of, to tuberculosis, 262 Activity, vital, in bacteria, results of, 50 Adhesion preparation, 147 .Aerobic bacteria, 45 Aerogenic bacteria, 50, 54 Agar-agar as a culture-medium, 129 advantages of, over gelatin, 150 blood, 131 hemoglobin, 131 preparation of, 129 sedimentation of, 130 Air, bacteriologic examination of, 164 Hesse's apparatus, 165 Petri's filter for, 166 Sedgwick's expanded tube, i67 value of, 167 micro-organisms in, 164 pathogenic bacteria in, 164 Alexin, 78 Alkali albumin ate, Deycke's, 133 Alkaline blood-serum, 133 31 Alkaloids, animal, 51 putrefactive, 51 Anaerobic bacteria, 45 cultivation of, 153 cultures, Novy's jars for, 156 Anilin dyes and bacteria, affinity between, 90 classification of, 90 employment of, in study of bacteria, 90 for bacteriological work, 91 introduction of, in 1877, by Weigert, 26 Animals, experimentation upon, 158 inoculation of, with bacteria, 159, 160 to secure cultures, 148 Anthrax, 356 animals most frequently affected by, 356 antitoxin of, 364 bacillus of, 357 cultures of, 359 discovery of, 356 morphology of, 357 other bacilli resembling, 365 pathogeny of, 361 resistant powers of, 363 staining of, 357 susceptibility of, to heat, coldA etc., 363 foci for the distribution of, 356 immunity to, experiments in de- struction of, 364 in cattle, how acquired, 364 measures to prevent the spread of, 365 means by which infection takes place, 361 481