INDEX. 



Page. 



Hydrogen generated with zinc 54, SS 



hydrogen sulphide in, means of avoiding 



evolution of 56 



impurities in 55 



removal of last traces of oxygen from 57 



washing of 56, 57 



Hydrogen peroxide, 



use in staining spores 218 



substance causing liberation of oxygen 



from 67, 234 



Hydrogen sulphide 62, 242, 243 



Hypo for fixing 142 



Tee, bacteria in 247, 258 



India oil-stone 121 



Indigo-carmine, reduction of, by bacteria 62 



Indigo-blue, production of 257 



Indol, 



production of, media suitable for 62 



tests for 62, 201 



Infection, 



carriers of 91, 178, 215 



conditions favoring 16 



due to ultramicroscopical organisms.... 18,211 



natural methods of 8, 92 



Infection, stomatal 84, 86, 90, 92, 108, 126 



Infection-experiments, value of direct 9 



Infectious material, final disposal of 106 



Infiltration, 



in vacuo 8, 226 



with paraffin 118 



Injection-needle 101, 227 



Inoculated organism, method of proving viru- 

 lence 16, 185 



Inoculated plants, labeling of 112 



Inoculation, 



cages 108 



checks on 16, 186 



cross 186 



methods of 108 



with more or less exact numbers of bac- 

 teria 226 



Inoculation-experiments, 



conditions favoring 16 



how carried on 15 



importance of 14 



where best made 16 



with mixed organisms 9, 72 



Insects, inoculation by means of. . 91, 108, 178,215 



Instruments, sterilization of 100, 107 



Intensifying negatives 142 



Invertase 66 



Investigation, training necessary for 181 



Involution-forms 23, 177 



Iodine-starch test for nitrites 63 



Iron-haematoxylin 188, 189 



Irritation, contact 27 



Isochromatic plates, 



for photographing stained sections 140 



time of exposure with 143 



uses of 136 



Isolation of bacteria, 



from diseased tissues, methods of n 



on slant agar, etc 227 



Page. 



Twanoff, penetrating power of formalin 252 



Jeffer, ruled counting plate 36 



Jennings, contact-irritation 27, 254 



Johan-Olsen, branching forms 217 



Jolles und Winkler, bacteria in oleomarga- 

 rine and butter 259 



Jones, enzymes from soft-rot organisms 68 



Jordan, pigments produced by green-fluores- 

 cent bacteria 65 



Kabrhel, methylen blue as oxygen indicator. . 232 



Kaiser, glycerin-gelatin 262 



Karten, chemical analysis of agar-agar 32 



Kasansky, effect of winter cold on bacteria. . . 247 



Kaufmann, method of staining capsules 194 



Kedrowski, anaerobes grown with aerobes. . . . 231 



Kendall, decimal system 176 



Kephir 214 



Kern, two endospores in a cell 22 



Kipp gas-generator 54 



Kitasato flask 68 



Klebs, fractional method of culture 226 



Klein, A., 



anaerobic apparatus of 232 



spore-stain 219 



Klein, L., bacilli bearing green spores 218 



Klepzoff, freezing experiments of 246 



Knauer, cleaning slides and cover-glasses.... 226 



Knives, microtome 122 



Koch, A., branching of B. pediculatum 221 



Koch, R., 



comma bacillus of 173 



demonstration of flagella by stains 20 



importance of photography in microscopic 



works 23 



magnification recommended for photomicro- 

 graphs 24 



methods of isolating parasite from tissue, n, 226 



paper on tuberculosis 153 



rules of proof 18, 226 



streak-method of isolating bacteria u, 226 



views concerning morphology 176 



Konradi, germicidal action of soaps 253 



Kraemer, germicidal action of copper 253 



Kratschmer und Niemelowicz, stringy bread . . 260 



Krause, Bacillus pyocyaneus 223 



Krueckmann, preservation of cultures for 



museums 263 



Kuehne, 



carbol methylene blue 188, 222 



malachite green 222 



Ktintsler, animal origin of bacteria 264 



Kuntze, medium for Bacillus prodigiosus 238 



Kuprianow, device for filling test tubes 227 



Labels, for tubes, flasks, etc no, in 



Lab ferment 67 



Laboratory, 



care of 96 



equipment of 94 



things to be considered in location of 94 



Lamella, middle, dissolution of 67 



Lamprocystis 163 



Lantern-slides, 



apparatus for making 143, 146 



