276 



r \CTKRIA IN RELATION TO PLANT DISEASES. 



Page. 



C.-iuze, surgeon's, uses in laboratory 102 



Gelatin, 



antiseptic salts in 30 



brands recommended for bacteriological 



work 31 



composition of 3 



impurities in 30 



melting point of 30 



nitrates in 224 



per cent recommended for media 30 



plate-cultures, stabs, streaks 20 



standard nutrient, preparation of 196 



sterilization of. p$ 



variation of same organism nn 180 



with cane-sugar 51 



with high melting point 225 



with malic acid 51 



with soluble starch, etc S 1 



Gelatinization, of old milk-cultures 46 



Gelidium, species, source of agar-agar 31 



Generic characters based on morphology 156 



Generic names rejected 174 



Gentian violet, 



Ehrlich's anilin-watcr 187 



Flexner's anilin 187 



Gerlach, germicidal action of lysol 251 



Germicides 74 



literature on 250 



Germination, spores should be subjected to. .. 21 



Gessard, green-fluorescent bacteria 237 



Giltay & Aberson, culture-medium for denitri- 

 fying organisms 198 



Glassware. 



cleaning and sterilization of TOO 



pencils for writing on in 



solubility of 129, 223 



Globig, thermophilic bacteria 248 



Glue, blue-pigment bacteria injurious to 237 



Glycerin, 



agar 33, 196 



gelatin 262 



mounts, sealing of 262 



Goriansky, wood-vinegar as a disinfectant. .. . 252 



Gram's stain 188 



Nicolle's modification 222 



Grape-sugar 



harmful effect of 223 



test for, in plant tissues 208 



Green, germicidal value of copper salts 251 



Green bacteria 237, 238 



Green-fluorescent bacteria 65 



Gessard's studies 237 



Jordan's studies 238 



Thumm's studies 238 



< iriess-Ilosvay's reagent 229 



C.rimbert, on value of syuthrtir media 51 



Growth of bacteria, 



manner and rapidity of 27 



on media exhausted for other <n -gam'sms. .. 211 



rates of, in fluid cultures 42 



restrained by acid gelatin 30 



Grove, glycerin mounts rendered air-tight.... 262 

 Grubcr, resistance of spores 246 



Page. 

 Gnillebeau & de Freudenreich, agar made 



without filtering 223 



Haegler, centrifuging agar 225 



Halation, means of avoiding 136 



Hallier, views concerning morphology 176 



Hands, disinfection of 252 



Hanging-drop cultures 22 



containing single organism 27 



manner and rapidity of growth at given 



temperatures 27 



Hankin. germicidal action of river water 251 



Harris, collodion sacs, method of making 229 



Haswell, method of substituting alcohol for 



water 226 



Hauser, 



spore-stain 194 



preservation of cultures for museums 263 



Heat, 



as a means of separating organisms 106 



as a sterilizer for surface of tissues 13 



dry, cause of resistance of spores to 218 



effect on pigmentation, pathogenicity, spor- 



ulation 87 



enzymes injured by moist 67 



influence of substratum on resistance to. 210,247 



Heidenhain's iron-haematoxylin 180 



Heim, anaerobic cultures of 231 



Hellstroem, grape-sugar, harmful effect of. . . 223 

 Hempel, 



burette for gas-analysis 55 



pipette for liquid reagents 55 



Henle, on proofs of pathogenesis q 



Herter & Foster's test for indol 201 



Hesse, 



media for water-bacteria 196. 258 



method of cultivating anaerobes 230 



Hill's hanging-block method 22, 228 



Hinterberger, method of staining flagella.... 220 

 Hiss, media of, 



for differentiation of motile bacteria 26 



for differentiation of typhoid, colon, and 



allied bacilli 230 



Hitchens, on autoclaving bouillon containing 



sugar 99 



Hoffmann, infiltration in vacuo 226 



Hoods, 



improvised 104 



in laboratories 104 



Host, color changes in, 



due to injury other than that caused by 



parasite 66 



due to oxidation phenomena 65 



due to parasite 65 



Host, reaction to parasitic attack 8 



Host-plants, kinds attacked by a single para- 

 site 87 



Hydrochloric acid, in culture-media 98 



Hydrogen, 



compressed, where obtained Si 



cultures in 56, 57 



test for, in fermentation-tubes 61 



Hydrogen-cellulose ferment 106, 209 



