INDEX. 



2 73 



Page. 

 Classification continued. 



water-bacteria 203 



Winslow & Rogers 265 



with reference to nitrogen-nutrition 175 



Cleaning, glassware 100, 226, 227 



Cleaning mixture, chromic acid 200 



Clostridiutn pasteurianum, separation by heat. 106 



Cloth, impervious to light 143 



Clouding, 



nature of, in culture-fluids 42 



rapidity of, in culture-fluids 42 



Coccaceae, revision of 265 



Coccobacteria septica 176 



Coconut-water, as a culture-medium 41 



Cocothrix 172 



Cohn, 



Bacillus of 158 



Bacterium of 166 



nutrient solution of 197 



rise of temperature in cotton-wool waste. . . 248 



Collections, the making of 117 



Collodion, 



sac-method for study of antagonism 73 



sacks, preparation of, for dialyzing 37, 229 



Colonies, 

 acid-forming, special agar for detection of. 51 



characters to be noted on solid media 29 



counting of 36 



effect of physical conditions on appearance 



of 182, 183 



measurement of 115 



photographing of 134 



Color-scales, 



importance of 109 



kinds recommended 263 



Comma bacillus, 



classification of 173 



Koch's paper on 212 



Conditions which are unfavorable, influence 



on cell-unions 22 



Conrad, fermentation of sauerkraut 257 



Constancy of characters 183 



Contact-irritation 27 



Contamination, how to avoid 103 



Control-plants, proper behavior of 15, 16 



Coplin's staining jar 119 



Copper-chrom-filter 201 



Copper salts, germicidal value of 251 



Copper sulphate 74 



Corallin, test for slime derived from starch.. 221 

 Cotton, 



dry heating in bulk 99, 101 



natural infection in 95 



surgeons' absorbent, sterilization of 101 



waste, for laboratory use 107 



Counting-plates, ruled 36, 227 



Cover-glasses, cleaning of 227 



Cover-glass preparations 20, 28 



Covers, discarded, care of 107 



Cramer, resistance of spores to dry heat, 



cause of 218 



Crenothrix 162 



Cristiani, bacteria in upper air 255 



Page. 



Cross-inoculations 186 



Cross-level 149 



Crystals, 



formation of, in milk-cultures 46 



in old cultures 66 



prevent making thin sections 122 



Cucumber, natural infection in 92,178,215 



Cultural characters, 



value of 178 



variations in, due to environment 182, 183 



Culture-fluids, 



cold sterilization of 43, 52 



examination of, before inoculation 42 



growth in, characters of, to be noted 42 



non-synthetic 195 



synthetic 197 



time required for clouding 42 



Culture-media 223 



agar-nutrient 31, 195 



beef-broth 45, 195 



blood-serum 48 



containing sugars, sterilization of 98 



cooked vegetables for 40 



Dunham's solution 195 



egg-albumen 48 



egg-yolk 49 



for luminous bacteria 60, 198 



gelatin 29, 196 



hydrochloric acid in 98 



litmus milk 48, 196 



milk 46 



non-synthetic 195 



plant juices used as 41 



preparation and care of 97 



protection from light 53 



raw, preparation of 41 



record-book for 109 



silicate-jelly 36, 198 



special, for differential purposes 229 



starch-jelly 50, 196 



sterilization of, in autoclave 98 



storage of 99 



synthetic 197 



titration of 69 



Culture-rooms 104 



Cultures, 



elective 106 



involution forms in 23 



method of keeping notes on 113 



methods of testing purity 184, 185 



plate, stab and streak 29, 30 



preservation of, in museums 262 



storage of stock 123, 263 



treatment of spilled 107 



Cyanophyceae, cilia on side walls of 211 



Cystobacter 165, 218 



Cytase 67 



Dallinger, measurement of unstained flagella, 



170, 219 



Dallinger & Drysdale, Bacterium termo, fla- 

 gella of 20 



Dangeard, green bacteria 237 



Dannappel, spores sensitive to heat 22, 246 



