2 GO 



INDEX. 



r>;u-U'ria, reactions produced by, 



111 



relation to oxygen, 27. > 

 to staining reagents, 115 

 to temperature, 28 

 role in nature, 23-25 

 -v^tematic study of, 104-121 



scheme for^ 1(54, 165 

 Bacterium coli commune, 230, 231 

 I Jen eh es, glass, for holding plates, 



86 

 Blood-serum, 69 



Loffler's mixture, 75, 7<> 

 preparation of, 69 

 preservation of, 73, 74 

 solidification of, 71-73 

 sterilisation of, 71 

 Bonnet, 20 



Bottles for staining solutions, 128 

 Bouillon, 57-59 



neutralisation of, (iO, 61 

 Box, iron, in which to sterilize 



plates, 84 



Brownian motion, 110 

 Bulb for water samples, 17'.' 

 Burner, Koch's safety, 93, 94 

 rose or crown, 47 



/ 1 1 1 L< >R< )PHYLL, definition 

 \J of, 22 

 Cohn, 20 



Colonies, characteristic appear- 

 ance of, 168, 169 

 study of, 99-101 

 Cooling-stage, 84 

 Cover-slips, cleaning of, 12.". 

 impression, 126 

 microscopic examination of, 



107 



preparation of, 123-127 

 >U'|is in making, 124 

 Culture-dish for plate-. >~> 

 Cultures, gelatin, 113 

 hanging-drop, 109 

 potato, 113 



in tube, 69 

 pure, 101 

 >tab and smear, 101-103 



method of making, 101, 

 102 



]\EC< >L< >K1Z1 N< i snlutions,139 

 1^ Decomposition, 22, 23 

 Diphtheria, 2-13 



bacillus of, 245 252 



cultivation of, 245-248 

 pathogenic properties of, 



249-252 

 preparation of cultmv> 



from, 243-245 

 staining of, 248 

 Diplococci, 30 



Diplococcus of pneumonia, 194 

 Disinfectants, experiments upon, 



263-257 

 Disinfection, 49-53 



agents employed for, 52, 53 

 in the laboratory, 52 

 inorganic salts for, 49-51 

 methods of, 52 



ERYSIPELAS, 224 

 Esmarch's roll tubes, 87 

 modification of Esmarch's 



method, 88 

 ad vantages of this pro- 

 cess, 89 



roll tubes of agar-agar, S9 

 tube being rolled on ice, 88 

 Experiments, 167 



exposure and contact, 169, 

 170 



r\V(VLTATlVE aerobic and 

 F anaerobic oinani-ms, 28 

 Fermentation, 22, 23, 116 

 Filters, preparation of, 64 ' 

 Flagellae, Loffler's method of 



staining, 136 



Flasks, etc., cleaning of, 77 

 Funnel for filling Sedgwick's 



aerobioscope, 190 

 for filling test-tubes, etc., 79 



pELATIN, 57-62 

 U clarification of, 63 



filtration of, 63 



peculiarities of, 57, " 

 < niarniari's agar-gclatin, 76 



