INDEX 
Iodoformogen, 134 
Iodoform reaction for acetone, 195 
—— — — ethyl alcohol, 194 
Todo-hemol, 134 
Todol, 134 
Todomuth, 134 
Isolation of B. enteritidis sporogenes from 
water, 299 
—— — B. typhosus from water, 317 
—~- — pure cultures, 10 
Isoleucine, 185 
J 
Jeffer’s counting plate, 9 
Jensen’s system of classification of bac- 
teria, 97 
Jones’ anaerobic method, 23 
Jordan’s classification of water bacteria, 
290 
— non-protein medium, 66 
K 
Kendall and Day’s procedure for B. 
typhosus in feces, 255 
Ketchup, 514 
Key to Aspergillus molds, 210 
— — genera of budding fungi, 215 
— —— — true yeasts, 214 
~-- — penicillia, 207 
Koch’s concave slide, 76 
— culture flask, 5 
Koettstorfer number of fats, 199 
Kolle culture flask, 5 
Kusserow’s method for determining 
fermenting power of yeasts, 221 
Kuster’s anaerobic method, 18 
L 
Labarraque’s solution, 137 
Lactic acid fermentation, 193 
—- — in the stomach, 233 
Lactose bile in water analysis, 311 
Lafar’s counting plate, 9 
Leavening agent in self-rising bread, 223 
Leeuwenhoeck’s work on bacteria, 94 
Leffman-Beam test for milk fat, 369 
587 
Lehmann and Neumann’s work on 
classification, 97 
Lellendahl’s staining dish, 80 
Lentz’s anaerobic apparatus, 18 
Leucine, structure, 185 
—, enumeration, 15 
Leucocytes in milk, 408 
Levine’s eosin-methylene blue agar, 54 
Liebermann’s reaction, 192 
Liebig’s meat extract, 41 
Life cycles of bacteria, 99 
Light, sterilization, 128 
Lime in disinfection, 136 
Lipman-Brown medium, 66 
Liquid chlorine, addition to water, 331 
Lister culture flask, 5 
Lister’s work on milk, 95 
Litmus gelatin, 56 
— lactose agar, 48 
— milk, preparation, 71 
— —, cultural characteristics in, 115 
— whey, 71 
Léhnis’ method for bacteria in butter, 
426 
—_—— — — — cheese, 432 
Loss of virulence on culture media, 118 
Low temperature, effect on bacteria, 504 
Lugol’s iodine solution, 90 
Lumsden and Stimson’s method for 
B. typhosus in feces, 254 
Lymphocytes, staining of, 89 
Lysine, decomposition, 245 
—, structure, 186 
Lysol in disinfection, 141 
M 
MacKenzie’s culture flask, 68 
McLeod’s anaerobic method, 18 
Magnifying power of microscope, 29 
Magnification tables, microscopes, 33, 34 
Malachite green medium, 52 
Malt extract medium, 58 
Mayer’s culture fluid, 62 
Meat extract, composition of, 40, 41 
— —, partition of nitrogen in, 42 
— infusion, preparation, 40 
—- juice (infusion), 41 
Medium for fungi, 65 
