iN]ii';x. 



270 



]\'Ic,it-cxlracts, bacteria in 260 



^Fcdia for cultures, 



agar 31, 105 



animal fluids 45 



Selatin 20. ro6 



milk 46, 106 



non-synthetic toS 



plant juices 41 



silicate-jelly 4T 



special 4Q 



starch-jelly 50, T06 



sterilization of S^ 



synthetic 40, T07 



\-ee:etaMe media, solid 30 



Media free from spores cpqi- sterilization of 10 Sq 



Mercaptan 02, 243 



Mercuric cliloride 74 



for sterilizing plants before inoculation ToR, log 

 for sterilizing surface of diseased material. 74 



germicidal action of 252 



in hot alcohol, as a fixing fluid S 



preservation of cultures by use of 263 



Messea, classification of 20, 264 



Metcalf, bacilKis softening agar 32 



Meters, for photographic exposures 143 



^retbane-ccllulose ferment 106 



Methods of work, 



checking 184 



literature on 226 



Methylene blue, 



as a test for free oxygen 57, 232 



Loeffler's alkaline 1S8 



reduction of, by liacteria 62, 239 



IMethyl violet, as a germicide 74 



Meyer, effect of liquid air on bacteria 247 



Michaelis, thermophilic bacteria 24S 



Micrococcus 160 



]\Ticrococcns pro,gredicns, small size of iS 



Micrometers, stage u.i 



Micro-organisms, cell-life without 211 



Microscope, 



achromatic objectives for 140. 205 



apochromatic objectives for 130 



for recording exact location of desirable 



fields . . ." 1^9 



Lcitz 1-9 



oculars 130 



bpcncer 



129 



Zeiss, for bacteriological investigations 120 



Zeiss, for photomicrographic work 120 



Microspira ^^^- ^~- 



Microtome, kind preferred 122 



Microtome-knives ^-- 



Microtomc-sections, 



cutting and care of ''-' 



f 119 



mounting ot 



. r 1 10, 120 



staining ot - , 



Microzymas of Bechamp V" 



Migula, classification of ^J 



]\Iilk, 

 a good culture-medium 4/ 



anaerobes in 



Pngn. 



Milk — continued. 



clearing of 46. 2('i7 



coagulation ot, liy bacteria 67 



enormous numbers of bacteria in IQ" 



litmus lO'i 



observations to be made on cultures in 46 



preparation of, for culturc-inedium 4*^ 



reddened lyv bacteria 259 



resistant spores in 4" 



ropiness in 250. 260 



sterilization of 4*1 ■ 9^ 



temperature go\'crns bacterial multiplica- 

 tion in 200 



Minervini, bactericidal action of alcohol 252 



Minimum temperature, 



for growth, how determined 7'^ 



range of -7 



Miquel, 



bacteria in sea-air 25,=; 



thermophilic bacteria 247. 24S 



Mixed cultures, behavior of 7~ 



Mbller's spore-stain 218 



Mnlisch, on luminous liacteria 60 



IMonas '7.3 



Aloore, .\ . capsule-stain 221 



Moore, G. T., 



copper sulphate as a germicide 74 



culture-medium for root-tubercle bacilli. .. . I07 



root-tubercle bacteria 241 



soil-inoculation for legumes 64 



Aloore, V. A., 



na,gella-stain '90 



Moore & Kellernian, action of copper on B 



typhosus in water 97 



^forphological characters. 



change in, due to changed environment 222 



value of '70 



Morphology '9 



extreme views concerning 17'^ 



.general account of i'^ 



generic characters should be based on 156 



hisufficient for differentiation of many spe- 

 cies 25 



literature on 215 



modern views concerning I77 



^fortoii. flagclla-stain 220 



^lotility of Ijacteria 26 



Motor-reflex in bacteria 254 



Mueller, bacterial '-eduction processes 239 



IMuller, genus Vibrio 172 



Muir, capsule-ttain i94 



Murrill, gas-prcs.-ure regulator 78 



^luseums, preservation ot -ultures for... 262,263 



Mustard, natural infection in 92 



Mycobacterium T72 



Myconostoc 161 



Myxobacter T65 



Myxobacteriaceae, characters of 164 



^lyxococcus 165 



Naegeli's nutrient solution 197 



Xakanishi, nucleus, existence of, in liacteria. . 217 



Xcctaries, natural infection through 92 



Wedle-punctures, inoculation by loS 



