156 SUBJECT INDEX. 



PAGE 



Litmus lactose agar plate, technique of 45 



, red colonies in 66 



Litmus milk, preparation of 123 



Liverpool tap-water, B. coli in 85 



Loch Katrine, bacteria in 10 



Loch of Lintralthen, bacteria in 10 



Loeffler's blood serum 125 



Lynn tap-water, bacteria in 10, 47 



MacConkey's media, preparation of 126 



Mainz, bacteria in wells at 15 



Maltose broth, preparation of. 122 



Manchester ship canal, B. coli in 45, 85 



Massachusetts Institute of Technology, blank for recording bacterio- 

 logical analysis 69 



Massachusetts State Board of Health 9, 72, 86, 88 



, B. coli isolation 87 



, bacteriological counts 40 



, examination of springs 16 



, methods for isolation of B. coli 69 



Mechanical filtration 40 



Medford tap- water, bacteria in 10, 47 



Media, alkaline, for isolation of Sp. cholerae 55 



, bacteria developing on various 30 



, comparability 20 



, composition of 29 



, limitations of ordinary 19 



, percentage of bacteria developing on various. 21 



, practical requirements for 20 



, reaction of 29 



, standard methods 119, 121 



Merrimac River, bacteria in . 9, 40 



Metabolism of different classes of bacteria 37 



Mice, B. coli in 74 



Micro-organisms, effect of, upon bacteria 1 1, 12 



Milk, preparation of 123 



test 71 



Milton tap-water bacteria in 47 



Mississippi River, B. coli in 83, 90 



Missouri River, B. coli in 90 



