328 
Sour curdling, 15 
odor and taste, 30 
Soxhlet’s test, 247 
Specific gravity, determination 
of, 228 
of milk, 30 
of milk solids, 4e* ~- 
mination of.’ 
Spoiled feed, effects of: 
114 Te 
Stable, ceiling, 139 
drop, 144 
exposure, 129 
exterior, 129 
feed trough, 143 
floor of stall, 144 
gutter, 144 
interior construction, 139 
light, 146 
location, 129 
manger, 143 
odor of air, 131 
platform, 140 
ties, 145 
type, 129 
walls, 139 
stall divisions, 145 
stanchions, 145 
surroundings, 130 
Stable fly, 165 
Stable-like odor and taste, 29, 30 
taste, 71 
Stable practices, 159 
bedding, 178 
cleaning the cows, 166 
cleaning the stable, 160 
feeding, 175 
milking, 168 
time required, 179 
Stages of lactation, 3 
INDEX 
Stalls, arrangement of, 145 
hospital and maternity, 146 
Standards, legal, for milk and 
cream, 23, 24, 25 
Staphylococcus pyogenes, 59 
Sterilization of milk vessels, 190 
Stewart’s test, 281 
Stokes’ test, 281 
Storch’s test, 298 
Strainers, 173 
Streptococci, examination for, 
272 
of mastitis, 53 
Streptococcus lacticus, 52, 54, 55 
pyogenes, effect of heat on, 
205 
Stringy milk, 69 
“ Strippers,” 5 
Structure of udder, 1 
Surface tension of milk, 33 
Sweet curdling, 15 
Taste, effect of heat on, 213 
examination of, 227 
and odor of milk, 28 
Temperature, effect on growth 
of bacteria, 63 
Total solids, 19 
determination of, 240 
Toxins, 44 
Trembles, 104 
Trommsdorff test, 282 
Tubercle bacilli, 
from cattle, virulence 
of, for man, 75 
conditions under which 
milk is infected with, 
81 
effect of heat on, 205 
examination for, 275 
