Index. 



297 



Standards of purity, Government, 

 for milk and its products, 254. 



Starch in cream, 250. 



Steam turbine testers, 61. 



Stokes' acidity pellets, 125. 



Storch's test, 248. 



Sulfuric acid, 64; table showing 

 strength of, 67 ; testing strength 

 of, 65. 



Sweetened condensed milk, Bab- 

 cock test for. 99. 



Swedish acid bottle, 47. 



Swedish acid tester, 67. 



Tank for cleaning test bottles, 43. 



Temperature of turbine testers, 

 36 ; of fat when tests are read, 

 36 ; of milk, influence on tests, 

 152. 



Test bottles, 30, 38 ; apparatus 

 for cleaning, 41, 44 ; calibration, 

 48 ; cleaning, 41 ; cream, 79 ; 

 draining-rack for, 42 ; marking, 

 39 ; skim milk, 92 ; rack for use 

 in creameries and cheese facto- 

 ries, 166 ; tank for cleaning, 43. 



Testers, 54 ; ascertaining speed of, 

 58 ; electrical, 63 ; hand, 60 ; 

 power, 61. 



Testing cows, number of tests re- 

 quired during a period of lacta- 

 tion, 147. 



Testing milk and its products, 1 ; 

 on the farm, 142. 



Test sample, size of, 153. 



Tests of cows, official, 150. 



Thermometer scales, comparison 

 of, 282. 



Thorner's method, 5. 



Total solids in milk, 10; determi- 

 nation, 221. 



Trowbridge method of calibration, 

 49. 



Turbine testers, 61 ; hot, errors in. 



Volatile acids in butter fat, de- 

 termination, 241. 



Wagner skim milk bottle, 94. 



Waste acid jar, 40. 



Water, calibration with, 48 ; deter- 

 mination of, in butter, 231, 233 ; 

 in cheese, 243 ; in milk, 220 ; 

 reservoir for, 70 ; to be used in 

 the Babcock test, 69. 



Waterhouse test, 243. 



Watering of milk, detection of, 

 116 ; watering and skimming, de- 

 tection of, 117. 



Weights and measures, comparison 

 of metric and customary, 284. 



Westphal balance, 219. 



Whey, 22; Babcock test for, 94; 

 chemical analysis, 228 ; composi- 

 tion, 258; definition, 256. 



Winton cream bottle, the, 79. 



Wisconsin creamery butter, sum- 

 mary of analyses, 189. 



Wisconsin curd test, the improved, 

 137. 



Wisconsin high-pressure oven test, 

 for water in butter, 238. 



Wollny refractometer, 9. 



World's Fair breed tests, compo- 

 sition of butter from, 188 ; vari- 

 ation in quality of milk, 153. 



Yield of butter, calculation of, 

 187, and butter fat test, 187 ; 

 from different grades of milk, 

 192 ; table showing, from 1 to 

 10,000 Ibs. of milk, testing 3 to 

 5.3 per cent., 278. 



Yield of cheese, calculation of, 

 199 ; relation between, and qual- 

 ity of milk, 200 ; table showing, 

 corresponding to 2.5 to 6 per 

 cent, of fat, with lactometer 

 readings of 26 to 36, 281. 



