DAIRY FARMING — DAIRYING. 91 



Farrington (E. S. R., 13, p. 986), and A Modified Cream Test Bottle, by E. H. Farring- 



ton (E. S. R., 14, p. 1010). 



Wisconsin curd test (pp. 132-134). — Factory Tests for Milk, byS. M. Babcock, H. L. 

 Russell, and J. W. Decker (E. S. R., 10, p. 385), and Improved Curd Test for Detec- 

 tion of Tainted Milks, by S. M. Babcock, H. L. Russell, and J. W. Decker | E. S. ]{., 

 11, p. 599). 



Alkaline tablet test (pp. 184-142) .—Alkaline Tablet Test of Acidity in Milk and 

 Cream, by E. H. Farrington (E. S. R., 8, p. 933; 9, p. 589). 



Investigation of creamery prohlemx (pp. 143-156). — Effect of Salt on the Water Con- 

 tents of Butter, by E. H. Farrington (E. S. R., 12, p. 86); White Spots on Butter, 

 by F. H. Farrington (E. S. R., 12, p. 87); Pasteurization of Skim Milk, by E. H. 

 Farrington (E. S. R., 12, p. 85); Columbia Air Churn, by E. H. Farrington and F. 

 Dewhirst (E. S. R., 13, p. 84); Composition of Frozen Milk, by E. H. Farring- 

 ton (E. S. R., 14, p. 1010); Score of Butter as Affected by Size of Package, by 

 E. H. Farrington (E. S. R., 11, p. 599); Difficulties in the Way of Drawing Conclu- 

 sions from Scores of Butter When Based on One Judge's Scores, by E. H. Farring- 

 ton ( E. S. R., 14, p. 1011), and Power Tests of Cream Separators, by A. W. Richter 

 (E. S. R., 8, pp. 170, 732). 



Miscellaneous dairy investigations (pp. 156-165). — The Fat Globules in Cows' Milk, 

 by F. W. Woll (E. S. R., 8, p. 337); On the Average Composition of Milk of Pure- 

 Bred Cows of Different Breeds, by F. W. Woll (E. S. R., 13, p. 985) ; Investigations 

 of Methods of Milking, by F. W. Woll (E. S. R,, 14, pp. 694, 1007); Examination of 

 Dairy Salt, by F. W. Woll (E. S. R., 11, p. 585; 12, p. 91) ; A Composite Milk Sampling 

 Pipette, by J. W. Decker (E. S. R., 12, p. 91 ); A Comparison of Reagents for Milk 

 Proteids, with some Notes on the Kjeldahl Method of N Determinations, by A. 

 Vivian (E. S. R., 12, p. 19), and A Rapid Method of Estimating Salt in Butter, by 

 A. Vivian (E. S. R., 13, p. 16). 



Statistical investigations relating to the dairy industry (pp. 165, 166). — Statistics from 

 52 Wisconsin Separator Creameries, by E. H. Farrington (E. S. R., 9, p. 286; 10, p. 

 792) ; Statistical Data Relative to the Cheese Industry of Wisconsin, by J. W. Decker 

 (E. S. R., 10, p. 790); Distrihution of Cheese Factories in Wisconsin, by S. M. Bab- 

 cock, H. L. Russell, and J. W. Decker (E. S. R., 10, p. 792) ; The Cheese Industry: 

 Its Development and Possibilities in Wisconsin, by S. M. Babcock and H. L. Russell 

 (E. S. R., 9, p. 387), and The Dairy Industry in Wisconsin with Wail Map Showing 

 Distribution of Creameries and Cheese Factories in 1901, by H. L. Russell (E. S. R., 

 13, p. 690). 



The fat testing of cream by the Babcock method, E. H. Webster ( U. S. 

 Dipt. Agr., Bureau of Animal Industry Bui. 58, pp. 29, pis. 2, fig. 1). — Investigations 

 in creameries in several western States revealed, according to the author, some sur- 

 prising facts in regard to the general practice of handling the Babcock method in 

 cream testing. 



"Men who used the test daily were found to be at fault in many particulars, and 

 in some instances not the first idea of the principle underlying the method seemed 

 to be in the mind of the operator." This is attributed in part to carelessness on the 

 part of the operator, and in part to improper instruction given for the use of the 

 Babcock test as applied to cream. 



This bulletin describes the manipulation of the test in detail, including the results 

 of original tests, notes concerning faults which have been observed, and suggestions 

 as to better methods. The three vital points in making the test, (1) a true sample of 

 the cream to be tested, (2) an exact quantity of the sample in the test bottle, and 

 (3) reading the test accurately, are described in the order mentioned, and condensed 

 directions for making fat tests of cream are presented in the form of a summary to 

 the bulletin. 



