176 ILLINOIS DAIRYMEN-S ASSOCIATION. 



may be ordered at a time, reducing cost of expense and danger 

 of breakage. The bottles measured out a year ago not. having 

 perceptably weakened. The transportation charge on these 

 small bottles is very much less than on the Mann's solution. 

 The strength is more uniform than in the case of the Farrington 

 tablets. In using there is less waste of solution pouring into 

 the larger cylinder than is usual where the burette is used. The 

 larger amount of a weaker solution used reduces the per cent 

 of error in the final results. The size of the bottle and the 

 cylinder are more convenient to handle, the cost per test is less. 

 There is no waiting for tablets to dissolve. It is ready as soon 

 as it is shaken up. 



The confusion resulting from the use of two tests for the 

 same work reporting the results in different terms has prompted 

 the suggestion (New York Produce Review, June 8, 1904, page 

 210) that a uniform standard is desirable, and suggests the use 

 of a 50th normal solution, which is in harmony with the practice 

 in this laboratory for the past year and a half, and further sug- 

 gest that buttermakers having Mann's test have but to make 

 up a solution with one part Mann's solution and four parts 

 distilled water, which may be secured from the steam pipe, or 

 rain water may be used. This solution will then be equivalent 

 in strength to a 50th normal if the Mann's solution was right, 

 and with a graduated cylinder such as described above or a 

 burette will enable the buttermaker to report the results in per 

 cent of acidity since 1 cc of this solution will measure .01 

 per cent of acid when the cream is measured with a Babcock 

 pipette. 



It is recommended that the acidity of cream be reported 

 in per cent, as being better for comparison and more convenient. 



To Grade Cream. 



In spite of the reluctance of many creameries to receive 

 cream from hand separators, the amount of butter made from 

 such cream is increasing quite rapidly. The increased value 



