Cream Testing at Creameries. 



167 



rmnmmm 



the number of creamery inches of cream which the 

 various patrons deliver to the factory; one inch of cream 

 contains 113 cubic inches. 1 The driver pours the patron's 

 cream into his 12-inch gathering pail, measures it with 

 his rule and records the depth of the cream in the can, 

 in inches and tenths of an inch. The cream is then stirred 

 thoroughly with a ladle or a stout dipper, and a sample 

 is taken by filling a test tube from the sample case, to the 

 graduation mark by means of a small conical dipper pro- 

 vided with a lip. A driver's case contains either two or 

 three "cards," holding fifteen test tubes each (see fig. 56). 



The tubes as filled A 



are placed in the 

 case and the cor- 

 responding number 

 is in each instance 

 recorded in front of 

 the patron's name 

 together with the 

 number of inches 

 of cream furnished 

 by him. 



On arrival at the 



Creamery the tin FIG. 56. Cream-gatherer's sample case. 



cards holding the tubes are placed in a vessel filled with 

 water of the temperature wanted for churning (say, 60 

 in summer and 65 to 70 in winter.) When ready for 

 churning they are placed in the oil-test churn, the coyer 

 of the churn put on, and the samples of cream churned 



i I. e., a layer of cream one inch deep in a 12-inch pail; two inches in 

 an 8-inch pail contains 100.531 cubic inches, two inches in an 8%-inch pail 

 110.18 cubic inches, and two inches in an 8%-inch pail 113.49 cubic inches. 



CARD DRIVERS CASE 



