Composite Samples of Milk. 153 



breed tests conducted at the World's Columbian Exposi- 

 tion in 1893, in which tests this method was adopted for 

 sampling the milk produced by the single cows and the 

 different herds. 1 The data obiained in these breed tests 

 also furnish abundant proof of the accuracy of the Bab- 

 cock test. 



184. d. The Equity milk sampler. This sampling tube, 

 designed by Kolarik and Werder, is attached to the 

 milk weighing can. After lowering 

 it into the milk the tube is opened at 

 the bottom by pressing on the top, 

 fig. 52. The tube then fills to the 

 height of the milk in the can and is 

 raised by sliding it through the collar 

 that holds it in place. The milk in 

 the tube is then discharged into the r^IJfV- 

 samplejar, fig. 53. // p 



185. e. Composite sampling with a FIG. 53. 

 Lowering one . th j rd sam p| e pipette." Milk is Discbar f in * 



tube into sample 



milk, sometimes sampled directly from the into jar. 

 weighing can into the Babcock test bottle by means of a 

 pipette holding 5.87 cc., which is one third the size of 

 the regular pipette. This quantity is measured into the 

 test bottle from three successive lots of milk from the 

 same patron and the test then made in the ordinary 

 manner. In this way one test shows the average com- 

 position of the milk delivered during three successive 

 days or deliveries. When this method is adopted, as 

 many test bottles are provided as there are patrons; 



i Kentucky experiment station, 8th report, pp. xxx-xxxi. Another 

 form of a milk sampling tube in use at the Iowa experiment station was 

 described and illustrated by Mr. Eckles in Breeder's Gazette, May 19, 1897. 



