12 DAIRYING 



151. Detailed information concerning the making of these 

 tests and the official recording of the results can be obtained from 

 the secretaries of each of the dairy cattle associations which at the 

 present time are the following: 



Holstein-Friesian Association, 



Malcolm H. Gardner, Secretary, Delavan, Wis. 

 Guernsey Cattle Club, 



W. H. Caldwell, Secretary, Peterboro, N. H. 

 Jersey Cattle Club, 



J. J. Hemmingway, Secretary, New York City. 

 Ayrshire Breeder's Association, 



C. M. Winslow, Secretary, Brandon, Vt. 



During the progress of this work or since it was first started, 

 a system of both official and semi-official test has been organized. 



152. The official tests are conducted mostly for seven days 

 although sometimes for 30 or even 60 days. During the time 

 these tests are being conducted the college representative must be 

 present at each milking and both he and the owner of the cows 

 make affidavits concerning the results obtained. 



153. The semi-official tests are carried on for one year and 

 the college representative is responsible only for the figures ob- 

 tained during two days each month, but he checks up the owner's 

 figures for the monthly milk yield "and the average quality of the 

 milk of the monthly tests is taken to represent that of the entire 

 month for the cow tested. The sum of the figures for the produc- 

 tion of milk and butter fat of a cow for 12 consecutive months or 

 for such part thereof during which she is in mill^ gives the semi- 

 official record of the cow for the year." * 



154. "Retests" of cows on official tests are sometimes ordered 

 by the Superintendent of the Advanced Registry of each associa- 

 tion. These "retests" are ordered mostly on the ground of exces- 

 sively high results as reported by the parties testing a cow. ''Re- 

 tests" are ordered by the Holstein-Friesian Association when a 

 cow "has for three consecutive days under test produced an aver- 

 age in excess of the following figures : 



* Woll in Wis. Expt. Station Bulletin 160. 



