30a EXPERIMENT STATION. [Jan. 



In addition to the preceding work tests of seven, fourteen 

 and thirty days' duration were conducted for the Holstein- 

 Friesian Association. Owing to the increased difficulty of ob- 

 taining men on short notice, as is often desired in this kind 

 of work, and to the impossibihty of guaranteeing the men 

 permanent employment, the experiment station has been unable 

 to supply men to fill all applications made during the past 

 year. It is hoped that the Holstein-Friesian Association will 

 abandon this type of test and conduct the more valuable 

 yearly work in uniformity with other breeds. 



During the year 29 supervisors were employed at 35 different 

 farms, and 162 seven-day, 71 thirty-day, IG fourteen-day and 

 5 sixty-day tests were made and reported. 



{e) Other Work. 

 This section has co-operated in making analyses of some 

 260 samples used in connection with feeding and digestion 

 experiments, and has analyzed for farmers and other residents 

 of the State, in addition to the work already stated, 498 

 samples of milk, 442 of cream, 7 of vinegar and 231 of feedstuffs. 



NuMEEiCAL Summary of General Laboratory Work, 

 December, 1918, to December, 1919. 



There have been received and analyzed in whole or in part 

 60 samples of water, 498 of milk, 442 of cream, 1 of evaporated 

 milk, 1 of human milk, 231 of feedstuffs, 157 samples of fer- 

 tilizer and fertilizer by-products, ash analyses of 41 cattle 

 , feeds, 7 lime products, 137 soils for lime, a complete analysis 

 of 5 soils, 3 arsenic determinations, 7 samples of vinegar and 

 7 samples of insecticides. 



There were analyzed 616 samples of fertilizers and 1,084 

 samples of feed in connection with the regular inspections. 

 Samples analyzed in connection with experiments in progress by 

 the several departments of the station included 139 samples of 

 milk, 22 of feedstuffs, 49 of faeces, 25 of urine, as well as dry 

 matter determinations on 91 samples of crops, weights and dry 

 matter on 580 samples, nitrogen on 123 samples, and phos- 

 phoric acid on 12 samples. The above totals 4,338 samples, 

 and does not include work done on single research problems, 

 cow-testing work, or that performed under the dairy law. 



