158 EEPORT OF OFFICE OF EXPERIMENT STATIONS. 



conducted with corn, wheat, oats, barley, spelt, emmer, alfalfa, clover, 

 cowpeas, and sweet corn. Hairy vetch was grown to determine the 

 profitable production of seed. The tobacco work conducted in co- 

 operation with this department comprised tests of varieties, im- 

 provement of the crop by seed breeding and selection, fertilizer tests, 

 residual elfects of fertilizers applied for tobacco on the yield and 

 value of other crops in the rotation and tests of other crops as a sub- 

 stitute for tobacco in the rotation folloAved. 



The dairy work consisted of studying the effect of the system of 

 housing of cows on milk production and health, and studies of bovine 

 tuberculosis, the relation of services to abortion, milk substitutes in 

 calf feeding, and means for cheapening the cost of production of 

 dairy jDroducts. Cooperative work with farmers in testing cows was 

 also carried on. Work in animal husbandry was principally confined 

 to swine and the experiments in progress related to the cost of raising 

 pigs to the weaning age, the comparison of dry feed in hoppers with 

 the same feed as slop, the comparison of soft coal, wood charcoal, and 

 tonic mixture as a supplementary feed or corrective, and the deter- 

 mination of a balanced ration as indicated by the hog's appetite. 



Entomological work was largely carried on in cooperation with the 

 State horticultural department. Experiments were made for the con- 

 trol of the San Jose scale, the dipping of nursery trees and seedlings in 

 different insecticides for the control of insect pests was tested, and 

 observations on the agencies and means by whch San Jose scale is 

 distributed were made. Studies were made of the life history and of 

 the methods for controlling the codling moth, the peach-tree borer, the 

 corn-ear worm, and the plum curculio. Attention was also given to 

 the destruction of woolly aphis and green ajohis, and to the relation of 

 the house fly to disease and the means for its suppression. This de- 

 partment devoted much time to the orchard and nursery inspection 

 provided by the State horticultural law. In this work over 700 nests 

 of the brown-tail moth were discovered in imported nursery plants 

 and were destroyed to prevent distribution. . 



The studies relating to plant diseases had reference to their distri- 

 bution and methods of control, particularly the use of Bordeaux 

 mixture and concentrated lime-sulphur as sprays. The effects of 

 treatment for the control of potato scab on germination and the 

 effects of seed of diseased plants on the product were also observed, 

 and a study was made of the diseases of roses in the gTeenhouse. 



The botanist gave attention to the distribution of weeds and 

 grasses, the determination of the variation within the species of 

 some wild plants and whether the variations are hereditary, and to 

 the determination of the purity and vitality of seed. 



In the pathological and chemical studies at the station considerable 

 attention was given to peach yellows, water core in apples, spraying 



