NEW YORK. 205 



The department of entomology conducted i5pecial studies of the 

 snow-white linden-moth, the Mallophaga infesting domestic fowls, 

 the cabbage aphis, and the larch case bearer, apple maggot, and other 

 insects. Extensive experiments were also made on the treatment of 

 onion thrips and the use of lime-sulphur washes for scale insects. 



The work of the dairy department consisted of studies of moisture 

 in butter, of the factors affecting the efficiency of cream separators, 

 and of the factors affecting the accuracy of the Babcock test, and 

 experiments in manufacturing Camembert cheese. Tests of 34 herds 

 of cows were made and a bulletin giving the results of the second 

 year's work is in course of preparation. 



The experimental work of the department of animal husbandry 

 had reference mainly to the relation of food standards to milk pro- 

 duction. The results of experiments carried on indicate that mangels 

 raised at a cost of $4 per ton and judiciously used to replace one-half 

 of the grain ordinarily fed are profitable for milk production. A 

 comparison of different substitutes for skim milk in raising calves 

 showed that skim milk was the best substitute for whole milk and 

 also that good calves can be raised without skim milk or milk of any 

 kind after the first 30 days. Dried skim-milk powder proved the 

 best substitute for skim milk at an economical cost. 



The department of j^oultry husbandry compared the results of free 

 range versus bare yard and close confinement on laying and breeding 

 stock and the accumulative effect of natural versus artificial incu- 

 bation on the health and productivity of fowls, and studied the im- 

 portance of constitutional vigor in selecting fowls, the relation of 

 inheritance to the function of egg production, age as a factor in 

 breeding, the feeding of color pigments in nutrition experiments, 

 seven methods of feeding chickens to broiler age, and crossbreeding 

 White Leghorns and Ban-ed Eocks in comparison with pure breeds. 



The department of agricultural chemistry made considerable prog- 

 ress in the study of the lime requirements of soils. 



The extension work conducted by the college of agriculture in- 

 cluded a large number of cooperative experiments with farmers on 

 the use of fertilizers for certain crops, corn and potato selection tests, 

 comparative cost of producing dry matter in root and silage crops, 

 etc. One feature of the extension work is the agricultural survey, 

 carried on by counties, and the soil survey of the State, conducted in 

 cooperation with the Bureau of Soils of this department. The soil 

 survey as at present organized is able to cover only about one county 

 a year. Wherever experiments are conducted field meetings are ar- 

 ranged on the experimental plats for the purpose of field demonstra- 

 tions. Several farm trains were run during the year. For the fiscal 

 year 1910-11 the State appropriated $12,000 for extension work, 

 which is an increase of $2,000 over the year before. 



