446 BOARD OF AGRICULTURE. 



The circulation of sap in plants, and their expansive power 

 durino* crrowth. 



To determine the proportions of diiferent elements of 

 nutrition in feeding substances to be used to save needless 

 expense, and to produce the most certain results. 



Experiments on the continuous growth of crops, on the 

 same soil, with chemical fertilizers alone. 



The influence of different kinds of fodder-plants fed to 

 milch cows on the quality and quantity of their milk and 

 butter. 



Contribution to the chemistry of American wild and culti- 

 vated varieties of grape-vines. 



Investigations of dairy products, — oleo-margarine, Jer- 

 sey, and skim-milk cheese. 



Examinations of animal secretions ; variety of urinary 

 calculi, etc. 



Examinations of various vegetables and fruits. 



Examinations of varieties of su<?ar-beets raised throusrh- 

 out the State of New York, Lower Canada, and the Connect- 

 icut River Valley. 



Investigations concerning the saccharine qualities of sev- 

 eral varieties of corn and melons. 



Examinations and trials to test the comparative value of 

 different methods of setting and treatino: milk in the butter 

 dairy. 



Practical trials of new implements, and a great variety of 

 farm machinery. 



Investigations as to the effect of o-irdlino; fruit-trees and 

 plants to hasten the time of ripening, and to improve the 

 quality of the fruits. 



The effect of chemical salts on the carbo-hydrate contents 

 of plants, and the quality of the fruits. 



The construction and repair of common roads. 



The growing of early amber cane, and the manufacture of 

 sugar from its juice. 



The influence of temperature, and the vital functions of 

 plants, and temperature of soils and air, on the changes in 

 form of water in soils, and plants and vapor in air. 



Investigations in relation to the evaporation and percola- 

 tion of water from the soil. 



