1909.] PUBLIC DOCUMENT — No. 31. 51 



now on test for yearly records 54 Jerseys, 21 Guernseys and 6 

 Ayrshires. It is believed that the semi-official yearly tests 

 would give a much better indication of the true productive ca- 

 pacity of an animal than tests of shorter duration. 



5. Special Chemical Woek. 



Work in the laboratory has also been carried out on the 

 chemical composition of soils, butter fat and insecticides, and is 

 being continued at the present time. This work forms a part 

 of various investigations which are in progress, and it is not 

 considered necessary to more than mention it in this connec- 

 tion. 



