294 STATE BOARD OF AGRICULTURE. 



Method as a New Means of Determining the Nature of Acidity and Lime 

 Kequirement of Soils. The titles of the two articles are as follows: (1) 

 Determining the Concentration of the Plant Cell Sap Directly in the 

 Plant Tissue (in tlie -Tonrnal of the American Society of Agronomy), 

 and (2) Studying Biological Activities Directly in the soil by Means of 

 the Freezing Point Method (in Science). 



The investigation on soil temperature is discontinued, at least for the 

 present, and the entire time and all the elTorts are concentrated on the 

 freezing point methods and its relation of subjects." 



As you know, from discussions, and can judge from this report, we 

 are laying a foundation for a strong and broad Department of Soils. I 

 desire to state that we appreciate greatly your support and advice with 

 respect to several problems that have arisen during the past year. 



Respectfully submitted, 



M. M. McCOOL, 



Soil Physicist. 



East Lansing, Mich., June 30, 1916. 



