EXPERIMENT STATION REPORTS. 



341 



TABLE III.— LIME REQUIREMENT OF SOILS. 

 INGHAM COUNTY SOILS CaO REQUIREMENT. 



Soil cla.?s. 



Sandy 



Sandy loam . 

 Loam 



Condition. 



Virgin 



Cropped 60 years. 



Virejin 



Cropped 65 yeans. 



Virgin 



Cropped 70 years. 



Jones. 





 580 



774 

 625 



175 

 1,102 



Veitch. 





 



213 

 426 



746 

 1,705 



Freezing 

 point. 



3,703 

 2,380 



7,406 

 5,290 



3,610 

 6,188 



ALLEGAN COUNTY SOILS. 



Medium soil. 

 Fine sand . . . 



Virgin 



Cropped 60 years. 



Virgin 



Cropped 30 years. 



1,705 

 850 



3,640 



2 , 785 

 1,1.34 



4,435 



6,1?8 

 1,8C5 



9,283 

 7,. 540 



ST. JOSEPH COUNTY SOILS. 



Sand 



Fine sand . 

 Loam . . . . 



Virgin 



Cropped SO years. 



Virgin 



Cropped 75 years. 



Virgin 



Cropped 70 years. 



4,126 

 4,U6 



8,251 

 6,704 



10,830 

 6,188 



The report of Dr. G. J. Bouyoucos, researcli associate in Soil Physics 

 is as follows : 



"It is very pleasing to report that the experimental work under the 

 Adams fund is progressing very satisfactorily. The problems under im- 

 mediate investigation are as follows: (1) Measuring the different forms 

 of water in the soil by means of the dilatometer method; and (2) study- 

 ing the rate of reaction between soils and salts, acids and bases and the 

 behavior of the equilibrium by means of the freezing point method. Both 

 of these problems are about completed and the data are being prepared 

 for publication. The results obtained from both problems are exceed- 

 ingly gratifying. They furnish some very important and fundamental 

 information regarding the form in which the moisture exists in the soil 

 and the rate at which equilibrium is attained in the reaction between 

 soils, and salts, acids, and bases. 



The problem for the ensuing fiscal year will consist of different phases 

 of these two main lines of work. They have not been definitely selected, 

 however, and consequently their exact titles cannot be announced at this 

 time. 



During the past fiscal year, two publications Avere issued from the 

 investigations under the Adams fund, namely. Bulletin 31, entitled 

 "Further Studies on the Freezing Point Lowering of the Soils," and a 

 lengthy article published in the Journal of Agricultural Kesearch V. 

 VIII, February, 1917, entitled "Measurement of the Inactive or Unfree 

 Moisture in the soil by means of the dilatometer method." 



Again I desire to express the gratitude ol' the various members of the 



