22a EXPERIMENT STATION. [Jan. 



1918, to July 1, 1919, this amounted to a total of 54,878 tons, 

 divided as follows : — 



Tons. 



Mixed fertilizers, 42,689 



Unmixed materials, 12,189 



Full details regarding the fertilizer inspection work may be 

 found in Bulletin No. 12, Control Series, published in October, 

 1919. 



(f/) Other Activities of the Fertilizer Section. 



In addition to the work incidental to the fertilizer control, a 

 great variety of by-products having more or less value as 

 fertilizers have been analyzed, and the best methods of balanc- 

 ing and utilizing these products have been furnished to the 

 parties interested. 



The usual number of soil samples has also been tested for 

 their lime absorption capacity and organic matter, and advice 

 has been furnished as to the best treatment of the soils v»ith 

 lime and fertilizer for the crops to be grown. 



During November, December, January, February and INIarch 

 much co-operative chemical work was done on the problems of 

 the agricultural department of the experiment station. The 

 above work may be summarized as follows: — 



Dry matter determinations on 15 samples of hard fiint corn. 



Dry matter determinations on 15 samples of cob of hard fiint corn. 



Dry matter determinations on 15 samples of soft flint corn. 



Dry matter determinations on 15 samples of cob of soft fiint corn. 



Dry matter determinations on 15 samples of corn stover. 



Dry matter determinations on 6 samples of carrots. 



Dry matter determinations on 6 samples of carrot tops. 



Dry matter determinations on 4 samples of turnips. 



Weights and dry matter determinations on 290 samples of millet seed. 



Weights and dry matter determinations on 290 samples of millet straw. 



Nitrogen tests on 123 samples of millet seed and straw. 



Potash tests on 62 samples of millet seed and straw. 



Phosphoric acid tests on 12 samples of millet seed and straw. 



In addition to the above tests, 347 different substances have 

 been received and analyzed for farmers and the various de- 

 partments of the experiment station. They may be grouped 

 as follows: — 



