46 a EXPERIMENT STATION. [Jan. 



Complete fertilizers, ......... 453 



Fertilizers furnishing phosphoric acid and potash, .... 18 



Ground bone, tankage and diy ground tish, ..... 79 



Nitrogen eomiiounds, 105 



Potash comiDounds, .......... 43 



Phosphoric acid compounds, ........ 40 



Lime compounds, .......... 43 



781 



Full details regarding the fertilizer inspection work will be 

 found in Bulletin JSTo. 2, control series, published in December, 

 1914. 



(c) Other Activities of the Fertilizer Section. 



Up to Dec. 1, 1914, analyses were made as follows: weights 

 and dry matter determinations on 96 samples of millet for the 

 agricultural department; dry matter determinations in connec- 

 tion with the basic slag and stone meal experiment on 13 samples 

 of oats and 8 samples of potatoes ; 45 dry matter determinations 

 on corn, cob and stover in this experiment. 



In connection with pot experiments to determine the relative 

 nitrogen availability on some suspected samples of commercial 

 fertilizer found in the 1913 fertilizer inspection, 114 dry mat- 

 ter and nitrogen determinations were made. This included 

 weighing the product from each pot. In connection with an- 

 other series of pot experiments with millet to determine the rela- 

 tive nitrogen availability on samples of fertilizer submitted by 

 the Referee on IsTitrogen for the Association of Official x\gricul- 

 tural Chemists, 42 dry matter and nitrogen determinations were 

 made. This work was undertaken in order to compare the 

 actual nitrogen activity of the water insoluble portion of these 

 different nitrogen sources with the laboratory methods (the 

 alkaline and neutral permanganate). 



In addition to the above, 408 different substances have been 

 received and analyzed for farmers, farmers' organizations and 

 the various departments of the experiment station, as follows : — 



Fertilizers and by-products used as fertilizers, .... 226 



Lime products, .......... 30 



Soils for lime requirement test, 100 



