44 



EXPERIMENT STATION. 



[Jan. 



(h) Quality of Other Raw Materials. 

 In the chemicals and raw materials furnishing nitrogen, only 

 1 sample of cotton-seed meal failed to meet the guarantee in 

 this element. Three samples of dissolved bone black and 2 

 samples of acid phosphate failed to meet the guarantee in 

 available phosphoric acid. Among the potash compounds 1 

 sample of high-grade sulfate, 5 of muriate and 1 of carbonate 

 failed to meet the potash guarantee. 



(i) Cost of Plant Food in Raw Materials. 

 The various agricultural chemicals and raw materials, as sold 

 at retail in our local marhets, have furnished nitrogen, phos- 

 phoric acid and potash to the consumer at the following 

 prices : — 



Nitrogen : 



From 

 From 

 From 

 From 

 From 



Available 

 From 

 From 



Potash : — 

 From 

 From 

 From 

 From 

 From 



nitrate of soda, 

 blood, . 



cotton-seed meal, 

 linseed meal, 

 castor pomace, 

 phosphoric acid : — 

 dissolved bone black, . 

 acid phosphate (superphosphate), 



carbonate of potash, . 

 high-grade sulfate of potash, 

 potash-magnesia sulfate, 

 muriate of potash, 

 kainit, ..... 



Cents 

 per Pound. 



18.40 



20.50 



22.05 



26.70 



22.40 



7.80 

 5.90 



8.00 

 5.00 

 5.70 

 4.50 

 5.11 



(;') Miscellaneous Fertilizers, Soils and By-products for Free 



Analysis. 

 During the past year 1G9 samples of fertilizer and by- 

 products used for fertilizer, 33 samples of soil and 11 samples of 

 miscellaneous materials have been analyzed for farmers and 

 others interested in agriculture. Comparative valuations, with 

 advice as to the best method of using these materials, have been 

 furnished the applicant at the time the results of analyses were 

 reported. We have every reason to believe that the samples 



