44 EXPEKIMENT STATION. [Ji 



an. 



(/i) Quality of Other Baiu 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 j^hosphate 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. 



(?') Cost of Plant Food in Baw Materials. 

 The various agricultural chemicals and raw materials, as sold 

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

 phoric acid and j^otash to the consumer at the following 

 prices : — 



Nitrogen:— per%nd. 



From nitrate of soda, 18.40 



From blood, 20.50 



From cotton-seed meal, 22.05 



From linseed meal, 26.70 



From castor pomace, ........ 22.40 



Available phosphoric acid : — 



From dissolved bone black, ....... 7.80 



From acid phosphate (superphosphate), .... 5.90 



Potash : — 



From carbonate of potash, 8.00 



From high-grade sulfate of potash, 5.00 



From potash-magnesia sulfate, ...... 5.70 



From muriate of potash, ....... 4.50 



From kainit, .......... 5.11 



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



Analysis. 

 During the past year 169 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 



