4 AGRICULTURAL ANALYSIS 



Cents per pound 



Nitrogen in ammonia salts 17.5 



" " nitrates 18.5 



Organic nitrogen in dry and fine-ground fish, meat, blood, and 



in high-grade mixed fertilizers 20.5 



" " fine-ground bone and tankage 20.5 



" " " coarse bone and tankage 15.0 



Phosphoric acid soluble in water 5.0 



" " soluble in ammonium citrate 4.5 



" in fine-ground fish bone and tankage 4.0 



'' in coarse fish bone and tankage 3.0 



in cottonseed meal, castor pomace, and wood 



ashes 4.0 



" insoluble (in water and in neutral ammonium 



citrate) in mixed fertilizers 2.0 



Potash as sulfate, free from chlorids 5.0 



" as muriate, (chlorid) 4.25 



' ' as carbonate 8.0 



The above schedule of trade values is adopted by Massachu- 

 setts, Connecticut, Rhode Island, Maine, Vermont, New York 



and New Jersey. It is based on the current market prices in 

 ton lots of the materials. 



The values assigned by the Maryland station differ but slightly 

 from the above. 3 



Cent* per pound 

 In mixed fertilizers: 



For nitrogen as ammonia 20.0 



' ' potash ( K 2 O ) free of chlorids 6.0 



" " (K 2 O) as chlorid or in kainit 5.0 



" phosphoric acid soluble in water and ammonium citrate- 5.0 



' ' insoluble phosphoric acid 2.0 



' ' from rock phosphate i .o 



In dissolved rock: 



For phosphoric acid soluble in water and ammonium citrate. . . 4.5 



In ground bone: 



For nitrogen as ammonia in fine bone 16.0 



" " medium bone 15.0 



in medium bone 14.0 



' ' coarse bone 13.0 



phosphoric acid in fine bone 5.0 



" " medium bone 4.5 



" " medium bone 4.0 



" " coarse bone '. 2.0 



In tankage and ground fish : 



For nitrogen as ammonia 15.0 



" phosphoric acid 3.0 



5 The Maryland Agricultural College Quarterly, 1907, No. 37 : 3. 



