The average retail cash prices, valuations and percentages of dif- 

 ference of the ground bone, dissolved bone, tankage and dry ground 

 fish are as follows : 



Average retail \'aUiation. Percentage 



cash price. difference. 



Ground bone, 29.46 -7-45 7-32 



Dissolved bone, 25.50 25.03 1.88 



Tankage, 21.67 29.93 27.60* 



Dry ground tish, 39-oo 39-89 2.23* 



In case of the chemicals, two samples of sodium nitrate, one 

 sample of dried blood and five samples of cottonseed meal 

 failed to meet the nitrogen requirement. Two samples of muri- 

 ate of potash and one sample of carbonate of potash failed to meet 

 the potash guarantee. One sample of superphosphate, one sample 

 of dissolved bone black and two samples of dissolved phosphate and 

 potash failed to meet the phosphoric acid guarantee. 



From the data furnished in the tables of analyses of the various 

 agricultural chemicals and raw materials we find the pound of nitro- 

 gen, potash and phosphoric acid have cost the consumer as follows : 



Nitrogen. 



Cents per pound. 



From nitrate of soda, 19} 



From blood, 22 1 



From cottonseed meal, 23^ 



Y\o\\\ linseed meal, 

 From castor pomace. 



-O4 



Potash. 



0; 



From carbonate of potash. 



From sulphate of potash, 



From muriate of potash, 4^^ 



A7'ailablc Phosphoric Acid. 

 Dissolved bone black, 7|- 



Acid phosphate (superphosphate), 5^- 



NoTE. — The pound of total phosphoric acid in "Thomas Slag Phosphate" cost the 

 consumer on the average about ; cents. 



*ln excess of selling price. 



