14 



Cents per pound 



Potash. 1912. 1913. 



As sulfate free from chlorides... 5.25 5.25 



As muriate (chloride) 4.25 4.25 



As carbonate 8. 8. 



In cottonseed meal, castor pomace, linseed 



meal, etc 5. 5. 



RAW PRODUCTS AND CHEMICALS. 



Fifty-one samples of ground bone, representing 

 Ground Bone, thirty analyses, have been inspected and appear in 

 this bulletin. The average retail cash price for 

 ground bone has been $31.64^ and the average calculated commercial 

 valuation $28.97 per ton. Ground bone has averaged 3.04 per cent 

 nitrogen, 74.68 per cent of which has been found active by the alka- 

 line permanganate method. Four brands were found deficient in 

 nitrogen and nine in phosphoric acid. With three exceptions the 

 deficiency in one element has been offset by an overrun in the other 

 ingredient. Only one brand has shown a commercial shortage of 

 over fifty cents per ton. 



E. D. Chittenden Co., No. 910-1138. Nitrogen found 2.17%, 

 guaranteed 2.47%; phosphoric acid found 20.87%, guaranteed 20.60%. 

 Twenty-four samples of tankage have been in- 

 Ground Tankage, spected. Duplicate samples have been composited 

 so that only seventeen analyses have been made. 

 Three samples were found deficient in phosphoric acid and four in 

 nitrogen. The average retail cash price for tankage has been $32.65, 

 and the average calculated commercial valuation $33.09 per ton. 

 The average total nitrogen in tankage was 6.58 per cent, of which 

 78 per cent has been found active. Nitrogen in fine tankage has cost 

 on the average 18.7 cents; nitrogen in coarse tankage has cost 14.8 

 cents per pound. Only one sample has shown a commercial shortage 

 of fifty cents per ton. 



George E. Marsh Co., No. 587. Nitrogen found 4.87%, guaran- 

 teed 5%; total phosphoric acid found 10.69%, guaranteed 12%. 



Two analyses of dissolved bone have been made 



Dissolved Bone, and found well up to the guarantee. The average 



retail cash price has been $30.50 and the average 



calculated commercial valuation $25.43 per ton. Dissolved bone has 



averaged 3.07 per cent nitrogen, of which 79 per cent was found active. 



Fourteen analyses of dry ground fish were made 



Dry Ground representing thirty-five samples. Four were found 



Fish. deficient in nitrogen and two in phosphoric acid. 



The average retail cash price has been $41.16 and 



the average calculated commercial valuation $36.93 per ton. Dry 



ground fish has averaged 8.07 per cent total nitrogen, about 74 per 



cent of which has been found active. 



