54 



THE CONNECTICUT AGRICULTURAL 



The three samples, 996, 884 and 951, all have an acid reac- 

 tion, doubtless due to bisulphate of soda in the salt-cake which has 

 been added to them. It was to be expected, therefore, that the 

 phosphoric acid in fhem would be more soluble than in pure bone ; 

 45.6 per cent, of their phosphoric acid on the average is soluble, 

 and 54.4 per cent, insoluble. One of them, 884, furnishes more 

 soluble phosphoric acid, pound for pound, than pure bone, but 

 less than half as much insoluble phosphoric acid and less than 

 two-thirds as much nitrogen. 



Solubility of Bojste in Ammonium Citrate. 



Drt Ground Fish. 

 [See next page.] 



A part of the samples analyzed contained acidulated fish scrap 

 making it desirable to determine the amount of soluble and re- 

 verted phosphoric acid. To make a fair comparison of the sev- 

 eral brands, all have been treated in the same way. 



865. Chittenden's Dry Ground Fish was valued at $45.51 per 

 ton in Bulletin No. 73 (p. 13). The higher valuation given to 

 soluble and reverted phosphoric acid raises its valuation to $47.51 

 per ton. 



