EXPERIMENT STATION. 73 



Nitrogen in nitrates has this year, as last, cost less at wholesale 

 than in any other form. In November, 1882, it was quoted at 

 wholesale in New York at $17.60 per 100 pounds. In January it 

 rose to $17.90, fell again in May to $16,30,* declined still further 

 in the Summer, and in November, 1883, stood at $15.20 per 100 

 pounds. 



Last Spring in New York and Philadelphia it was bought of 

 importers at retail in ton lots at from $18.40 to $20.60 per 100 

 pounds, $19.65 on the average. 



The two samples analyzed here from stock of retail dealers in 

 this State furnished nitrogen at $22.61 and $21.67 per 100 pounds. 



Phosphatic materials have not shown striking fluctuations. 

 Tlie wholesale New York quotation for bone black in November, 

 1882, was $24.50 per ton. It remained at that figure till March, 

 declined to $21.50 in June, and has since remained steady at 

 $22.00. 



Charleston rock, crude, in New York, was quoted at $9.00 per 

 ton in January, 1882. It fell to S8.50 in March, and still remains 

 at that figure. 



Ground bone, quoted at $.33.50 in November, 1882, rose in 

 April to $35.00, and declined in June to $32.00, where it still 

 remains. 



Sulphuric acid, 66°, was quoted at \\ cents per pound from 

 November, 1882, to July, 1883, and since then has been quoted at 

 If cents. 



In plain superphosphates, containing over ten per cent, of solu- 

 ble phosphoric acid, the latter has cost* $9.80 per 100 pounds at 

 retail for cash, bought of the manufacturers. No allowance is 

 made for I'everted and insoluble phosphoric acid. Such an allow- 

 ance would make the soluble acid cost still less. 



Only two analyses of plain high grade superphosphates from 

 the open market have been made at this Station during the year. 

 They furnished soluble phosphoric acid at $10.02 to $11.20 per 

 100 pounds. 



Actual 2^otash in high grade muriate cost in New York at 



loholesale in December, 1882, $3.58 per 100 pounds, which is the 



highest figure for the year. In November, 1883, it was quoted at 



$3.20. It has retailed in Connecticut during 1883 for $3.87 to 



> $4.36 per 100 pounds. 



* Average of nine analyses. Bulletin XXVII, N. .1. Exp't Station. 



6 



