EXPERIMENT STATION. 47 



The Tripe refuse contained about 60 per cent, of moisture, and 

 on burning left 9 per cent, of ash, of which 5.5 per cent, was 

 sohable in dilute -acid and consisted chiefly of bone-ash (phosphate 

 of lime). The sample was accordingly nearly free from "earth." 

 Its nitrogen is valued at 15 cents, its phosphoric acid at 5 cents. 

 Its mechanical condition was coarse. 



Damaged Tea. 



705. Sold by H. J. Baker & Bro., New York; sent by Edwin 



Hoyt, New Canaan. 



Analysis. 



Nitrogen, - - 2.04 



.Ash, -- - 11.99 



"Water, - - 54.44 



Potash Salts. 



On pages 48 and 49 are tabulated the analyses and valuations 

 of 9 fertilizers belonging in this class. Five of them are high 

 grade muriates, three double sulphates of potash and magnesia 

 and one kainite. 



798 was stated to have been taken from a bag, also sent, on 

 which, besides one word too indistinct to make out, the following 

 was printed : 



" Actual Sulphate of Potash. Patented by Dr. F. Dupre and 

 C. H. Hake, Germany and America. Manufactured by the Stass- 

 furter Chemische Fabrik, Stassfurt. J. H. Salmon, New York, 

 Agent. 



From the analytical results the following composition is calcu- 

 lated for 775 and 798 : 



ns 798 



Sulphate of potash, 47.82 45.85 



" magnesia, 35.79 39.03 



Soda, chlorine, water, &c., 16.39 15.12 



100.00 100.00 



Sulphate of magnesia is now offered for agricultural use in 

 " Kieserite" which contains about 80 per cent, and is quoted at 

 $4.50 to 15.25 per ton wholesale. Adding to the highest of these 

 figm-es 20 per cent., we have $6.30 as a fair retail price. The 

 samples 775 and 798 which contain 36 to 40 per cent, of sulphate 

 of magnesia have, accordingly, about $3.00 worth of that sub- 



