1889.] 



PUBLIC DOCUMENT — No. 4. 



579 



Cotton-seed Hull Ashes. 



The samples are of an exceptionally good quality. 



Cotton-seed Hull Ashes. 

 [Sent on bj Bcnj. M. Warner, Hatfield, Mass.] 



Moisture at 100° C, 



Phosphoric acid, . 



Potassium oxide, . 



Calcium oxide, 



Magnesium oxide. 



Insoluble matter (before calcination). 



Insoluble matter (after calcination). 



Per cent. 



6.95 



3.14 

 25.10 

 12.41 



5.84 

 55.48 



9.58 



