POTASH COMPOUNDS. 

 2017-2019. I. High grade sulphate of potash, received from 

 New Lenox, Mass. 

 n. Potash magnesia sulphate, received from Am- 

 herst, Mass. 

 in. Carbonate of potash and magnesia, received from 

 Amherst, Mass. 



Moisture at ioo°C., 

 Potassium oxide. 

 Magnesium oxide, 

 Sulphuric acid, 



PHOSPHORIC ACID COMPOUNDS. 



2020-2023. I- Dissolved bone-black, received from New Lenox, 

 Mass. 

 II and III. Acid phosphate, received from New Lenox, 

 Mass. 

 IV. Burned bone, received from Greenfield, Mass. 



PER CENT. 



I. 

 Moisture at ioo°C., 5.60 



Total phosphoric acid, 14.82 

 Soluble phosphoric acid, 8.70 

 Reverted phosphoric acid, 4.64 

 Insoluble phosphoric acid, 1.48 



2024-2026. I. Phosphatic slag, received from Holyoke, Mass. 



II. Phosphatic slag, received from Waltham, Mass. 

 III. Dissolved bone, received from New Lenox, Mass. 



PER CENT. 



I. II. 



Moisture at ioo°C., 1.04 .12 



Total phosphoric acid, 18.40 17.10 



Soluble phosphoric acid, * — 



Reverted phosphoric acid, * 10.12 



Insoluble phosphoric acid, * 6.98 



Nitrogen, — — 



* Not determined. 



