Potassium oxide, 



Phosphoric acid, 



Calcium oxide, 



Insoluble matter, 



Organic and volatile matter, 96.22 — 



SOILS. 



1250-1252. I. Received from Longmeadow, Mass. 

 II. Received from Brockton, Mass. 

 III. Received from Waltham, Mass. 



Moisture at 100° C, 

 Phosphoric acid. 

 Potassium oxide. 

 Nitrogen, 

 Calcium oxide, 



II. 



DISCUSSION OF TRADE VALUES OF FERTILIZING 

 INGREDIENTS IN RAW MATERIALS AND CHEM- 

 ICALS FOR 1903. 



CENTS PER POUND 

 1902 1903 



Nitrogen in ammonia salts, 16.5 17.5 



Nitrogen in nitrates, 15.0 15.0 

 Organic nitrogen in dry and fine ground fish, meat, blood, 



and in high-grade mixed fertilizers, 16.5 17.0 



" " fine bone and tankage, 16.0 16.5 



" " medium bone and tankage, 12.0 12.0 



Phosphoric acid soluble in water, c;.o 4.5 



" " soluble in ammonium citrate (reverted), 4.5 4.0 



" " in fine ground fish, bone and tankage, 4.0 4.0 



