COMMERCIAL FERTILIZERS. 



335 



Price per pound, 

 in cents. 



22 

 15 



Nitrogen. In form of finely-ground bones, and bat-guano 



In form of fine-ground horn, wool-dust, etc. . 



In form of coarsely-ground bones .... 



In form of horn-shavings and woollen rags, human excre 

 tions and barnyard-manure, fish-scraps, animal refuse 

 matter from glue factories and tanneries, etc. 

 II. Phosphoric Acid soluble in ivater. As contained in alkaline 

 phosphates and superphosphates .... 



In Peruvian guano and urates .... 



In form of so-called reduced or reverted acid . 



In precipitated bone-phosphate, steamed fine bones, fish- 

 guano, according to size and disintegration, from 



In form of bone-black waste, wood-ash, Caribbean 

 guano, ground-bone ash, coarsely-ground bones, pou- 

 drette, barnyard-manure, etc. ..... 4 



In form of finely-ground South-Carolina and Nevassa 

 phosphates ......... 3 



III. Potassium Oxide. In form of muriate of potash or chlo- 

 ride of potassium ....... 5 



In form of sulphate of potassa in natural and artificial 

 kainits 5 



In form of higher grades of sulphate of potassa . . 7 to 7.5 



18 



12 



12.5 

 9 

 9 



6 to 8 



II. 



