1889.] 



PUBLIC DOCUMENT — No. 4. 



587 



Peruvian Guano. 



[From P. Williamfl & Co., Taunton, Mass. I. Warranted Peravian Guano, No. 1. 



II. Low-grade Peruvian Guano.] 



Phosphatic Fertilizers. 



[Sent on from Ashby, Mass. I. Acid Phosphate. II. Dissolved Bone-black. 



III. South Carolina Rock Phosphate.] 



Bone-black. 

 [Sent on by F. G. Arnold, Swansea, Mass.] 



Moisture at 100° C, 



Ash 



Phosphoric acid, 



Insoluble matter, 



Per cent. 



5.04 



67.43 



16.56 



.37 



