1891.] 



PUBLIC DOCUMENT — No. 33. 



267 



5. Analyses, etc. — Continued. 



Tankage. 

 [Sent on by the Bowker Fertilizer Company, Boston, Mass.] 



Moisture at 100° C, . 

 Total phosphoric acid, . 

 Available phosphoric acid, . 

 Insoluble phosphoric acid, . 

 Fat (ether extract), 



Per Cent. 



2.17 



12.79 



6.01 



6.78 



19.19 



Florida Phosphate Rock. 



[I., II. and III. sent on from Boston, Mass.; IV., V. and VI. sent on by 

 Geo. Frost, Mandarin, Fla. ; VII. sent on by M. D. Brooks, Fort Meade, Fla.] 



Phosphatic Fertilizers. 



[I., plain superphosphate, sent on by Anson Wheeler, Concora, Mass. ; II., dis- 

 solved bone-black, sent on by Anson Wheeler, Concord, Mass.; III., dissolved 

 bone-black, sent on from Amherst, Mass. ; IV., acid phosphate, sent on by L. B. 

 Smith, Eastham, Mass. ; V., German phosphatic slag, sent on from Amherst, Mass.] 



