20. The guarantee should state the ingredients guaranteed, in the following 

 form and order: 



Per cent phos. acid soluble in water. 



" reverted. 

 " " " insoluble. 



" total. 



nitrogen in nitrates. 

 ' ' as ammonia. 



total. 



potash soluble in water. 

 " chlorin. 



H. W. WILEY, 



Chief of Bureau. 

 Approved : 



JAMES WILSON, 



Secretary. 



WASHINGTON, D. C., March %0, 1902. 



O 



