No. 6. 



DEPARTMENT OP' AGRICUl^TLRE. 



911 



for auy coustituent being oousidered to be the amount guaranteed. 

 For compactness and because no essentially important fact is sup 

 pressed thereby', the guaranties for soluble and reverted phosphoric 

 acid have not been given separately, but are combined into a single 

 guaranty for available phosphoric acid; in cases where the mali^er's 

 guaranty does not specifically mention available phosphoric acid, the 

 sum of the lowest figures given by him for soluble and reverted phos- 

 phoric acid is used. The law of 1879 allowed the maker to express 

 his guaranty for nitrogen either in terms of that element or in terms 

 of the ammonia equivalent thereto; since ammonia is composed of 

 three parts of hydrogen and fourteen parts of nitrogen, it is a very 

 simple matter to calculate the amount of one, when the amount of the 

 other is given; the amount of nitrogen multiplied by 1.214 will give 

 the corresponding amount of ammonia, and the amount of ammonia 

 multiplied by 0.824 will give the corresj)onding amount of nitrogen. 

 In these tables, the expression is in terms of nitrogen. 



The law of 1901 abolishes this alternative and requires that the 

 guaranty shall be given in terms of nitrogen. Many manufacturers 

 after complying with the terms of the law, insert additional items 

 in their guaranties, often with the result of misleading or confusing 

 the buyer; the latter will do well to give heed to those items only 

 that are given as the law requires and that are presented in these- 

 tables. 



A summary of the analyses made this season may be presented as 

 follows, excepting the miscellaneous class: 



Summary of Analyses made this Season. 



N'limlier of analyses 



Moisture, per cent 



Phosphnric acid: 



Total, per cent 



Soluble, per cent 



ReverteO. per cent 



Insoluble, per cent., 



Pnta^h, per cent 



Nitrogen, per cent. 



Mechanical analysis of bone: 



Fine, 



Coarse ■ 



f'nmmercial valuation 



Average sellin? price 



Commercial value of samples whose selling price 

 Is ascertained, 



2S9 

 8.93 



10.77 



3 41 

 2.51 

 3.97 

 1.62 



2 

 7.83 



12.96 

 2.65 

 4.4.J 



5.S6 



f,6 

 10.90 



11. SO 

 4.9.5 

 5.37 

 1..57 

 3.09 



1.37 



25.33 



24.10 



25.33 



17.35 

 1B..M0 



17 35 



15.05 

 16.45 



15.05 



59 

 9.06 



15. S8 

 9.43 



4.65 



l..';o 



13.44 

 13.73 



13.49 



c 

 o 



.Q 



•O 

 C 



o 



29 

 6.S9 



22.22 



3.43 



31 



26.87 

 28.52 



26.80 



