546 



ANNUAL REPORT OF THE 



Off. Doc. 



by him for soluble and reverted phosphoric acid is used. The law of 1879 allow- 

 ed the maker to express his guaranty for nitrogen either in terms of that ele- 

 ment or in terms of the ammonia equivalent thereto; since ammonia is com- 

 posed 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 coiresponding 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 tr 

 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 maj' be presented as follows: 



Summary of Analyses Made This Season. 



c 

 o 



£1 



^3 

 C 

 3 

 o 



The cases of departure of goods from their guaranteed composition observed 

 this season, including only those cases in which it amounted to two-tenths per 

 cent, or more, were as follows: 



Summary of Instances of Deficiency From Guaranty. 



Deficient in four constituents, . 

 Deficient in three constituents, 

 Deficient in two constituents, . 

 Deficient in one constituent, ... 

 Total number of samples in 

 occur 



which deficiencies 



11 

 35 

 59 



105 



o 

 c. 





28 



3 



8 



11 



o 



c 

 o 



c 



o 



