Quarterly Report of the Chemical Committee , December, 1894 . 749 
The report on this sample was : — 
July 25, 1894. 
Moisture ......... 0-60 \ 
Chloride of sodium (common salt) .... 3078 I inn nn 
Other impurities 109 j 
Pure nitrate of soda 6T53J 
An adulterated sample, containing over 30 per cent, of common salt. 
Mr. Graham stated that he had purchased 5 tons of the 
manure, at 10/. per ton, and that on the invoice was gummed a 
label as follows : — 
Analysis of Nit. Soda ; sample taken from bulk in Works, 
Nit. soda 
. 95-28 
Sulphate soda . 
•17 
Chloride sodium 
. 215 
Insoluble matter 
•20 
Moisture . 
. 2 20 
Refraction 
. 435 
N.B. — Minimum percentage guaranteed under the Act of 1893 is 15 per 
cent, nitrogen. 
The amount of nitrogen shown in Dr. Voelcker’s analysis was 
only 10’1 per cent. 
Ultimately Mr. Graham said that he received an allowance of 
10/. on the quantity purchased ; but he declined to give the name of 
the vendors, as he said that the samples were not taken in a proper 
manner. He added, however, that the merchants, when they made 
him the full allowance he claimed, stated that they would get it 
allowed them by the importers of whom they purchased. 
Impure Sulphate of Ammonia. 
3 . Mr. H. J. Overy, of Mascall’s Court, Paddock Wood, Kent, 
sent on July 19 a sample of 1 ton of sulphate of ammonia which 
he had purchased on July 12, at 15/. 5s. per ton delivered (payment 
in October). The order given was for 1 ton sulphate of ammonia 
guaranteed to contain 24 per cent, of ammonia. The invoice, 
however, bore in a footnote the following : — 
Fertilisers sold by us contain (except where stated to the contraiy) 
at least 
Nitrogen ... 1 per cent. 
Dr. Yoelcker’s analysis of the sample showed : — 
July 23, 1894. 
Moisture 475) 
1 Sulphate of ammonia 86 84 h 100 00 
Ash and other impurities ..... 9-01 J 
1 containing nitrogen ...... 1872 
equal to ammonia ...... 22 37 
This is not a pure sample. Genuine sulphate of ammonia should have 
at least 24 per cent, of ammonia. This is adulterated with mineral matter 
(ash). 
The vendors have agreed to deduct 25s. per ton for the deficiency 
of quality. 
VOL. V. T. S.— 20 3 D 
