Quarlerly Reports of the Chemical Committee, 1889. 775 
Messrs. Walker admitted tbat the bones had been in stock 
since the previous July or August, and that in order to keep 
down vermin and prevent heating they had added a small 
quantity of salt. They offered to make a z'eduction of 10s. 
per ton. 
4. Mr. F. Scott, of Kainham, Kent, sent a sample of sul- 
phate of ammonia, price 13^. per ton, for analysis, on April 22, 
1889, saying in his letter, " It has arrived very hard, and 
requires a lot of breaking, and seems to have been in the bags 
for a considerable time." 
Dr. Voelcker's analytical report is here given : — 
" April 26, 1889. 
Water 4-10 
' Sulphate of ammonia 69'63 
Ash 23-05 
Other impurities 3 22 
100-OU 
' Containing nitrogen 14-77 
Equal to ammonia ...... 17-93 
" An impure sample, containing: 23 per csnt. of ash. Genuine sulphate 
of ammonia should have quite 24 per cent, of ammonia. 
" J. Augustus Voelckee." 
The vendors, on receiving a copy of the analysis, wrote to 
Mr. Scott to express their regret, saying that this parcel had 
come from gasworks in London, and, as it happened, they 
themselves did not have it analysed. The vendors had guaran- 
teed 24 per cent, of ammonia, and allowed 25 per cent, off 
their account. 
5. Mr. James Tomkinson, J.P., of Willington Hall, Tar- 
porley, sent on April 15, 1889, two samples of boiled bones for 
examination as to their purity, and, on hearing that " neither of 
them was free fi'om admixture," applied for a fuller analysis and 
report. The following is the analytical report sent to him in 
reply : — 
" May 7, 1889. ' 
Ko. 1. No. 2. 
Moisture 10-05 20-51 
' Organic matter 17-56 15-59 
Phosphate of lime 51-23 39-63 
Sulphate of lime 1-29 7-64 
Carbonate of lime, &c 16-79 8-84 
Salt 2-04 2-88 
Insoluble silicious matter . , , . 1-04 4-91 
100-00 100-00 
' Containing nitrogen . . . , 1-03 -85 
^ Equal to ammonia t • t • 1'25 1-03 
