Quarterly Reports of the Chemical Committee, 1886. 331 
Dr. Voelcker's analysis and report were : — 
" June 1st, 1886. 
Moisture 20-10 
*Organic matter 16 • 20 
Phosphate of lime 51 • 63 
Carbonate of lime, common salt, &c 10 '97 
Sand 1-10 
100-00 
♦ Containing nitrogen 1-21 
£(jual to ammonia 1 ■ 47 
" This is of somewhat poor quality and contains some amount of salt. 
" J. Augustus Voelckek." 
The amount of salt found was 4-20 per cent. 
On Mr. Mackrorj asking the value of the steamed bones, 
Dr. Voelcker wrote : — 
" July 5th, 1886. 
"Deae Sm, — The steamed bones ought to have about 60 per cent, of 
phosphate of lime, and I should be inclined to claim at least 10s. a ton for the 
deficiency. — Yours faithfully, " J. Augustus Voelckeb." 
" J. Mackrory, Esq." 
In reply to later inquiries, Mr. Mackrory, on December 6th, 
informed Dr. Voelcker that the allowance agreed to in regard 
to the bones was 65. per ton. 
3. Mr. VV. Wyley, of 2, School Chambers, Shrewsbury, sent 
on April 3rd, with other samples, one of steamed bones 
guaranteed to contain 56 per cent, phosphate of lime and 1-40 
per cent, ammonia, the price being 4/. 10s. per ton. Dr. 
Voelcker's report was : — 
« AprQ 14th, 1886. 
Water 15-09 
* Organic matter 19-49 
Phosphate of lime 49-73 
Carbonate of lime, common salt, &c 14-70 
Insoluble siliceous matter 0-99 
100-00 
• Containing nitrogen 1-50 
Equal to ammonia 1-82 
" This is not a pure sample, but contains some quantity of salt. Was it 
sold as pure ? " J. Augustus Voelckeb." 
Dr. Voelcker endeavoured to elicit information, but without 
success. 
4. Mr. H. Hedges, of Park View, Whitchurch, Salop, 
sent on April 29th a sample of bones bought at 4Z. 10s. per 
ton, and also on May 14th a second sample, marked "Park 
View." These Dr. Voelcker analysed, giving the following 
reports : — 
