224 
Quarterly Report of the Chemicol Committee. 
The first and second samples are adulterated, for both contain 
as much as 38 per cent, of sand, and about 10 per cent, of 
carbonate of lime (chalk) ; and the one yields only f>\ per cent, 
of ammonia, and the other 6 per cent, of ammonia, in round 
numbers. 
The composition of these two samples is pretty much the 
same, the second being slightly better than the first, although it 
was sold at 25s. less money per ton than No. 1. The third 
sample is genuine guano, but of an inferior character, inasmuch 
as it contained 15 per cent, of insoluble matter, and yielded only 
11^ per cent, of ammonia. Such guano is not worth 16Z. a ton,- 
and the adulterated samples. No. 1 and No. 2, sold respec- 
tively at 14/. a ton and 12/. 15a., were not worth more than 8/. 
a ton. 
Dr. Voelcker wrote for the names of the sellers of these guanos, 
but obtained no reply in answer to his inquiries. 
2. A sample of artificial manure, sent by Mr. J. Reeve, 
Snetterton Hall, Thetford, on analysis was found to have the 
following composition : — 
Moisture 12-53 
♦Organic matter 25-06 
Oxide of iron and alumina 10-35 
Phospliate of lime 1-70 
Carbonate and sulphate of lime 16-74 
Magnesia and alkaline, salts 2-01 
Insoluble siliceous matter (sand) 30-61 
100-00 
• Conlaiuiug nitrogen 87 
Equal to ammonia 1-05 
This artificial manure, it will be seen, contained only 1| per 
cent, of phosphate of lime, and yielded only 1 per cent, of 
ammonia. It contained per cent, of sand, and a large pro- 
portion of oxide of iron, alumina, carbonate of lime, and similar 
worthless materials. 
No information could be obtained respecting the mmes of 
the vendors, or the price of the manure, which hardly deserves 
the name. 
3, Mr. Edward Taylor, VVhitton, Leintwardine, sent a sample 
of manure, which he purchased as genuine dissolved bones. 
This manure, on examination, was found to contain no more 
than lU per cent, of green bone at the most, and, consecjuently, 
was not genuine dissolved bones. The name of the 'dealer of 
these so-called dissolved bones could not be obtained. 
4. Dr. Voelck<>r had j)reviously reported on the composition of 
