Quarterly Reports of the Chemical Committee^ 1881. 377 
Moisture 15 • 50 
*Organic matter and salts of ammonia .. .. 24 '80 
Phosphate of lime 3'69 
Oxide of iron and alumina 7 '31 
Sulphate of lime 20-79 
Alkaline salts and magnesia 2 'ST 
Insoluble siliceous matter (sand) 25' 04 
100-00 
* Containing nitrogen 1 ■ 56 
Equal to ammonia 1 • 81) 
This manure, it will be seen, is poor in phosphate of lime 
and in ammonia, and scarcely worth 2/. 2s. per ton, delivered 
on the farm. 
3. Mr. John N. Waite, Bramerton, Norwich, sent me a 
sample of turnip-manure, which, on analysis, was found to have 
the following composition : — 
Moisture 18-01 
*Organic matter 1'20 
Phosphate of lime 13-76 
Sulphate of lime 11-32 
Oxide of iron and alumina, ttc 18-81 
Insoluble siliceous matter (sand) 24-90 
100-00 
* Containing nitrogen 0-79 
Equal to ammonia 0 ■ 9G 
This manure, it will be noticed, contained a large proportion 
of sand and useless earthy matter, only 13f per cent, of phos- 
phate of lime, and not quite 1 per cent, of ammonia. In Dr. 
Voelcker's opinion it is hardly worth 21. lOs. per ton. It was 
sold to I\Ir. Waite at 6Z. lOs. per ton, cash, without guarantee. 
Mr. Waite bought 2 tons, and paid cash (13/.) to the manu- 
facturer, who on being asked for the usual discount of 10 per 
cent, for cash payment, informed Mr. Waite that he could not 
afford to give discount, as his manure was so well made that 
he ought to sell it at a higher price. 
4. The following is the composition of a sample of adulterated 
guano sent to Dr. Voelcker by Mr. James Harris, Felthamstead, 
Coventry : — 
Manure 5-75 
*Or(:;anic matter, and salts of ammonia .. .. 18-21 
Phosphate of lime 10-35 
Carbonate of lime 31-48 
Alkaline salts and magnesia 16*91 
Insoluble siliceous matter 17-30 
100-00 
* Containing nitrogen 0-84 
Equal to ammonia 1-02 
