ANNUAL REPORT OF THE CONSULTING CHEMIST FOR 1915. 50I 



Peruvian Guano. — Two samples of this were sent, the analyses 

 being as follows : — 





Per cent. 



Per cent. 



Moisture ...... 



20-46 



18-32 



♦Organic matter and salts of ammonia . 



3651 



34-37 



■[Phosphoric acid ..... 







Lime ....... 



10-98 



11 '43 



Alkalies, &c. ..... 



951 



8-36 



Insoluble siliceous matter 



8-8i 



1327 





IOOOO 



IOOOO 



* Equal to phosphate of lime 



30-00 



31-13 



f Containing nitrogen .... 



9-76 



9-01 



Equal to ammonia. 



1185 



1094 



Both were of excellent quality. Peruvian guano, it may be 

 pointed out, generally contains about 2 per cent, of potash. 



Shoddy, Wool Waste, &c. — The following are analyses of materials 

 sent : — 





Wool Waste. 



Rabbit 

 Flick. 



Wool 

 Combines. 





Per cent. 



Per cent. 



Per cent. 



Per cent. 



Moisture .... 



7-54 



961 



30-29 



831 



♦Organic matter 



Oxide of iron, alumina, &c. 



72-91 



67-10 



65-22 



65-97 



6-oi 



8-13 



3-21 



2-64 



Sand ..... 



13-54 



15-16 



1-28 



23-08 





IOO-OO 



IOOOO 



IOO-OO 



IOOOO 



♦ Containing nitrogen 



337 



7-41 



IO-2I 



4-44 



Equal to ammonia . 



4-09 



8-99 



I2-40 



5-39 



Lime. — One sample of this material, intended for liming land, 

 was submitted. On analysis it gave the following results : — 



Per centi 



Oxide of iron and alumina . . 2-59 

 Lime (CaO) .... 45-35 

 Magnesia . . . . . -75 

 Silica ..... 9-95 

 Water, carbonic acid, &c. . . 41-36 



ioo-oo 



This sample was very damp and was much hydrated and carbo- 

 nated, probably through exposure, so that the amount of caustic lime 

 was not much more than half what it would be in a good sample of 

 burnt lime. 



Water. — One sample of water was sent for information as regards 

 its suitability for horticultural purposes. It came from near Evesham, 

 in Worcestershire. It was found to contain no less than 207-76 

 grains per gallon of total solid matters, and, inasmuch as these con- 

 sisted very largely of sulphate of lime, the water was an extremely 

 hard one and unsuitable alike for domestic and for horticultural 

 purposes. 



Soils. — (a) Soil for a kitchen-garden. 



A sample of soil was sent me to know whether it was suitable 

 for kitchen-garden purposes, and also for guidance as to how potash 



