( XXXI ) 
GUIDE TO THE PURCHASE OF ARTIFICIAL MANURES 
AND FEEDING STUFFS. 
Feeding Cakes. 
1. Linseed-cahe should be purchased as " Pure/' and the insertion of this 
word on the invoice should be insisted upon. The use of such words as 
" Best," " Genuine," &c., should be objected to by the purchaser. 
2. Eape-cake for feeding purposes should be guaranteed " Pure," and 
purchased by sample. 
3. Decorticated Cotton-cake should be guaranteed " Pure," and purchased 
by sample. 
4. Undecorticated Cotton-cake should be guaranteed "Pure," and 
purchased by sample. 
N.B. — All feeding cakes should be purchased in good condition, and the 
guarantee of the vendor should be immediately checked by a fair sample 
(taken out of the middle of the cake) being at once sent for examination to a 
competent analytical chemist. The remainder of the cake from which the 
sample sent for examination had been taken should be sealed up in the presence 
of a witness, and retained by the purchaser for reference in case of dispute. 
Artificial Manures. 
1. Raw or Oreen Bones or Bone-dust should be purchased as "Pure" 
Raw Bones guaranteed to contain from 45 to 48 per cent, of tribasic phos- 
phate of lime, and to yield not less than 4 per cent, of ammonia. 
2. Boiled Bones should be purchased as " Pure " Boiled Bones guaranteed 
to contain from 55 to 60 per cent, of tribasic phosphate of lime, and to yield 
not less than 1 per cent, of ammonia. 
3. Dissolved Bones are made of various qualities, and are sold at various 
prices per ton ; therefore the quality should be guaranteed under the heads 
of soluble phosphate of lime, insoluble phosphate of lime, and nitrogen or its 
equivalent as ammonia. The purchaser should also stipulate for an allow- 
ance for each unit per cent, which the dissolved bones should be found on 
analysis to contain less than the guaranteed percentages of the three sub- 
stances already mentioned. 
4. Mineral Superphosphates should be guaranteed to be delivered in a 
sufficiently dry and powdery condition, and to contain a certain percentage of 
soluble phosphate of lime, at a certain price per unit per cent., no value to be 
attached to insoluble phosphates. 
5. Compound Artificial Manures should be purchased in the same manner 
and with the same guarantees as Dissolved Bones. 
6. Nitrate of Soda should be guaranteed by the vendor to contain 95 
per cent, of pure nitrate. 
7. Sulphate of Ammonia should be guaranteed by the vendor to contain 
not less than 24 per cent, of ammonia. 
8. Peruvian Guano should be sold under that name, and guaranteed to be 
in a dry and friable condition, and to contain a certain percentage of ammonia. 
N.B. — Artificial manures should be guaranteed to be delivered in a suffi- 
ciently dry and powdery condition to admit of distribution by the drill. A 
sample for analysis should be taken, not later than three days after delivery, 
by emptying several bags, mixing the contents together, and filling two tins 
holding about half a pound each, in the presence of a -witness. Both the tins 
should be sealed, one kept by the purchaser for reference in case of dispute, 
and the other forwarded to a competent analytical chemist for examination. 
