Qmrterhj Report of the Chemical Committee, June, 1891. 403 
not to be applied, as in the case under notice, to a mixture of 
" steamed and raw bones dissolved with sulphuric acid." 
It is desirable to put purchasers on their guard in respect 
to this. 
8. A large farmer in the "West of England purchased, direct from 
the manufacturers, 35 tons of " Dissolved-bone Manure, ' upon the 
basis of a contract under which the firm in question supplied a 
Farmers' Club in the neighbourhood, and which contract read as 
follows : — 
The dissolved bone to be derived from raw bones ground before being 
dissolved, must contain not less than 24 per cent, of soluble phosphate, 
8 per cent, of insoluble phosphate, and 1 per cent, of ammonia. 
The invoice, however, simply read as foUows : — 
[ 1 per cent, ammonia. 
Dissolved Bone Manure] 24 per cent, soluble phosphates. 
( 8 per cent, insoluble phosphates. 
The following report was sent upon the sample forwarded for 
analysis : — 
February U, 1891. 
Moisture 1.5-57\ 
' Organic matter and water of combination . . ] 5'69 1 
Monobasic phosphate of lime .... 14'o0 
Equal to tribasic phosphate of lime (bone phos-"! ,o^.jq\\. lOQ-OO 
phate) rendered soluble by acid / ^ ' ' f 
Insoluble phosphates 12 '98 1 
Sulphate of lime, alkahne salts, &-c. . . . .35-6o I 
Insoluble sihcious matter ..... 5"61/ 
' Containing nitrogen 0-8.'$ 
Equal to ammonia I'Ol 
Though coming nearly up to the figures of the guarantee, this sample is 
not what you state in your letter it should be, viz., " wholly derived from 
bones." It contains other phosphate than obtained by dissolving pure 
hones. 
A long correspondence ensued, the pui'chaser claiming that he 
had a right to expect " pure dissolved bones," and nothing else, the 
vendors, on the other hand, contending that they had comphed with 
the guarantee and that the interpretation to be put on the clause of 
the contract was, that ground raw bones must be used in the manu- 
facture of the manure, and that only the ammonia need be derived 
from the raw bones. 
They pointed out further that the analysis of a sample made 
from rate bones and acid only would not work out to the figures 
contained in the guarantee, and further, that such a manure could 
not be sold at anything like the price they quoted. 
The vendors in a letter said : — 
The interpretation we put on this clause is that ground raw bones 
must be used in the manufacture of the manure, which has been done ; if, 
