5S 
Action and Practical Application of Bones 
N.B. — The whole of the bones used in this experiment were 
originally from the same stock. Thus, 
No. 1, fresh bones, crushed^ are the bones in the state they 
left the mill. 
No. 2 are the same boiled, so as to lose their oil ; which 
amounted, as will be seen by reference to the loss of 
weight by the operation, to about 16f per cent. 
No. 3 are the same bones as No. 1, burnt so as to waste all 
the organic parts, both oil and gelatine. The loss by 
burning was about 45 per cent. 
No. 4 are the same bones more highly pulverized, so much 
so indeed as to pass a sieve. 
No. 5 are the same bones merely broken into pieces from 
one-tenth to a quarter of an inch in length. They were 
obtained by separating the fine dust of No. 1 from the 
larger particles. 
Nos. 6, 9, 10, 11, 12, 13, 14, 15, and 16, are the same 
bones as No. 1, in the crushed state, but applied along 
with various other substances. 
No. 7 : these bones are from the same as No. 1, but boiled, 
&c., like No. 2. 
No. 8, same bones as are used on No. 3. 
From the above it will be seen that the bones employed con- 
tain about — 
55 parts inorganic or earthy matter, 
. . (viz. 29^ gelatine ] . , 
45 parts organic | ^.j | or animal matter. 
The sulphuric acid was diluted with twice its weight of water 
before it was mixed with bones ; and similarly the muriatic. 
The dissolved bones were prepared as follows : — After l)eing 
very well pulverized, they were put into separate wooden vessels 
(i. e. the quantity for each plot), containing diluted acid. After 
standing ten days, the proper quantity of water for diffusion was 
added, and they were immediately applied. 
The liquid applications were made by spreading the fluid in the 
bottom of the ridges, and afterwards ploughing the ridges up : so 
that the seed was drilled upon the top and immediately over the 
manure, as is usually practised when farm dung is used. 
The bones, in their ordinary states, were drilled along with the 
seed on the top of the ridges. 
The following prices were paid for the various manures : — 
Crushed fresh bones, 20*. per quarter, or \Qd. per stone. 
Sulphuric acid, \{d. per lb. 
Muriatic acid, \^d. per lb. 
