58-2 
Superphosphate and Guano. 
DcicriiiUon of Manure. 
Produce 
of 
Roots 
per Acre. 
Produce 
of 
Leaves 
per Acre. 
Cost of 
Manure 
per Acre, 
including 
in 
each case 
10 Loads 
of Dung, 
at 2s. 6d. 
Uemarks- 
31 c»t. .African guano, 
5 bush, turf ashe^, sown 
togctlier by hand after 
once hiirrowing; then 
twice harvoweil and 
rolled before the drill. 
201) bushels of superior 
dung. 
31 cwt. African guano. 
23 bush, turf ashes, drill- 
ed together. Dung as 
above. 
3i cwt. Peruvian guano, 
25 bush, turf ashes, drill 
ed together. Dung as 
above. 
8 bush, calcined bones, 
168 ll>s. sulphuric acid, 
1 2 gallons water. 20 bus. 
turf ashes, drilled to- 
gether. Dung as above. 
8 bush, fine bones, un 
burnt, IG:^ lbs. sulpluiric 
acid, 12 gallons water, 
20 bush, turf ashes, 
drilled together. Dung 
as above. 
6 bush, calcined bones, 
168 lbs. sulphuric acid, 
10 galls, water, 22 bush, 
turf ashes, drilled toge- 
ther. Dung as above. 
rons.cwt. lb 
9 12 24 
Tods. cwt. lb. 
0 16 IS 
£. s. 
2 15 
Ifi bush, bones*— 10 bnsh. 
half-inch., fido.finedusl 
— 20 bush, ashes, drilled 
together. Dung as 
above. 
30 bush, turf ashes, drill- 
ed. Dung as above. 
Dung as above only. 
17 10 0 
IT 15 81 
0 17 88 
0 M 68 
1 0 32 
0 19 56 
1 1 6") 
3 10 8 
32 ; 0 U 32 3 10 4 
Before the 9 separate acres were 
set out, 10 loads per acre of ex- 
cellent dung had been applied 
to tlie whole in favourable 
weather. — The 9 acres were 
drilled with the green-topped 
swede, on the 5th June, 1845, 
and the crop was weighed on 
the 2Snd of Dec. 
More ashes were drilled on No. 2 
than applied to No 1 by hand. 
The advantage of the extra 20 
bushels of ashes can be esti- 
mated by a comparison between 
Nos. 8 and 9. 
On allowing for this. No. 2 will 
still prove to be nearly 2 tons 
belter than No.,1. 
The Peruvian Guano, No. 3, was 
obviously much adulterated, 
\\ hich will account in a great 
measure for the superior elTect 
of the African guano, No. 2. 
The bones, acid, and water in 
Nos. 4 and 5 were mixed in a 
water-tight pit, and on the se- 
ciind day put witli the ashes and 
turned up together. In three 
days it was dry enough to si t 
and drill. 
The process of preparing No. 0 
w as mucli more convenient and 
simple. The 22 bush, of ashes 
were first shaped in the form of 
a basin or mortar-bed, abo\U 6 
inches thick at the bottom, and 
pressed firmly together; the 
bones were tlien placed in the 
basin and the acid poured on 
them, the water Ibllowing. 
Thinking that a waste of neid 
might ensue, I used the same 
quantity for 6 bush, of bones 
as for 8 bush- in Nos. 4 and 5. 
Tlie acid and water penetrated 
the ashes very slightly till the 
mass was turned up together. 
'I'he solution of the boues^was 
complete. The result of this 
experiment is very striking. 
Nos. 4 and 6 were ready to hoe 
fi^ e days sooner than Nos. 2 und 
5 ; nl)out eight days before Nos. 
1.3, and 8, and twelve days be- 
fore Nos. 7 au<l9. No<. 4 end 
B have maintained the lead 
throughout, Nos. 2 and 5 iu- 
ereasing in a greater ratio. 
• The bonei were well fermented with 24 gallons of urine. 
