446 Bones and Sulphuric Acid as Manures. 
acid, and with a liquid-cart put it over the weakly plants. In 
about four or five weeks after, and to the lime they were taken 
up, these turnips were as good as the others. 
In 1814 all this ground was laid down with oats and grass, and, 
except lot No. 1, where (only) the turnip-tops were ploughed in, 
there was no perceptible difference in the crop of oats or clover, 
and all good. 
No. 3. — On Bones, with Sulphuric Acid and other Manures. 
By R. W. PuRCHAs. 
Lindors Farm, St. Briavels, Gloucestershire. 
This trial of sulphuric acid and bone-dust with other manures 
was made upon a worn-out arable field of a sandy soil, sown 
the beginning of August, 1843, with improved stone-turnips in 
lots of a quarter of an acre. The ground was ridged up at 
24 inches, the seed drilled on the ridge, and hoed out to 8 inches ; 
the turnips were horse-hoed three times, and hand-hoed twice. 
The measure, weight, &c., are all calculaied per Imperial 
standard. One perch of each lot was pulled, topped, and 
weighed on the 8th of January, 1844. 
The expense and produce per acre are as under : — 
No. of 
Manure per Acre. 
Expen 
se 
Produce 
Lot. 
per Acre. 
per Acre. 
£ 
s. 
d. 
Tons. cwt. 
qrs. 
1 
15 yards fat pigs' dung, rotten 
3 
0 
0 
15 
2 
3 
2 
3J bushels bone-dust, and 80 lbs. sulphuric) 
I 
0 
6 
13 
1 
1 
acid (oil of vitriol) . . . ./ 
3 
40 bushels coal ashes, saturated with human 1 
urine in winter 1842-3 . . . ./ 
1 
3 
0 
12 
12 
3 
4 
20 cubic yards road-scrapings, mixed with 280 | 
gallons of human urine, and twice turned \ 
over in 1842 . . . . . ' 
2 
3 
6 
10 
12 
2 
5 
2 cwt. guano, mixed with 12 bushels purel 
2 
1 
0 
10 
5 
3 
cliarcoal-dust . . . . . J 
6 
7 cwt. urate ...... 
2 
1 
6 
9 
11 
2 
7 
20 bushels bones Oialf dust) .... 
2 
14 
0 
9 
1 
8 
6 bushels bone-dust, and 20 bush, charcoal-dust 
1 
13 
0 
8 
17 
6 
9 
4 bushels bone-dust, and 20 bush, charcoal-dust 
1 
14 
0 
8 
17 
0 
10 
16 bushels bones (half dust) .... 
2 
4 
0 
8 
2 
3 
11 
15 yards common straw dung (lialf rotten) . 
1 
10 
0 
6 
13 
1 
12 
No manure ...... 
1 
10 
2 
The turnips on lot No. 2, sown on the 8th of August, came 
into rough leaf before those on any of the other lots. 
It is worthy of remark that Nos. I, 2, and 3, are now (the 8th 
of January) in a very growing state, the tops weighing nearly 5 
tons per acre. 
