Doimark, Sweden, and Russia. 
211 
the task which Ens:lish agriculture has now undertaken, by the 
accomplishment of which she has almost certain hope of doubling 
the produce of her yet undrained clay soils, but in which, with all 
her great resources of capital and labour, she can make only a 
slow advance. 
But another important step must in Sweden precede the outlay 
of such sums as a general drainage of this kind would require. 
Notwithstanding the exertions now making, and the improvements 
actually in progress, it is said that nearly one-half of the arable 
land of the kingdom is still year by year in naked fallow. A crop 
of corn, and a naked fallow alternately, is the old system of 
Swedish cultivation. Improved rotations have assumed first the 
form of naked fallow, rye, barley, or wheat ; and after this, in 
some cases, three years of grass. The extension of green crop- 
ping, by rescuing a large portion of this naked fallow from unne- 
cessary idleness, will alone add largely to the national produce. A 
better drainage will more naturally follow or flow from the accu- 
mulated capital to which this more productive rotation may be ex- 
pected to give rise. 
Durham, \st Feb., 1843. 
XVIII. — Account of some Experimenis with Guano, and other 
Manures, on Turnips. By John Grey. 
By Mr. Jobling, of Newton Hall, Northumberland. 
Tons. Cwts. 
1. An acre of globe turnips, with 100 lbs. of guano upon 
10 single-horse cart-loads of farm-yard manure, pro- 
duced, when weighed in December . . . 22 1 
2. An acre of the same turnips, and on the same land, with' 
20 single-horse cart-loads of the same manure, pro- 
duced ........ 14 2 
3. An acre of Swedish turnips, with 200 lbs. of guano 
mixed with 4 bushels of sifted house-ashes, produced 14 3^ 
4. An acre, adjoining the above, of the same turnips, with 
25 single-horse cart-loads of farm-yard manure, pro- 
duced 1016 
By the Rev. Archdeacon Scoil, at Whitfield, Northumberland. 
Tons. Cwts. 
5. Four rows of Swedish turnips, with guano alone, at the 
rate of 2 cwt. per acre, produced 17 cwt., or at the 
rate per acre of rather more than . , . .11 0 
6. Four adjoining rows, in every respect equal to the 
above, manured with the ordinary quantity of farm- 
yard dung, produced 29 cwt. 84 stone, or at the rate 
per acre of ....... 19 0 
p2 
