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The rotation in Belgium for the richer kinds of light soils, 
and probably similar in texture to our limestone is this : 
1 Flax and carrots. 6 Rye or barley & turnips. 
2 Barley and turnips. 7 Flax and carrots. 
3 Rye and carrots. 8 Oats. 
4 Potatoes. 9 Clover. 
5 Wheat. 
To compare the quantity of produce raised by this rotation 
with the quantity raised on our own soils, suppose each of 
these 1 1 acre-fields equal to 99 acres in the whole. Of car- 
rots, turnips, carrots, potatoes, turnips, and carrots, there 
will be 66 acres grown in the year instead of 25 acres of 
turnips in the 100 acres of limestone soils, and instead of 50 
acres white crops, there will be, of barley, rye, wheat, barley, 
oats, of each 1 1 acres, making 55 acres, and in addition 22 
acres of flax, equal at least to 77 acres of corn. The gain 
on the Flemish system will be 31 acres of green and root 
crops, and 27 acres of corn on the same quantity of land. 
The two following rotations show the quantity of manure 
used, and it is evident that most of it is raised on the farm ; 
first, at Alost, on a stiff loam : — 
1. Potatoes, 20 tons of dung per acre. 
2. Wheat, 3J ditto, and 50 barrels of urine of 36 galls, each. 
3. Flax, 12 ditto, and 50 ditto, with 5 cwt. of rape-cake, 
4. Clover, 20 bushels of wood ashes. 
5. Rye, 8 tons of dung, 50 barrels ditto. 
6. Oats, with 50 barrels of urine. 
9. Buck wheat, no manure. 
In these 100 acres there requires 473 tons of dung, and 1300 
hogsheads of urine. 
On the western side of Woomen and Ypres there are two 
modes of rotation : one a nine years' course, in which wheat 
is but once introduced, and the other a ten years' course, in 
which they grow it a second time, but manure is never 
omitted, except for buck wheat, and occasionally for rye : 
