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valueless or worse by others. A daily dose of 
half a drachm of sulphate of iron and the same 
quantity of powdered ginger in gruel, is one of 
the simplest and least objectionable of the pre- 
scribed aromatic tonics. A table-spoonful of oil 
of turpentine, mixed with two of water, and 
twice administered after an interval of 3 days, is 
said, in the Agricultural Report of Staffordshire, 
to have cured 5 out of 6 rotted sheep. And the 
| following recipe is given by Mr. Clater, and is 
_ said by Henry Cleeve, Esq., to have been used 
with very salutary effects,—6 ounces of powdered 
saltpetre, 4 ounces of fresh powdered ginger, 2 
_ ounces of finely powdered red oxide of iron, 3$ 
ibs. of common salt, and 3 gallons of boiling 
water,—the water to be poured on the other in- 
_ gredients, the mixture stirred, 14 ounces of oil of 
| turpentine to be added when the mixture be- 
| comes lukewarm, the whole to be now put into 
bottles, and three doses, of 4 table-spoonfuls each, 
to be given at intervals of four days to each sheep 
fasting. 
Rotted sheep, however, no matter how slightly 
infected or how promptly cured, always retain 
a taint of the disease, and are peculiarly liable 
to be reinfected with it, and never attain restor- 
| ation to complete vigour and perfect health, and, 
in many instances, fall victims, some 6 or 12 
months after, to an attack of hoove or of intes- 
tinal inflammation. Lambs have occasionally 
been produced by cured ewes,—but they are 
feeble in constitution, and sickly in habit; and 
any sheep who have had rot, no matter how 
seemingly well recovered or how eventually high 
in condition, are readily known by a butcher, 
from the appearance of their liver, to have been 
diseased. Sheep-owners, therefore, will generally 
find it for their interest, not only to cure and 
fatten up infected sheep with all possible promp- 
titude, but to sell them as soon as they are fat- 
tened.—Spooner on the Diseases of Sheep.—Clater’s 
Catile Doctor.—Youatt on Sheep—Mackenzie on 
Sheep —Hogg’s Shephera’s-Guide—Prize Essay by 
HI. Cleeve, Esq., in the Journal of the R. Agricul- 
tural Society of England.—Papers by Mr. Hogg 
and Mr. King in the Quarterly Journal of Agri- 
culture. The Veterinarian. 
ROT (Foor). See Foorror. 
ROT (Scourine). See DysenrEry. 
ROTATION OF CROPS. The order in which 
different crops are made to succeed one another 
in the cultivation of any one field or plot. No 
kind of crop can be grown from year to year on 
the same ground without decreasing in produc- 
tiveness ; and every kind of crop is benefited by 
alternating with some other crop, and especially 
by constituting only one of a series of three or 
four or more. Different kinds are variously help- 
ful to one another according to their classes, 
their habits, their secretions, their mode of cul- 
tivation, and the order of their succession; and 
both individuals and series of them have a great 
variety of adaptations to different soils and situ- 
ROTATION OF CROPS. 
ations. A knowledge of rotations, therefore, is 
most important in the science of agriculture, and 
absolutely essential to its profitable practice. 
Though a farmer should know exactly what 
crops are best suited to his farm, and should 
understand how to manage each individual of 
them mest successfully, yet unless he knew the 
proper order of succession in which to grow 
them, he might seriously injure them all, and 
could not possibly cultivate them to advantage. 
A knowledge of retations is one of the main 
differences between the barbarous husbandry of 
former periods and the improved husbandry of 
the present day. All the agricultural writers of 
Britain and of Continental Kurope, down to the 
latter part of last century, spoke of the most de- 
teriorating courses of cropping in the same terms 
in which they spake of the most ameliorating, 
and betrayed profound ignorance of the power of 
‘certain alternations and certain successions to 
improve the land and augment the aggregate 
produce; and hence, in spite of many valuable 
advances in the arts of tillage, in the construc- 
tion of farm-implements, and in some of the great 
general principles of agricultural science, they 
were utterly unable to indicate to their readers 
any such broad and short path to an overflowing 
granary as lies open to all moderately skilful 
farmers of the present day. Arthur Young was 
one of the earliest agriculturists who tolerably 
understood this great subject; and he pushed 
and propagated it with all his characteristic en- 
thusiasm, and put it on the foreground of a large 
proportion of his writings, and owed to the suc- 
cessful practice and inculcation of it a main part 
of his proud and well-earned fame. Many able 
writers followed him; thousands of the best far- 
mers of England put his instructions to the 
test; the whole body of enlightened cultivators 
throughout all the good districts of Britain 
speedily heard of the doctrine of rotation and 
assented to its importance; and British agricul- 
ture, in consequence, suddenly acquired a greater 
accession to its prosperity than had ever before, 
even at the epoch of the drill husbandry, graced 
and enriched its history. “No one,” remarks 
Philip Pusey, Hsq., “ would now think of growing, 
as formerly, wheat, barley, and oats in succes- 
sion; and though Mr. Hitchins, land-surveyor of 
Brighton, states that, in his recollection, the | 
tenants of a gentleman living in Sussex, when a | 
clause was introduced into their leases prohibit- 
ing them from growing more than two white 
crops in succession, complained that they could 
not hope to defray their rents if fettered by such 
restrictions, few good farmers at present, on light 
soils at least, come even up to those limits, by 
raising even two white crops, as they are called, 
in immediate succession. It is on these light 
lands, indeed, that a due rotation of crops has 
so signally succeeded, that, whereas, they were 
formerly considered of very inferior value, they 
are now more readily occupied than chose heavier 
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