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terials for increasing the stock of manure, and .to its econo-mical application. A constant attention, to these circumstan-ces is of great importance to husbandmen; and it may be re-marked, that the wheat and.bean crops, produce more abun-dant materials for manure, than any others that are cultivated.If combined with the practice of soiling horses and cattle,and a sedulous attention to the collection of other materials,such as the scourings of ditches, scrapings of roads, and thelike; and if at the same time the soil is of good quality, thefour-course shift may certainly be supported by the ordinaryresources of a farm. The two other rotations of six and eightyears, can only be carried on to advantage, with the assistanceof foreign manure, either town-muck, sea-weed, or the like.
* On thin clays, and inferior loams of a strong description,the mode of cropping above mentioned cannot be carried on,and they must be managed by less exhausting rotations. Forthese soils, the following rotation has been recommended: 1 •Fallow , with 12 or 14 double cart-loads or tons of muckper acre; 2. Wheat; 3. Clover and rye grass; 4. Oats; 5.Drilled beans and pease ; 6. Wheat *. It may be observed,however, that this rotation cannot be profitably conducted onsuch soils, unless manure is afforded a second time in themiddle of the course, as upon the oat-stubble, in preparationfor the crop of beans, otherwise the crops of . the fifth andsixth years will fall off materially. In such cases, therefore,either the fallow must succeed the oats of the fourth year, orthe clover and rye-grass of the third year, must be continuedin pasture for two or three years. All these particulars ofpractice, must depend on soil and other circumstances; andevery husbandman must regidate his conduct by his expe-rience and judgment, combined with the means which hepossesses for amelioration.
All light soils of good staple may occasionally producegood crops of wheat of excellent quality, though they arc not
• Brown’s Treatise on Bural Affairs.