OP ROTATION OF CROPS. S13 



little to the subject. No manner or execution, he observes, 

 can make up for defect of system. 



On this part of the subject it may be sufficient to add, 

 that almost the same.crops, which, under one system, would 

 be extremely unprofitable to the farmer, and injurious to 

 his land, under another rotation, with an intervening green 

 crop or fallow, might not only be profitable, but might pro- 

 mote its fertility, f 



In considering this important subject, it is proposed 

 shortly to discuss the following particulars : 1. The princi- 

 ples or maxims on which rotations ought to be arranged : 

 2. The various sorts of rotations which have been adopted 

 in Scotland, for various periods of two, three, four, five, or 

 for a longer period of years : 3. Of double rotations, where 

 two systems are in a manner blended together, and carried 

 on at the same lime : And, 4. Any miscellaneous particulars 

 connected with this branch of th.e enquiry. 



1. 



OF THE PRINCIPLES ON WHICH ROTATIONS OUGHT TO BE 

 ARRANGED. 



I have endeavoured, in the preceding section, to point 

 out the various articles which are principally cultivated in. 

 Scotland. These articles must be raised, either constantly 



t Compare, for instance, the old course in the Carse of Gowrie, 1. 

 Wheat ; 2. Barley ; 3. Oats ; 4. Peas and Beans, whan the crops were 

 trifling, with the new system, 1. Fallow ; 2. Wheat ; 3. Beans; 4. Bar- 

 ley ; 5. Grass ; 6. Oats. Under the first course the rent was only from 

 25s. to SOs. per Scotch acre. Under the second it has in many cases risen 

 to L.5 or L.6 per Scotch acre, and upwards. The latter rotation, Mr 

 John Shirreff remarks, would be improved, by having the clover after the 

 wheat, instead of the barley. 



