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off potash in a soluble state — slowly and gradually wpuld be 

 the most suitable — for soluble compounds of potash would, 

 in the event of a wet season, be liable to be washed away. 

 Unfortunately, however, we have no such compound of potash 

 at our command, unless it be those which exist in farm-yard 

 manure. We have in this silicates of potash, &c., which, 

 during the decay of the manure in the soil are gradually 

 rendered soluble and become useful to the growth of plants ; 

 since, therefore, it has been found possible to grow crops of 

 turnips with artificial tillages, without the necessity of yard 

 manure at all, there will certainly be in all ordinary farms 

 sufficient to manure the clover, and plenty to spare for the 

 wheat crop as well. This yard manure must be put on in 

 the winter, or early in the spring ; it will then go on decaying 

 and supplying potash during the whole time the clover is 

 growing, and consequently ensure its success. Yard manure 

 from the stable would, undoubtedly, be the best, as it contains 

 and would yield niore potash than the generality of others ; 

 this arises, you are aware, from its being produced from the 

 clover on which the horses feed, every element of which 

 clover, valuable to the growth of a future crop, is returned 

 to the manure in the liquid and solid excretions. And if it 

 were possible to preserve all the liquid and solid excretions 

 of the animals which consume your clover, by applying them 

 to your next crop in winter and the early part of spring, you 

 might certainly ensure a second, as far as practicable. Then 

 let this principle guide you in the management of this pre- 

 carious crop, and I have no doubt you will find less difficulty 

 in raising it than you have hitherto done. There are many 

 gentlemen, however, who will believe that they have not 

 manure to spare for this purpose, and think it more profitably 

 applied in other respects ; for these we must suggest the use 

 of some salt of potash as a top dressing, and for this purpose 

 the rough sulphates — a product in many chemical works — 



