beftowing equal quantities, and at the fame times, oli 

 each divilion. Near the clofe of October, I carefully 

 took up the turnips, and waflied them, leaving up- 

 on them the fibrous roots and leaves. The three 

 vi^hich had grown in the pot of clay weighed ten 

 ounces — the bulbs hot to the tafte, ftringy and tough. 

 The three from the dead red earth v^^eighed only 

 three ounces, and the bulbs vi^ere foft, fpungy and 

 infipid. But the three which had grown in the min- 

 gled red earth and clay weighed twenty-four ounces, 

 and the bulbs were of good texture, and well fla- 

 voured. 



From the fads above ftated, I felt authorized to 

 infer, that all the loft manure, (that is, all the parts 

 not imbibed by the roots of plants, nor remaining in 

 the foil) inftead oi finking below the fphere of vegeta- 

 tion, rofe into the atmofphere : and that " riddle 

 land," (land on which the effeds of manure were not 

 lafting) however highly manured, fo foon loft its fer- 

 tility, not by letting the effence of the manure fink 

 fpeedily through it, but by its incapacity to retain it 

 againji the -power of evaporation. 



My own practice, fince, has been conformed to 

 this conclufion ; diligently ploughing in all manure as 

 foon as fpread ; even fo far as to fpread in the 

 morning no more than could be ploughed in before 

 the hour of dining ; and while the cattle were eat- 

 ing, to fpread only fo much more as they could 

 plough in by night. 



Lands kept conftantly in pafture fhow how little 

 benefit is derived from dung as dropped from the 

 animals depaftured. That of horfes, though in lumps 

 two or three inches thick, very flightly enriches the 

 fpot where it lies ; and that of oxen and cows, lying 

 from one to two inches thick, has no confiderable 

 effect. Whereas dung which is fpread and immedi- 



