1?<J MARCH. 



ceed on these soils. Black malt-dust, or such as 

 falls through the kiln-plate in drying, is greatly 

 preferred to the white, on account of the seeds of 

 charlock (slnapis arvemis) with which it abounds, 

 being destroyed by the heat. These chalk lands, 

 under their present management, produce such 

 abundance of charlock, that they are generally 

 obliged to mow off the heads and flowers about the 

 middle of June, to prevent its entirely smothering 

 the corn. Charlock-seed so abounds with oil, that 

 it will lay for any length of time in the earth with- 

 out vegetating ; which, however, it never fails to 

 do, when brought near enough to the surface by 

 the plough. Pigeons are supposed to pick up con- 

 siderable quantities of charlock-seed after land has 

 been ploughed. These lands are very subject to be 

 over-run with black -grass (alopecurus agrestisj, 

 which is said to impoverish it much. 



6. Pigeons" dung costs ]s. per bushel heaped, 

 and about a halfpenny per bushel bringing to the 

 land : it is used as malt-dust, and does good in any 

 soil or season. 



7. Soap-boilers' ashes, or wood ashes from which 

 ley has been made, is 'to be had (in small quan- 

 tities only) at 6d. per bushel heaped, and costs 

 about id. carriage: the effect of these on cold 

 sward is very great. 



8. Hogs-hair, \vhich is sometimes to be had in 

 1/Dndon at about Qs. per quarter (the same quantity 

 as furriers' clippings), and carriage 3d., applied in 

 the same manner with clippings, answers welL 



Seal- 



