Ao Ahridgement of Elkington s Treat ife on Draining Land, Feb. 



to extra^l more quickly and effect u ally what has before been pent up 

 in the bottoni of the Toil. The obje^l of the augre, which, in many 

 cafes, i; iht Jine qva non (the indifpenfable requifite) of the bufi- 

 r.efs, is fimply to reach or tap the fpring, and to give vent to the 

 water thus pent up, when the depth of the drain docs not reach it ; 

 "^vhere the level of the outlet will not admit of its being cut to 

 that depth, and where the expence of cutting fo deep would be very 

 great, and the execution of it very difficult. 



Page 19. Springs rifmg in a regular line, along the upper fide 

 of a wet fiirface. Make ditch along the lower level of xXxcJirata 

 containing them, another thence to a brook. 



Page 20. Sprin'g-bogs. Drain cut along the level of the lower 

 f;n-ing, and another to a brook. 



Page 23. It is of material confequence to afcertain which of the 

 different outlets, that may appear on the furface, is the main-fpring 

 or throne from which the outlets are fuppiied ; for, by cutting off 

 that, tlie others become dry. If on the bank, or doping furface, 

 from whence they proceed, they are found to break out at diffcreot 

 levels, according to tlie wetnefs of the feafon, and if thofe loweft 

 down continue running, whilfl the above are dry, it is a fare fign 

 that all the different outlets are connected with and proceed from 

 x\\t fame fpring ; and along the line of this under one fhould the 

 <lrain be directed, which, if properly executed, all thofe above will 

 rontnmc dry. This is called the main-fpring, and all the reft, 

 overflowings of it. The reverfe having been formerly ufed, only 

 carried off the overflowings. But it frequently happens that the 

 iippermofl (if the ftrongeft outlets) are the main-fprings, and thofe 

 below only leakages ; therefore caution is necelTary. 



Page 27. Where a drain carried on a level is in fome places 

 below tlie fprings, make little drains up to them. 



Page 28. In a high porous-baak, with fprings down the two 

 fides, drain down the middle from the main-fpring to a brook at 

 the bottom, and bore with augre holes. 



Page 47. In draining a hill, compofed of alternate beds of rock 

 cndclay, make different drains acrofs, at different heights, through 

 the wet ground, to communicate with one from the upper wet 

 q-round. 



Page 71. Drainage of foils, porous above, and retentive below, 

 feems to be done by a large drain, in the moil convenient place, 

 and clearin^^ the furs w^ll, to ferve in place of fmaller ones. 



Page 167. Oil llieep-pallure ; a very fimple method of carrying 

 ofi furface- water, by means of a flrong common plough, may be ef-- 

 fccled in this manner; After turning up furrows through the hol- 

 low parts of the field, where the water is apt to llagnate, let a man 

 with a fpade pair off tlie loofe foil, Irnving the inverted fod, or 



grafly 



