1838] 



FARMERS' REGISTER. 



fi09 



Plate XL— Braining of Bogs. 





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Fig. 1. P/art. — A, Covered drain. B, Orifice of covered drain. C, Open cuts. 



Fig. 2. — Section. A, Porous earth. B, Sand, containing the springs. C, 

 C Outlet of the spring. D Open cut. 



Fig. 3. — B B Drain covered on a level — but in some places below the springs. 



Fig. 5. — A The sough or conduit 6 in. square. B A few small stones above 

 the cover. C Turf inverted 



Fig. 6. — Section representing boring in an open drain, 

 extends. If, in digixiiig the cross-drain, in the ' will be requisite to cut, and bore nnuch deeper, in 

 line laid out by the'spiriT level, for the purpose of order to reach it, the ground being in general 

 cutting oti' the water and leading it to the dis- higher in that part. Besides, the portion of 

 chargmg drain, it should be found, in some piace-i;, porous subsoil, below the drain, may contain a 

 6eZoio tliat of the springs, and where, by boring, quantity of water sufficient to render the ground 

 no water is brousrht up, it will be necessary to wet, and which may pass w?)der the bottom of the 

 makeshort cuts of the same depth, from the cross- trench, between the auger-holes, and break out 

 drain, up to the source of the springs, (as at the , lower down on the declivity. 

 letters A in figure .3 of plate No. XI.); for if the \ Such being a description of the general appear- 

 drain be cut too far below the line of the spring, ' ances that are met with, and to be studied, in con- 

 all possibility of reachin<x it, even with the auger, ; ducting the drainage of spring boge, in their 

 is lost: and if it be above the line of the spring, it ; various siiuaiions, and also the rules for finding 



