THE FA 



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EMS' llEGISTEll. 



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Vol. V. 



MARCH 1, 1838. 



No. 12. 



EDMUND RUFFIN, EDITOR AND PROPRIETOR. 



Johnstone's 'treatise on draining,' &c.j easily discovered, and the frequent burste, whicit 



,^ .. , <. „P XT o \ '" ^i"'*^' assume the appearance of sprin":s, serve 



(Continued from page o26. No. 9.) ^^ j.^^^^^^^ „,^ perplexity. ' ° ' 



The common practice of draininiir o-round in Besides thone ofthe nature, and in the situation 

 this situation, accordini; to the old method, has | now described, there are a variety of other spring 

 been described in the 4ih section of Part I, where bogs, though of less extent, and diversified in their 



it is shown, that in most cases the drains were 

 drawn parallel to one another, /ro« the nutlets to 

 the spring heads; but another method, followed by 

 drainers who were reckoned more expert, was to 

 draw a number of lines parallel to one another, 

 across the declivity, a practice equally expensive. 



appearance, to which the same principle applies, 

 and these re(]uire next to be explained. Bogs, and 

 other wet ground, may be formed, in similar situ- 

 ations, li-om a variety of the same causes, ancJ, 

 consequently, require different treatment — bogs, 

 for example, in a valley betwixt two hills, or 



but in some degree more rational, and therefore' where the ground rises from both sides, 

 more effective than the other. The consequence I In examing these, the first thing is to consider, 

 of this, however, is only to render the ground' whether the springs proceed from one side only, 

 drier while the drains continue to run; but these, from both sides, or lie in the middle, which may 

 not being of sufficient depth, and filled with loose , be ascertained with a spirit level, and by explora- 

 stones to the top, soon choke up, and the ground tory boring. 



becomes as wet, or more so, than before. They If the bog has a descent from the side A A, to' 

 have then the bad effect of altering the surface so the side B B (see plate No. X.) although wet- 

 much from its original appearance, that the true ness appear round all the sides, it is clear that the' 

 Biiuation oJ' the springs cannot afterwards be so water proceeds only from the higher side A Af 



Plate X. — Draining of Spring Bogs. 



■■.UppayLeveUr'^ <>^ „ ^^'^^rhii'T^l^rM 



■.•....I-.— ■--.■-.... •^-- J .A. ^ort«u M^„ .> B ^v-. :...-...-•. .---.v.. 



JJ^-?,, ^^\ ^'inare -■■:-■■■■■ .■.-.•r.. 



. ^ - i^r~~^-^^»\ fd^-A 



"'Sand' or lloc/c 



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Vol. V— 88 



P/an.— AA, SB Springs. Section— A B Springs, C Augar-hok. 



