DRAINING OP LAND. 175 



feen from the water that appears on the furface. Their origin 

 is fcarcely perceptible, and they thicken to many yards as 

 they are approached. The ftrata on both fides have a more 

 rapid rife or dip, and are of a clofer and harder texture. If 

 thefe obfervations appear to you worthy of attention, you may 

 make what ufe you think proper of them. I by no means with 

 to detract from Mr. Elkington's merit ; but it is not generally 

 applicable; and in counties where the ftrataare much broken* 

 Mr. Elkington's plan will be found to fail. 

 I am, Dear Sir, 



Your obedient fervant, 



J. C. CURWEN. 

 Feb. 3, 1801, 

 Mr. Charles Taylor. 



P. S. The higheft drain is 120 feet above the level of 

 No. 3. 



A certificate from Mr. William Hoodlefs, farming agent* 

 accompanied this letter, Hating that upwards of fix thoufand 

 yards of drains had been cut, and completely filled, on the 

 farm of John Chriftian Curwen, Efq.; that the firft drains 

 made according to that plan were done three years ago ; and 

 that they ftand completely, and anfwer an admirable purpofe. 



Reference to Fig. 5, Plate XI. of the Manner in zdiich Mr, 

 Cur wen's Drains are made. 



The Ioweft part of the drain below E E is twelve inches 

 wide. 



E E 4 4 are the two fide-ftones of the drain, nearly four 

 inches thick and nine inches high. 



F 9 is the aperture for the water, nine inches high. 



£>, the flag or thin ftone over the aperture, and which covers 

 the fide-ftones of the drain. 



C C, the body of the drain, filled with loofe ftones till 

 within nine inches of the furface. 



B 9, the top of the drain, twenty-two inches wide and 

 nine inches deep, filled with grafs fod and foil. 



i 



N 2 Remarks 



