A Practical Treatise on Draining Bogs and Swampy Grounds, Illustrated by Figures; with Cursory Remarks Upon the Originality of Mr. Elkington's Mode of Draining: To which are Added, Directions for Making a New Kind of Strong, Cheap, and Durable Fence, for Rich Lands; for Erecting, at Little Expense, Mill-dams, Or Weirs Upon Rivers, that Shall be Alike Firm and Durable; for Effectually Guarding Against Encroachments by the Sea Upon the Land, and for Gradually Raising Drowned Fens, Into Sound Grass-lands. As Also, Disquisitions Concerning the Different Breeds of Sheep, and Other Domestic Animals; Being the Principal Additions that Have Been Made to the Fourth Edition of Essays Relating to Agriculture and Rural Affairs; Published Separately, for the Accommodation of the Purchasers of the Former Editions of this Work