_Drainage by Machinery_ (Vol. viii., p. 493.).--E. G. R. will perhaps find
what he wants on this subject in Walker's
"Essay on Draining Land by the Steam Engine; showing the number of
Acres that may be drained by each of Six different-sized Engines, with
Prime Cost and Annual Outgoings: London, 1813, 8vo., price 1s. 6d."
He will find a complete history of the drainage of the English fens in Sir
William Dugdale's
"History of Embanking and Draining of divers Fens and Marshes, both in
Foreign Parts and in this Kingdom, and of the Improvement thereby:
adorned with sundry Maps, &c. London, 1662, fol. A New Edition, with
three Indices to the principal Matters, Names, and Places, by Charles
Nelson Cole, Esq.: London, 1772, fol."
Mr. Samuel Wells published, in 1830, in 2 vols. 8vo., a complete history of
the Bedford Level, accompanied by a map; and I may add that the late Mr.
Grainger, C.E., read a series of papers on the draining of the Haarlem Lake
to the Society of Arts in Edinburgh, which, I believe, were never
published, but which may, perhaps, be accessible to E. G. R.