64 Reviews: Whitaker— Geology of London, &c. 
Yankee scoundrel, who imposed on our credulous folks with his 
machine for finding gold where no gold existed, made good his 
retreat, but we trust his ill-gotten British gold has ere now faded into 
greenbacks.’ 
We are tempted to quote some passages respecting Coal; but the 
following will probably be less familiar :—‘ Late in the last century, 
there were still iron-furnaces in the Weald of Kent and Sussex. 
The last furnace is said to have been at Ashburnham; and every here 
and there you may now see heaps of slags, overgrown with grass, 
and the old dams which supplied the water that drove the water- 
wheels that worked the forges of Kent and Sussex. It is said that 
the cannon that were used in the fight with the Spanish Armada 
came from this district; and the rails round St. Paul’s were also 
forged from the Wealden iron.’ 
We must give one parting word of commendation to the admirable 
little Geological Map which forms the frontispiece, and is a perfect 
bijou in its way. The woodcut sections of strata, small as they are, 
answer their purpose well. 
THe GEOLOGY or LONDON AND NEIGHBOURING COUNTRY. 
Memoirs of THE GEOLOGICAL SuRVEY oF GREAT BRITAIN AND OF THE Musnum 
or Practricat GroLtocy. THE GroLoGy or parts oF MipprEsex, Hurts, 
Bucks, Berks, AND Surrey. (SHEET 7 or THE Map or THE GroL. SURVEY 
oF Great Brirary.) By Wioxriam Wurraxer, B.A. (Lond.), F.G.S. Published 
by Order of the Lords Commissioners ef Her Majesty's Treasury. 8vo. London: 
Loneman & Co. 1864. 
HIS Memoir, explanatory of ‘Sheet 7’ of the National Geo- 
logical Map, is a good example of what a painstaking, con- 
scientious, and well-read Geologist of the Survey can do,—of the 
admirable working of the national Institution that comprises the 
Geological Survey, Museum of Practical Geology, and School of 
Mines under an efficient and congenial Directorship,—and of the 
poor printing and paper with which, as usual, the Government 
delights to honour these valuable Memoirs. Although marked ‘7’ 
on the cover, this monograph of local geology is the thirty-sixth 
of the useful, but badly printed, Memoirs* issued with the Sheets 
and Quarter-sheets of our great Geological Map, which, gradually 
spreading its illustrative colour-patches, complex but orderly, from 
Cornwall and Wales, over the Southern, Western, and Midland 
Counties, and among those of North Britain, has elucidated the 
underground structure, with its veins of metals, seams of coal, and 
sheets of well-waters, just as the workman’s polish brings out the 
irregularly regular grain, and the well-ordered though mazy vein- 
ings, of wood and marble. 
Within the limits of ‘Sheet 7,’ including the western part of 
London and the neighbourhoods of Uxbridge, Windsor, Wycombe, 
* If we include the Map-sheets and Memoirs of the Irish Survey, there have 
been upwards of fifty published. 
