GE

CO

STROUD-ESS

TH

ENGLAND AND WALES.

THE GEOLOGY OF RUTLAND

THE PARTS OF LINCOLN, LEICESTER, NORTHAMPTON,
HUNTINGDON, AND CAMBRIDGE,

AND

INCLUDED IN

SHEET 64 OF THE ONE-INCH MAP OF THE GEOLOGICAL SURVEY;

INTRODUCTORY ESSAY ON THE CLASSIFICATION AND
CORRELATION OF THE JURASSIC ROCKS OF

THE MIDLAND DISTRICT OF ENGLAND.

WITH AN

JOHN W. JUDD, F. G. S.

APPENDIX, WITH TABLES OF FOSSILS, BY R. ETHERIDGE, F.R.S.

BY

PUBLISHED BY ORDER OF THE LORDS COMMISSIONERS OF HER MAJESTY'S TREASURY.

LONDON:

PRINTED FOR HER MAJESTY'S STATIONERY OFFICE.

1875.
[Price 12s. 6d.]

PUBLISHED BY

LONGMANS & Co., PATERNOSTER ROW;

AND BY

EDWARD STANFORD, CHARING CROSS, S.W.

NOTICE.

WHILE the mapping of the district was in progress, the geology of which forms the subject of this Memoir, I had several opportunities of verifying the accuracy and skill with which Mr. Judd traced the geological boundary lines, and the truly scientific manner in which he formed those deductions, the result of which has been expressed in a new classification of some of the formations comprised in the area. I may add that the circumstances which led to the resignation by Mr. Judd of his post on the Geological Survey have always been matter of deep regret to me, for it is not often that men are to be found who possess that rare combination of knowledge on so many special branches of geological inquiry which characterises the author of this memoir. I also feel that we are deeply indebted to Mr. Judd for having so frankly consented, after he had left the Survey, to make his work complete by the gratuitous preparation of a memoir which he was in nowise bound to write. That this important work has been thoroughly well done all geologists will allow. No one but the man who mapped the ground, who examined the fossils in situ, and determined so many of the species, could

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