A DESCRIPTIVE PETROGRAPHY OF THE IGNEOUS ROCKS

Transcription

1 FROM MURBY'S nsr ReCeNt PUB, CATZONS A FRENCH.ENGLISH VOCABULARY IN GEOLOGY AND PHYSICAL GEOGRAPHY. By G. MAcDoNALD D~,vxEs, M.Sc., F.G.S. 6s. net. A Glossary for English readers of French works in geology, physical geography, mineralogy, petrology, pal~vontology, stratigraphy and mtmng. UNDERGROUND SOUTH-EASTERN ENGLAND. A Three Dimensional Map of the Weald, London Basin and Chiltern Hills. By L. J. CHUnB, M.Sc., F.G.S. In coloured sheets, to be made up. 12s. 6d. net. Binding Equipment, 2s. The Map can now be supplied made up at 35s. net. NEXRL Y REXD Y EARTH-LORE : Geology without Jargon. By Professor S.J. SHAND, D.Se., F.G.S. Illustrated. Ready about March ts. 5s. net. In a style as interesting as that of a good storyteller, the author discusses not only some of the older problems of geology but some of the newest as well. Even a professed geologist after reading some of the chapters may be surprised to find himself looking at old problems from a new angle. IN THE PRESS ON THE MINERALOGY OF SEDIMENTARY ROCKS. A series of Essays and a Bibliography. By Professor P. G. H. Boswell, O.B.E., D.Sc., F.R.S., M.I.M.M., A.R.C.S., D.I.C. A HISTORY OF THE STUDY OF ORE DEPOSITS. By THOMAS CROOK, A.R.C.Sc.I., F.G.S., M.I.M.M. Principal of the Mineral Resources Department, Imperial Institute, London. THOMAS MURBY & CO., 1 Fleet Lane, Ludgate Circus, London, E.C.4 i THE FORM AND PROPERTIES OF CRYSTALS AN INTRODUCTION TO THE STUDY OF MINERALS AND THE USE OF THE PETROLOGICAL MICROSCOPE By A. B. DALE With x22 text-figures, x other illustration, and a table of crystals. Crown 8vo. 6s. net In helping students to master the principles underlying the examination, measurement, and identification of minerals, much difisculty has been experienced in finding a textbook simple enough for those with only an elementary knowledge ot physms and mathematics, comprehensive enough to give them most of what they need in a volume of moderate size, and at the same time inexpensive enough to suit their purses. This textbook represents au effort to supply their needs. Although the book is demgned primarily for students of petrology, it is hoped that it may also be found useful to students of chemistry and others to whom crystals are becoming more and more matters of interest and importance. A DESCRIPTIVE PETROGRAPHY OF THE IGNEOUS ROCKS Volume II. THE QUARTZ-BEARING ROCKS By ALBERT JOHANNSEN With x2o text-figures and 209 tables. Royal 8vo. 3os. net. The University of Chicago Press. This volume defines the rock families and traces the history of the terms. Previously Published. Volume I, Introduction, Textures, Classifications, and Glossary. With r46 illustrations, ess. net CAMBRIDGE UNIVERSITY PRESS

2 CONTENTS 1. S.g. SHAND. The Lavas ~)f Mauritius.. PAGE 1 2. F.B.A. WELCH. The Geological Structure of the Eastern Mendips. (Plates I-IV) W.S. BOULTON. The Rocks between the Carboniferous and Trias in the Birmingham District. (Plates V & VI). 53 The Editor of the Quarterly Journal is directed to make it known to the Public that the Authors alone are responsible for the facts and opinions contained in their respective papers, and for the correctness of their references. Authors desirous of communicating papers to the Society will be supplied, on application to the Assistant Secretary, with a copy of ' Instructions to Authors', issued by the Council on the recommendation of the Publication Committee. The Society's Library is open every week-day from 10 o'clock until 5, except on Saturdays, when the hours are from 10 o'clock until 1. The GEOLOGICAL SOCIETY wishes to announce that a limited amount of space in future editions o this Journal will be available or advertisements. All communications respecting advertising should be addressed to the Official Agents: Russell's Advertising Service 25, PORTLAND STREET SOUTHAMPTON I~INTED IN GREAT BRITAIN BY I~IOHARD ~LAY & ~NS, T~I~D., BUNGAY, SUFFOLK,

3 T his is the iightest, cheapest and most compact boring rig for oneday. A core sample of the We also manufacture ROCK DRILLS (HAND & CRADLE) for every duty, DRILL SHARPENERS, etc. CLIMAX ROOK DRILL & ENGINEERING WORKS Ltd. 4 Broad St. Place, London, E.0.2 Works : Carn Brea, Cornwall ~ 0~ L~. OvER TAS/Cz.7o

4 JJ I T his is the lightest, cheapest and most compact boring rig for one day. A core sample of the We also manufacture ROCK DRILLS (HAND & CRADLE) for every duty, DRILL SHARPENERS, etc, ~o~" A~ ~ ^ CLIMAX ROOK DRILL & ~ ENGINEERING WORKS Ltd. ~1,~. 4 Broad St. Place, London, E.O.2 1 Works : Cam Brea, Cornwall ~L ~1~O~ TAS/Cx.To

5 ~'~,' " ~ " -- u ~' is is the lightest, cheapest and ost compact boring rig for oneday. A core sample of the We also manufactupm ROCK DRILLS (HAND &. CRADLE) for every duty, DRILL SHARPENERS, etc. CLIMAX ROOK DRILL & ENGINEERING WORKS Ltd. 4 Broad St. Place, London, E.0.2 Works :Carn Brea, Cornwall.,.-~ i -A 'O ~" TAS/Cx.7o