Now ready, price 5*., 
THE EOCKS OF WOECESTEESIIIEE ; their Mineral 
Charactci-s and Fossil Contents. With Map and View of Rocks. By 
GEORGE E. ROHICRTS, Member of the Worcestershire and Malvern Natu- 
raliste' Field Clubs, and of the Loudon Geologists' Association. 
" An uncouth chronicle of glorious years." — Wokuswohth. 
London : J. Masteiis, Aldersgate Street and New Bond Street. 
In Three Volumes, Royiil Quarto, £8 8s., 
THE GEOLOGY OF PENNSYLVANIA. A Government 
Survey : with a General View of the Geology of the United States, 
Essays on the Coal Formation and its Fossils, and a Description of the Coal- 
Fields of North America and Great Britain. By Professor HENRY DARWIN 
ROGERS, F.R.S., F.G.S., Profes-or of Natui-al History in the University of 
Glasgow. With Seven large Maps, and numerous Illustrations engraved on 
Copper and on Wood. 
William Blackwood & Sons, Edinburgh and London. 
A COLLECTION OF FOSSILS, named and arranged from the 
- English, French, and Italian Tertiary Deposits ; also from the English Cre- 
taceous, Oolitic, Coal and Mountain Limestone Formations. 
Many of the Tertiary Shells are rare, contained in a large painted Deal Cabinet, 
containing 10 drawers, with lifting trays. 
May be seen on application at No. 15, Southampton Buildings, Chancery 
Lane, W.C. 
Now ready, 
SIE EODERICK MUECHISON'S NEW GEOLOGICAL 
SKETCH MAP OF SCOTLAND. 
London: "GEOLOGIST" Office, 156, Strand. 
In a few days, 
DAVIDSON'S MONOGEAPH OF SCOTTISH 
CARBONIFEROUS BRACHIOPODA. 
London: "GEOLOGIST" Office, 156, Strand. 
For further particulars of these and other New Publications, see Advertisement, 
page 1. 
GEOLOGICAL SOCIETY OF LONDON. 
ME. GEEENOUGH'S GEOLOGICAL MAP OF ENGLAND 
AND WALES. Third Edition. 
Sheets, No. 3 (Wales), and No. 5 (S. W., England), are now ready. Price to 
Fellows, No. 3, 9s. 6d. ; No. 5, lis. 3d. 
A limited number of Copies of this Map may be had in separate Sheets, 
uncoloured, at 2s. a Sheet; also, the portion forming a Map oi" Wales, 
uncoloured, at 5s. 
