Now ready, price 5*., 
THE ROCKS OF WORCESTEESIIIRE ; their Mineral 
Characters and FoBsil Contents. With Map and View of Rocks. By 
GEORGE E. ROBERTS, Member of the Worcestei-shire and Malvern Natu- 
ralists' Field Clubs, and of the London Geologists' Association. 
" An uncouth chronicle of glorious years." — Wobdswobth. 
London : J. Masters, Aldersgate Street and New Bond Street. 
In Three Volumes, Royal Quarto, £8 8*., 
q^HE GEOLOGY OF PENNSYLVANIA. A Government 
J- Survey : with a General View of the Geoloot op the United States, 
Essays on the Coal Fornlation 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., Professor of Natural 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, Chancebt 
Lane, W.C. 
Now ready, price Is. 6d., 
SIR EODERICK MUECHISON'S NEW GEOLOGICAL 
SKETCH MAP OF SCOTLAND. 
London: "GEOLOGIST" Office, 156, Strand. 
On the 10th of July will be published, 
MR. DAVIDSON'S MONOGRAPH OF SCOTTISH 
CARBONIFEROUS BRACHIOPODA. 
London : " GEOLOGIST " Office, 156, Strand. 
For furtJier particulars of these and other New Publications, see Advertisement, 
• Paae 1. 
GEOLOGICAL SOCIETY OF LONDON. 
MR. GREENOUGH'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, 9«. Qd. ; No. 5, 11«. 3d. 
A limited number of Copies of this Map may be had in separate Sheets, 
uncoloured, at 2s. a Sheet j also, the portion fonning a Map oi" Wales, 
uncoloured, at 5s. 
