ADVERTISEMENTS, 
7 
ATURAL HISTOKY AGENCY OFFICES, for the registering, 
exhibitiou, purchase, snle, aud exchange of Book3,Collections, and Objects, con- 
ducted by G. B. SOWKRBY, F.L.S. Also for the publication of SOWERBY'S 
ILLUSTRATED INDEX OF BRITISH SHELLS:— all the Species, 30s.; THE- 
SAURUS CONCH YLIORUM, 25s. each part; BRITISH FLOWERING PLANTS, 
in nuiubei-a at 3s. 390, Strand, W.C. 
TO GEOLOGISTS. 
RED AND WHITE CHALK of Speeton and East Yorkshire. 
The characteristic and rarer Fossila of the above formatioua constantly ou 
sale at Bridiugton. Address as under. 
Edward Tindall, Old Guildhall, Bridlington. 
OLD RED SANDSTONE FISHES from Cromarty, Gamrie, Banff, 
Caithness, Elgin, Fifeshire, &c. ; also Scottish Carboniferous Fishes and 
Fossils from all other formations, for selection of single specimens, and in 
collections. 
A large and fine collection of Minerals, for selection of single specimens, and 
iu collections, containing all the new and rare substances. 
Fragments of Minerals for analysis, in collection of 300 specimens, price 18s. ; 
also in series of 50, price 3s. ; 40 specimens of rare and new mineral fragments, 
price 10s. Lists of Contents on application to 
J. R. GREGORY, 
3, KING WILLIAM STREET, STRAND, LONDON, W.C. 
GLASS-CAPPED CIRCULAR BOXES, of various diameters and 
depths for preserving and displaying in Cabinets delicate Fossils, Minerals, 
Recent Shells, Eggs, &c., can now be puixhased of 
JAMES GREGORY, 3, King William-street, Strand. 
JOHN GRAY, 13, Upper King-street, Holborn. 
GEORGE KNIGHT, 2, Foster-lane, Cheapside. 
ROBERT HENSON, 113a, Strand. 
CAROLINE SOWERBY. 61, Great Russell-street, Bloomsbury. 
PROFESSOR TENNANT, 149, Strand. 
BRICE M. WRIGHT, 36, Great Russell-street, Bloomsbury. 
G. B. SOWERBY, 391, Strand. 
The application of these boxes to Natural History purposes may be seen in 
the Museiuns of Edinburgh, Newcastle, York, and Liverpool 
A lithographed sheet, shewing sizes and prices, may be had by post. 
EDWARD CHARLESWORTH. 
British Natural History Society, 
York, August, 29, 1859, 
PROVINCIAL INSTITUTIONS desirous of making arrange- 
ments for the delivery, during the ensuing season, of popular Lectures on 
Geology, are requested to communicate with the Editor of " The Geologist." 
