ADVERTISEMENTS. 



5 



NATURAL HISTORY AGENCY OFFICES, 



MR, G. B. SOWERBY has removed the above from the Strand to his private 

 residence (at Mr. Weiss), 32, GREAT RUSSELL-STREET, BLOOMS- 

 BURY. G. B. S. sells on commission, prepares for auction, conducts exchanges 

 of shells, miaerals, fossils, books, names and arranges collections of shells, &c. 

 He has at present on hand some very fine reserves from collections of shells for 

 sale. 



The ILLUSTRATED INDEX OF BRITISH SHELLS, coloured, at 30s., 

 contains figures of all the recognized species. The Thesaurus conchyHorum, 

 pi. 19, contains AnciUaria and other genera. A Hberal discount on personal 

 application to No. 32, GREAT RUSSELL-STREET, BLOOMSBURY. 



ISLE OF WIGHT FOSSILS. 



H KEEPING can famish smaU or large Collections of FOSSILS from the 

 • Hempstead, Bembridge, and Headon Series, and Barton Clay of the Isle 

 of Wight, Bracklesham Sands of Bramshaw, and Barton Clay of Barton, at Id. 

 and upwards per specimen, Hsts of which can be sent on apphcation. 



The specimens are aU collected by himself, and are kept carefally separate. 

 Satisfactory references can be given to several well-known Geologists by whom 

 he has been employed during many years. 



H. K. also acts as a guide to the difierent geological looaKties. 



Stroud Place, Freshwater, Isle of Wight. 



FOSSILS, MINERALS, AND ROCKS. 



JAMES R. GREGORY has for Sale large Collections of the above, as single 

 specimens, or in collections, or as series from the various formations, etc., at 

 very reasonable prices. 



British rocks in collections of 100 to 200 specimens from various parts of the 

 British isles, stratigraphically arranged from aU formations, with name and 

 locahty. These are all clean and fresh-broken specimens, all of the same size in 

 each collection, so as to be arranged neatly and without waste of room in 

 cabinets, &c. 



Fragments of minerals for analysis by blowpipe, etc., in collections of 300 spe- 

 cimens in boxes, price 18s., or in single series of 50 at 3s., also 40 larger fragments 

 of rare or new minerals, 10s. 



Rare minerals and earths for chemical purposes, manufactures, etc. ; crystals of 

 diamonds, and aU the varieties of precious stones, in. collections, etc. 



The fossils consist of a large and fijae collection, aU the British strata from the 

 Pleistocene to Cambrian, including fine specimens of fishes from the Devonian, 

 Lias, Carboniferous, and Oohtic series. Also fine museum specimens of Cyclop- 

 teris Hibernica, Holoptychius, Coccosteus, Turtles, and various other interesting 

 fossils, which may be obtained in collections, or as siagle specimens. 



Small or large collections can be arranged to order, for which estimates can be 

 torwarded. 



Scientific Books, Maps, Charts, Cabinets, Glass-capped Boxes, Hammers, and 

 aU kinds of apparatus necessary for the collection and arrangement of Geological 

 and Mineralogical specimens. 



Lists of species of the Devonian fishes with prices, and hsts of the contents of 

 collections of fragments of minerals can be had on application to 



J. R. GREGORY, 



MINERALOGIST. 

 3, KING WILLIAM-STREET, STRAND, LONDON, W.C. 



