ADVERTISEMENTS. 



MINERALOGY, King's College, London. — Professor Tennant, 

 F.G.S., has commenced a COURSE of LECTURES on MINERALOGY, 

 with a view to facilitate the study of Geology, and of the application of Mineral 

 substances in the Arts. The Lectures began on FRIDAY, October 7th, at 

 Nine o'clock a.m. They will be continued on each succeeding Wednesday and 

 Friday, at the same hour. Fee, £2 2s. 



N.B.— The Lectures on Geology will commence on Friday, January 27, 1860, 

 at Nine a.m. R. W. JELF, D.D., Principal. 



THE NATURALIST'S ASSOCIATION, 



17, DEAN STREET, SOHO. 



This Association was established in 1853 for the purpose of encouraging col- 

 lections and scientific research in all parts of the world, for facilitating the exchange 

 of specimens, and otherwise advancing the various branches of Natural History. 



Arrangements have been made for removing the Society's property to 17 Dean 

 Street, Soho (recently the residence of the late Dr. Brown, and formeri^; the 

 Museum of Sir Joseph Banks), where, after the completion of the repairs, all the 

 Meetings and Conversaziones of the Society will be held. 



The Sale and Exchange Department, although distinct from the Library and 

 Reference Collection, will be carried on. in the same premises, under the superin- 

 tendence of Mr. John Calvert, C.E. 



The Collections at present issued are 87 in number comprising Shells, Minerals, 

 and Fossils. The Geological Specimens for exchange at present amount to about 

 17,000 ; the Mineral Specimens to about 32,000. Thirteen cases have just arrived 

 from India containing superb specimens of Apophylhte, Stylbite, Ponolyte, and 

 and some very fine specimens of Rhomboidal Quartz. This Rhomboidal Quartz 

 is one of the greatest curiosities of the day, as silica is extremely rarely crystal- 

 lized in this form. 



Another curiosity is a beautiful crystal of quartz containing several globules of 

 water. 



ENTOMOLOGY.— One case of Mantis from Australia. 



ORNITHOLOGY. — Two cases of Birds from Bogatta, chiefly Finches ; one case 

 from Bahia, chiefly Oreils and Tanagras. 



CONCHOLOGY. — Comprising many thousand specimens, and nearly all the 

 genera according to Sowerby, Grey, Woodward, and Adams. Just received — 



British. Thracia pubescens, from Devon ; Amphipeplea involutus, from 



Killarney, new ? Rissoa, from Cumberland. 

 Foreign. Halia priamus, from Peru ; Voluta fulgetrum, from Australia ; 

 New Species — Large Pandora, three specimens, reversed, from Peru ; 

 Bulimus, from Isle of Pines ; Borsonia, from Torres Straits, this 

 genus has never been found recently until the discovery of this 

 species. 



CABINETS,— It has been determined by the Society to sell their Stock of 

 of Cabinets in use as the new ones adapted to the Museum are now being fitted. 



A select Stock of new and cheap Cabinets, Glass-top Boxes, Tubes, Trays, 

 Tablets, and other Natural History requisites. 



Persons generally are invited to send specimens for exchange. 



■\TATURAL HISTORY AGENCY OFFICES, for the registering, 

 ±^ exhibition, purchase, sale, and exchange of Books, Collections, and Objects, con- 

 ducted by G. B. SOWERBY, F.L.S. Also for the pubHcation of SOWERBY'S 

 ILLUSTRATED INDEX OF BRITISH SHELLS :-all the Species, 30s.; THE- 

 SAURUS CONCHYLIORUM, 25s. each part; BRITISH FLOWERING PLANTS, 

 m numbers at 3s. 390, Strand, W.C. 



