Six Elementary Lectures on Rocks and 

 Metallic Minerals, 



ADAPTED TO A JUVENILE AUDIENCE, 



by Professor TENNANT, at his residence, 149 Strand, London, W.C. 



On July 14, 15, 1G, 17, 18, lO, at 11 a.m. and 3 p.m. 



Terms : — Half a Guinea for the Course ; Five Shillings for Children of Fellows of the fol- 

 lowing Societies— Geological, Zoological, Chemical, Royal Microscopical, Royal Geographical, 

 Royal Horticultural, Geologists' Association, and Society of Arts. 



Prof. TENNANT will probably repeat the Lectures on MINERALOGY given during 

 the Christmas Holidays, and the Lectures on GEOLOGY given during the Easter 

 Holidays. 



Mr. TENNANT is commissioned to offer for Sale a first-class Collection of MINERALS 

 at G-odstone, Surrey, containing 3800 Specimens. Also a Collection of MINERALS and 

 ROCKS, containing 800 Specimens, near Barnstaple. 



Mr. TENNANT expects shortly to have ready for sale a choice and extensive collection 

 of RECENT SHELLS, MINERALS, ROCKS, and FOSSILS, in a large and well-made 

 Cabinet of 108 Drawers, with Glass Bookcase on the top. The Cabinet was the property 

 of the late Mrs. Ma we, and contains her private collection of Recent Shells and Minerals. 

 Amongst the latter are some Crystals of Gold, figured in Mawe's Travels in Brazil, and 

 supposed to be unique. The Bookcase contains many of the recent works on Geology by 

 Buckland, Lyell, Mantell, Murchison, Phillips, and others, and 25 Yols. of the publica- 

 tions of the Paloeontographical Society, &c. 



Mr. TENNANT, having recently received many choice Specimens, has been able to 

 enrich several Collections previously advertised for sale. They can be had at all prices, 

 varying from Five Thousand Pounds to Two Guineas, and are suitable for the Nobleman's 

 gallery, the Amateur's study, and for the working Student. 



Elementary Geological Collections at 2, 5, 10, 20, 50, to 100 guineas each, and 



every requisite to assist those commencing the study of this interesting branch of Science, 

 a knowledge of which affords so much pleasure to the traveller in all parts of the world. 



A collection for Five Guineas, to illustrate the recent works on Geology, by Ansted, 

 Buckland, Lyell, Mantell, Murchison, Page, Phillips, and others, contains 200 specimens, 

 in a plain Mahogany Cabinet, with five trays, containing the following specimens, viz. : — 



Minerals which are either the components of Rocks, or occasionally imbedded in 

 them — Quartz, Agate, Chalcedony, Jasper, Garnet, Zeolite, Hornblende, Augite, Asbestos, 

 Felspar, Mica, Talc, Tourmaline, Spinel, Zircon, Corundum, Lapis Lazuli, Calcite, Fluor, 

 Selenite, Baryta, Strontia, Salt, Sulphur, Plumbago, Bitumen, &c. 



Native Metals, or Metalliferous Minerals ; these are found in masses or beds, in 

 veins, and occasionally in the beds of rivers. Specimens of the following Metallic Ores are 

 put in the Cabinet : — Iron, Manganese, Lead, Tin, Zinc, Copper, Antimony, Silver, Gold, 

 Platina, Mercury, Titanium, &c. 



Rocks : Granite, Gneiss, Mica-slate, Clay-slate, Porphyry, Serpentine, Sandstones, Lime- 

 stones, Basalt, Lavas, &c. 



Palaeozoic Fossils from the Cambrian, Silurian, Devonian, Carboniferous, and Permian 

 Rocks. 



Secondary Fossils from the Rhaetic, Lias, Oolite, Wealden, and Cretaceous Groups. 



Tertiary Fossils from the Plastic Clay, London Clay, Crag, &c. 



In the more expensive collections some of the specimens are rare, and all more select. 



JAMES TENNANT, Mineralogist (by appointment) to Her Majesty, 

 149 Strand, London, W.C. [July 1373. 



