MR. J. TEN N ANT, GEOLOGIST, 



149, STRAND, LONDON, W.O., 



Gives practical Instruction in Mineralogy and Geology. He can also supply ele- 

 mentary collections of Minerals, Rocks, and Fossils on the following terms : — 

 100 Small Specimens, in cabinet with three trays .... £2 2 0 

 *200 Specimens, larger, in cabinet with five trays .... 5 5 0 

 300 Specimens, larger, in cabinet with eight drawers . . . 10 10 0 

 400 Specimens, larger, in cabinet with twelve drawers ... 21 0 0 

 More extensive collections, either to illustratb Mineralogy or Geology, at 50 to 100 

 Guineas each, with every requisite to assist those commencing the study of these 

 interesting branches of science, a knowledge of which affords so much pleasure 

 to the traveller in all parts of the world. 



* A collection for Five Guineas, which will illustrate the recent works on Geo- 

 logy, by Murchison, Buckland, Lyell, Mantell, Phillips, Ansted, Page, and others, 

 contains 200 specimens, in a mahogany cabinet with five trays, viz. : — 



MINERALS, which are either the components of RoGks, or occasionally imbed- 

 ded in them: — Quartz, Agate, Chalcedony, Jasper, Garnet, Zeolite, Hornblende, 

 Augite, Asbestos, Felspar, Mica, Talc, Tourmaline, Calcareous Spar, Fluor, Selenite, 

 Baryta, Strontia, Cryolite, Salt, Sulphur, Plumbago, Bitumen, Jet, Amber, Coal, &c. 



NATIVE METALS, or METALLIFEROUS MINERALS : These are found in 

 masses, in beds or in veins, and occasionally in the beds of rivers. Specimens of 

 the following Metallic Ores are contained in the cabinet • Iron, Manganese, Lead, 

 Tin, Zinc, Copper, Antimony, Silver, Gold, Platina, &c. 



PtOCKS : Granite, Gneiss, Mica-slate, Clay-slate, Porphyry, Syenite, Serpentine, 

 Sandstones, Limestones, Basalt, Lavas, &c. 



PALAEOZOIC FOSSILS, from the Llandeilo, Wenlock, Ludlow, Devonian, and 

 Carboniferous Rocks. 



SECONDARY FOSSILS, from the Lias, Oolite, Wealden, and Cretaceous Groups. 



TERTIARY FOSSILS, from the Woolwich, Barton, and Bracklesham Beds, 

 London Clay, Crag, &c. 



In the more expensive Collections some of the specimens are rare, and all more 

 select. 



EXTENSIVE AND VALUABLE COLLECTION OF MINERALS. 



Mr. TENNANT bought at the Stowe Sale the Duke of Buckingham's Collection 

 of Minerals, which he has greatly enriched by a collection of Coloured Diamonds, 

 Australian Gold, Malachite, and many other specimens of great value and interest. 

 The Collection, consisting cf 3,000 specimens, is in two cabinets, each containing 

 thirty drawers, with a glass case on the top for large specimens, and is offered at 

 £2,000. 



Such a Collection is well adapted for any public Institution, or any gentleman 

 interested in mining pursuits or practical geology, as some of the specimens are 

 finer than those m the British Museum. 



Models of Crystals in Glass and Wood to illustrate the section on Crystallo- 

 graphy and Mineralogy in " Orr's Circle of the Sciences," by the Rev. Walter 

 Mitchell, M.A., and Professor Tennant, F.G.S. 



SIX DIAGRAMS OF THE EXTINCT ANIMALS, by B. W. Hawkins, 

 F.L.S., F.G.S. , &c, adapted to Educational Pui^poses. Size of each diagram, 40 

 by 21) inches, in double-tinted lithography. Price £1 10s. 



Catalogue of 2,000 of the most common Fossils found in the British Isles, being 

 a list of those in the Private Collection of J. TENNANT, F.G.S. Price 2s. 



All the recent Works relating to Mineralogy, Geology, Conchology, Chemistiy, 

 and Botany; also Geological Maps, Models, Diagrams, Hammers, Blowpipes, 

 Magniiynig Glasses, Platina Spoons, Electrometer and Magnetic Needles, Glass-top 

 Boxes, Brass and Steel Forceps, Acid Bottles, Microscopic Objects, &c, can be 

 Bupplied to the Student in these interesting branches of Science, by J. TENNANT, 

 Mineralogist by Appointment to Her Majesty, 149, Strand, London, W.C. 



