MR. TENNANT, GEOLOGIST. 149, STRAND, LONDON, 

 W.C., lias greatly improved his elementary Collections of Minerals, Rocks, and Fossils, 

 which are well suited for scientific Presents, and can be supplied 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 . . . . 210 0 



More extensive Collections, either to illustrate 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 Geology by Buck- 

 land, Murchison, Lyell, Mantell, Ansted, Page, and others, contains 200 Specimens, in a 

 Mahogany Cabinet, with five trays, comprising the following specimens, viz. : — 



MINEKALS which are either the components of Kocks, or occasionally imbedded in them : — Quartz, 

 Agate, Chalcedony, Jasper, Garnet, Zeolite, Hornblende, Augite, Asbestus, Felspar, Mica, Talc, Topaz, 

 Tourmaline, Spinel, Calcareous Spar, Fluor, Selenite, Baryta, Strontia, Cryolite, Salt, Sulphur, Plumbago, 

 Bitumen, Jet, Amber, Coal, etc. 



NATIVE METALS, or METALLIFEROUS MINEKALS : 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, etc. 



KOCKS : — Granite, Gneiss, Mica-slate, Clay-slate, Porphyry, Serpentine, Sandstones, Limestones, 

 Basalt, Lavas, Clay, Conglomerate, etc. 



PALAEOZOIC FOSSILS, from the Llandeilo, "Wenlock, Ludlow, Devonian, and Carboniferous Rocks. 



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



TERTIARY FOSSILS, from the Woolwich, Barton, and Bracklesham Beds, London Ciay, Crag, etc. 



In the more expensive Collections some of the Specimens are rare, and all more select. 



EXTENSIVE AND VALUABLE COLLECTION OF MINERALS FOR SALE. 



Me. 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, Gold from Australia, 

 Canada, Wales, etc., and many other specimens of great value and interest. The Collection, 

 consisting of 3000 Specimens, is in two cabinets, each containing thirty drawers, with a glass 

 case on the top for large specimens, price £2000. 



It is well adapted for any public Institution, or for any Gentleman taking an interest in 

 Mining pursuits or practical Geology. 



SOPWITH'S GEOLOGICAL MODELS, IN WOOD OF DIFFERENT COLOURS. 



Sold in Cases, bound and lettered to resemble large octavo, quarto, or folio volumes. 



Set of Six Models, 3 ins. sq. £2 0 0 I Twelve Models, 3 ins. sq. £4 0 0 

 The same, 4 ins. sq. 2 10 0 | The same, 4 ins. sq. 5 0 0 



MODELS OF CRYSTALS IN GLASS AND WOOD. 



To illustrate the section on Crystallography and Mineralogy in ' Orr's Circle of the Sciences,' 

 by the Rev. "Waltee Mitchell, M.A., and Peoeessoe Tennant, F.R.G.S. 



WATERH0USE HAWKINS'S MODELS OF EXTINCT ANIMALS. 



Scientific and other Institutions can be supplied with Mr. Wateehottse Hawkins's Geo- 

 logical Restoeations oe the Extinct Animals — Pterodaetyle,Iguanodon,Megalosaurus, 

 Plesiosaurus (two species), Ichthyosaurus, and Labyrinthodon, — seven models, reduced to a 

 scale of one inch to a foot, from those of the Crystal Palace. Price £5. 5s. Packing case, 

 8s. 6d. extra. 



SIX DIAGEAMS OF THE EXTINCT ANIMALS, by W. B. Hawkins, E.L.S., etc., adapted for 

 Educational Purposes. Size of each Diagram, 40 by 29 inches, in double-tinted Lithography. Price £1. 10s. 



Just 'Published. A coloured Lithographic Print (size 34 inches by 28 inches) of W. 

 Hawkins's Restoeation of Extinct Animals. Price 12s. 



"Lately Published, a Catalogue of 2000 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, Chemistry, Zoology, and 

 Botmy ; also Guide Books, Scientific Portraits, Geological Maps, Models, Diagrams, Hammers, 

 Blowpipes, Magnifying Glasses, Platina Spoons, Electrometer and Magnetic Needles, Glass- top 

 Boxes, Brass and Steel Forceps, Acid Bottles, Microscopic Objects, etc., can be supplied to the 

 Student in these interesting branches of Science, by JAMES TENNANT, Mineralogist by 

 Appointment to Her Majesty, 149, Strand, London, W.C. — Practical Instruction in Mineralogy 

 and Geology can be had. 



