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

 W.C., has greatly improved his elementary Collections of Minerals, llocks, and Fossils, 

 which are well suited for scientific Presents, and can be 8Ui)plied on the following terms : — 



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



*200 Specimens, largex*, 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, cither to illustrate Mineralogy or Geology, at 50 to 100 Guineas 

 each, with every requisite to assist those couiTnencing the study of these interesting branches 

 of science, a knowledge of wliich aflbrds so mucJi pleasure to the traveller in all parts of the 

 world. 



* A Collection for Five Guineas, wliich will illustrate the recent works on Geology by Buck- 

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

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



MINEEALS which are either the components of llocks, or occasionally im])ed(lod in them : — Quartz, 

 Agate, Chalcedony, Jasper, Garnet, Zeolite, Hornl)lende, Angite, Asbestus, Felspar, Mica, Talc, Topai, 

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

 Bitumen, Jet, Ainber, 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. 



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

 Basalt, Lavas, Clay, Conglomerate, etc. 



PALvEOZOIC FOSSILS, from the Llandeilo, Wenlock, Ludlow, Devonian, and Carboniferous Eocks. 



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



TBETIAEY FOSSILS, from the Woolwich, Barton, and Braeklesham Beds, London Clay, Crag, etc. 



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



EXTENSIVE AND VALUABLE COLLECTION OF MINERALS FOR SALE. 



Mr. Tennant bought at the Stowe Sale the Duke of Buckingham's Collection of Minerals, 

 which he bas greatly enriched by a Collection of Coloured n)iamonds. 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 tlxirty ch'awers, with a glasa 

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



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

 Mining pm'suits 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. £i 0 0 

 The same, 4 ins. sq. 3 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 Peofessoe Tennant, F.R.G.S. 



WATERHOUSE HAWKINS'S MODELS OF EXTINCT ANIMALS. 



Scientific and other Institvitions can be supplied -with Mr. Wateehouse Hawkins's Geo- 

 logical IIestoeations of the Extinct Animals — Pterodactyl e, Ignanodon, MegalosaurHS, 

 Flesiosanrtis (two species), Ichthyosaurus, and Labyrinth odon, — seven models, reduced to a 

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

 8s. 6d. extra. 



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

 Educational Pui-poses. Size of each Diagram, 40 by 29 inches, in double-tinted Lithography. Price £1. IDs. 



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

 Hawkins's Kestoeation op Extinct Animals. Price 12s. 



Lately Fuhlishcd, a Catalogue of 2000 of the most common fossils found ui 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 

 Botany; also Guide Books. Scientific I'orl raits, Geological !Maps, ISIodels, Diagrams, Ilan'uuers, 

 Blowpipes, IMngnilyiiig Glasses, IMatiua Spoons, I'-K-cironu'ter and Magnetic NeeiUes, Ghiss-top 

 Boxes, Brass and Steel Forc("i)S, Acid Bottles, ^Microscopic ()bj(H"ts, etc., can be supplied to the 

 Student in these interestuig branches of Science, by JA^MES TEN^s' A2v'T, ^Mineralogist by 

 Appointment to Her Majesty, Hi), Strand, Loudon, W.C. — Practical Instruction in Mineralogy 

 and Geology can be had. 



