PRACTICAL GEOLOGY.— KING^S COLLEGE, LONDON.— 

 PROFESSOR TENNANT, F.G.S., will commence a course of Lectures on Wednesday 

 morning, April 30, at Nino o'clock, having especial reference to the application of Geology to 

 Engineering, Mining, Architecture, and Agriculture. The Lectures will be continued on each 

 succeeding Friday and Wednesday at the same hour. Fee, £1. lis. iH. 



R. W. JELF, D.D., PnixciPAL. 

 IST.B. — The Class will he accompanied by the Professor to the British Museum, the Museum 

 of Practical Geology, the Great Exhibition, and to places of geological interest in the coimtry. 



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

 W.C., has greatly improved his elementary Collections of Minerals, Rocks, and Fossilfl, 

 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, largei', in ca])inct with five trays 5 5 0 



300 Specimens, larger, in cabinet with eight tlrawers .... 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. : — 



MINEEALS which arc either the components of Eocks, or occasionally imbedded in them : — Quartz, 

 Agate, Chalcedony, Jasper, Garnet, Zeohte, 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 MINEEALS : these are found in masses, in beds, or in 

 veins, and occasionally in the l)eds of rivers. Spocinions of the following: Metallic Ores are contained in 

 the Cabinet : — Iron, Manfjanese, Lead, Tin, Zinc, Copper, Antimony, Silver, Gold, Platina, etc. 



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

 Basalt, Lavas, Clay, Conglomerate, etc. 



PALEOZOIC FOSSILS, from the Llandoilo, Wenlock, Ludlow, Devonian, and Carboniferous Eocks. 



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



TEKTIAEY FOSSILS, from the AVoolwich, l^arton, and Bracklesham Beds, London Clay, Crag, etc. 



In the more expensive Collections some oi the Specimens are rare, and all 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 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 tliirty drawers, with a glass 

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



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

 Milling pursuits or practical Geology. 



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



Sold in Cases, bound and lettered to resemble large octavo, qiuirto, 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. 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. Walter Mitchell, M.A., and Propessor Tennant, F.R.G.S. 



WATERHOUSE HAWKINS'S MODELS OF EXTINCT ANIMALS. 



Scientific and other Institutions can be supplied -mth. Mr. Waterhouse Hawkins's Geo- 

 logical Restorations of the Extinct Animals — Fte7'odactyle,I(iuanodon,Megalosauriis, 

 Flesiosaurus (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. 5s. Packing case, 

 8s. 6d. extra. 



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

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



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

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



Lately Published, a Catalogue of 2000 of the most common fossils foimd in the British Isles, 

 being a list of those in the private collection of J. Tennant, F.G.S. Price 28. 



All the recent Works relating to Mineralogy, Geology. Conchology, Chemistry, Zoolngy, and 

 Botany; also Guide Books, Scientific Portraits, Geological ^Majis, ISlodols. Diagrams, llimiuuTS. 

 Blowpipes, ]Miignifving Glasses, Platina Spoons, Electromet»M' aiul !Magn»'tK' Nc»'tllt>s, tilass-top 

 Boxes, Brass and Steel F(n"ceps, Acid Bottles. Microscoj)ic Objcn ts. etc., can be supj)lii'<l to the 

 Student in these int(M-esting branches of Science, by JA^MJCS TEJs'NAKT, Mineralogist by 

 Appointment to Her Majesty, 119, Strand, London, W.C. — Practical Instruction in MiuertUogy 

 naid Geology can be had. 



