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X Chables Lyell, Bart., F.R.S., &c., Second Edition, revised and enlarged, 1874, he 

 says: — " As it is impossible to enable the reader to recognise rocks and minerals at sight by 

 aid of verbal descriptions or figures, he will do well to obtain a well-arranged collection of 

 specimens, such as may be procured fjom Mr. Tennant (149, Strand), Teacher of Mineralogy 

 at King's College, London." These Collections are bupplied on the following terms in plain 

 Mahogany Cabinets : — 



100 Small Specimens, in Cabinet with Three Trays £2 2 



*200 Specimens, larger, in Cabinet with Five Trays 5 5 



300 Specimens, larger, in Cabinet with Nine Drawers 10 10 



400 Specimens, larger, in Cabinet with Thirteen Drawers ... 21 



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

 Buckland, Lyell, Mantell, Muvchison, Page, Phillips, and others, contains 200 specimens, in 

 X 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 

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

 Platinum, Mercury, Titanium, &c. 



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

 stones, Basalt, Lavas, &c. 



Paleozoic Fossils from the Cambrian, Silurian, Devonian, Caiboniferous, and Peraiian 

 ?ocks. 



Secondary Fossils from the Rhgetic, 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 of them choice. 



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 Professor Tennant, F.G.S. 



BOOKS ANjy DIAGRAMS TO ILLUSTRATE LECTURES OK" 

 GEOLOGY ATSTD GEOGRAPHY. 



Six Diagrams of Generic Forms of Foraminifkra. Size, three feet by two feet. 

 Price 18s. for the Six Diagrams, either on paper or linen. They contain Eighty-two Figures. 

 Mounted Slides of Eecent and Fossil Foraminifera, and other Microscopic Objects, can be 

 ;upplied at Is. each, or 10s. Qd. per dozen. 



Mr. Thomas Hawkins's " Great Sea-Dragons." Containing 30 folio Plates (which 

 brm good school diagrams) of the Remains of Ichthyosaurus and Plesiosaurus from the Lias, 

 The Original Specimens are in the British Museum. Price 25s., published at 21. 10s. 



Bdckland's Bridgewater Treatise. Last Edition, 1858. Containing 90 plates of 

 '"ossils. Sections, &c. 2 vols., 24s.; reduced to 14s. 



The Master-Builder's Plan; or, the Principles of Organic Architecture as Indicated 

 n the Typical Forms of Animals. By George Ogilvie. 4s. 



An Injeresting Series of Charts, Engraved by Mr. J. W. Lowry for the Society 

 or Promoting Christian Knowledge, will be found useful to Students in Natural History, 

 ind can be had either in the foim of a look, price 4s., or mounted on canvas and roller, 

 'arnished, price 6s. each. 



Tabular View of the leading Orders and Families of Birds, Reptilia and Amphibia, 

 i'jSHES, Mammalia, Mollusca, Insects, Myriapoda, Arachnida, Crustacea, 

 Annelida, and Entozoa. The Vegetable Kingdom, arranged according to the Natural 

 )rders. Characteristic British Fossils, stratigraphically arranged. 



Geological Map of the British Isles. By Professor J. Phillips. Engraved by 

 f. W. Lowry. Corrected to 1862. 2 ft. 10 in. by 2 it. 2 in. Price 12s, 



Fifty Lithographic Portraits of Eminent Naturalists and Scientific Men, called the 



Ipswich Portraits," Published about 1850 by G, Ransome, F.L.S. Price £10. They 

 iclude Sir G. B, Airy, Dr. AUman, Prof. Ansted, Sir H. De La Beche, Dr. Bowerbank, Dr. 

 Jrown, Prof. Buckland, Dr. Carpenter, John Curtis, E. Doubleday, Charles Darwin, 

 'rof. Faraday, John Gould, Professors Grant, Harvey, and Henslow, Sir W. J. Hooker, 

 )r. Lancaster, Dr. Lindley, Sir Charles Lyell, Sir R. Murchison, Profiessors Owen, Phillips, 

 nd Sedgwick, Bishop Stanley, G. R. Waterhouse, Westwood, Yarrell, &c. 



JAMES TENISTANT, Geologist, 149, Strand, London. 



