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| The Geological Wagazine Advertiser. 
N the Preface to the ‘Student's ELEMENTS OF GEOLOGY,” by Sir CHARLES 
LYELL, Bart., F.R.S., etc., 1874, he says :—‘‘ As it is impossible to enable the reader 
to recognize 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 from 
Mr. TENNANT (149, Strand), Teacher of Mineralogy at King’s College, London.” These 
Collections are supplied on the following terms in plain Mahogany Cabinets :— 
too Small Specimens, in Cabinet with Three Trays ........42 2 0 
*200 Specimens, larger, in Cabinet with Five Trays ......... yams) 
300 Specimens, larger, in Cabinet with Nine Drawers ...... I0 I0 O 
400 Specimens, larger, in Cabinet with Thirteen Drawers 2t 0 o 
* A Collection for Five Guineas, to illustrate the recent works on Geology, by Ansted, 
Buckland, Lyell, Mantell, Murchison, Page, Phillips, and others, contains 200 specimens, 
in a 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, etc. 
NATIVE METALS, or METALLIFEROUS MINERALS: these ate found in masses or beds, 
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, Platinum, Mercury, Titanium, etc. 
Rocks: Granite, Gneiss, Mica-slate, Clay-slate, Porphyry, Serpentine, Sandstones, 
Limestones, Basalt, Lavas, etc. 
PAL#ozoic Fossrts from the Cambrian, Silurian, Devonian, Carboniferous, and 
Permian Rocks. 
SECONDARY FossiLs from the Rheetic, Lias, Oolite, Wealden, and Cretaceous Groups. 
TERTIARY FOSSILS from the Plastic Clay, London Clay, Crag, etc. 
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 AND DIAGRAMS TO ILLUSTRATE LECTURES ON 
GEOLOGY AND GEOGRAPHY. 
S1x DIAGRAMS OF GENERIC FORMS OF FORAMINIFERA. 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 Recent and Fossil Foraminifera, and other Microscopic 
Objects, can be supplied at 1s. each, or tos. 6d. per dozens 
Mr. THOMAS HAWKINS'’S ‘GREAT SEA-DRAGONS.” Containing 30 folio plates (which 
form 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 £2 tos. 
BUCKLAND’S BRIDGEWATER TREATISE. Last Edition, 1858. Containing oo plates of 
Fossils, Sections, etc. 2 vols., 24s. ; reduced to 145. 
THE MASTER-BUILDER’S PLAN ; or, the Principles of Organic Architecture as Indicated 
in the Typical Forms of Animals. By GEORGE OGILVIE. 45. 
AN INTERESTING SERIES OF CHARTS, Engraved by Mr. J. W. Lowky, for the Society: 
for Promoting Christian Knowledge, will be found useful to Students in Natural History, 
and can be had either in the form of a book, price 4s., or mounted on canvas and roller, 
varnished, price 6s. each. 
Tabular View of the leading Orders and Families of Brrps, REPTILIA and AMPHIBIA, 
FISHES, MAMMALIA, MOLLUSCA, INSECTS, MYRIAPODA, ARACHNIDA, CRUSTACEA, 
ANNELIDA, and EnTozoA. The VEGETABLE KINGDOM, arranged according to the 
Natural Orders. CHARACTERISTIC BRITISH FOSSILS, stratigraphically arranged. 
GEOLOGICAL MAP OF THE BRITISH ISLES. By Professor J. PHILLIPS, Engraved by 
. W. Lowry. Corrected to 1862. 2{t. roin. by 2ft.2in. Price ras, 
Firry LITHOGRAPHIC PORTRAITS of Eminent Naturalists and Scientific Men, called the 
“IpswicH PorTRAITS.” Published about 1850, by G. RANSOME, F.L.S. Price £10. 
They include Sir G. B. Airy, Dr. Allman, Professor Ansted, Sir H. De La Beche, Dr. 
Bowerbank, Dr. Brown, Prof. Buckland, Dr. Carpenter, John Curtis, E. Doubleday, 
Charles Darwin, Prof. Faraday, John Gould, Professors Grant, Harvey, and Henslow, Sir 
W. J. Hooker, Dr. Lancaster, Dr. Lindley. Sir Charles Lyell, Sir R. Murchison, Professors 
Owen, Phillips, and Sedgwick, Bishop Stanley, G. R. Waterhouse, Westwood, Yarrell, etc. 
JAMES TENNANT, Geologist, 149, Strand, London, W.C. 
Fune, 1880. 
