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ADVERTISEMENTS. 



MR. TENNANT, 



. MINERALOGIST BY APPOINTMENT TO HSR MAJESTY, 



149, STRAND, LONDON, W.C., 



Gives practical lastruction in Mineralogy and Geology. He can also supply 

 elementary collections of Minerals, Rocks, and Fossils on the following terms : — 

 100 Small Specimens, in cabinet witli three trays .... £220 

 *200 Specimens, larger, in cabinet with five trays .... 550 

 300 Specimens, larger, in cabinet with eight drawers . . . 10 10 0 

 400 Specimens, larger, in cabinet with twelve drawers . . 21 0 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 Murchison, Buckland, Lyell, Mantell, Phillips, Ansted, Page, and 

 others, contains 200 specimens, in a mahogany cabinet with five trays, comprising 

 the following specimens, viz. : — 



MINERALS, which are either the components of Rocks, or occasionally im- 

 bedded in them : — Quartz, Agate, Chalcedony, Jasper, Garnet, Zeolite, Hornblende, 

 Augite, Asbestus, Felspar, Mica, Talc, Tourmaline, Calcareous Spar, Fluor, Sele- 

 nite. Baryta, Strontia, Cryolite, Salt, Sulphur, Plumbago, Bitumen, Jet, Amber, &c . 



NATIVE METALS, or METALLIFEROUS MINERALS; 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, &c. 



ROCKS : — Granite, Gneiss, Mica-slate, Clay-slate, Porphyry, Serpentine, Sand- 

 stones, Limestones, Basalt, Lavas, &c. 



PALEOZOIC FOSSILS, from the Llandeilo, Wenlock, Ludlow, Devonian, 

 and Carboniferous Rocks. 



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



TERTIARY FOSSILS, fi-om the Woolwich, Barton, and Bracklesham Beds, 

 London Clay, Crag, &c. 



In the more expensive Collections some of the specimens are rare, and all more 

 select. 



EXTENSIVE AND VALUABLE COLLECTION OF MINERALS. 



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

 Minerals, which he has gi'eatly enriched by a Collection of Coloured Diamonds, 

 Australian Gold, and many other specimens of great value and interest. The 

 Collectiou, consisting of 3,000 specimens, is in two cabinets, each containing thirty 

 drawers, with a glass case on the top for large specimens, and is offered at £2,000. 



Such a Collection is well adapted for any public Institution, or any gentleman 

 interested in mining pursuits. 



SIX DIAGRAMS OF THE EXTINCT ANIMALS, by B. W. Hawkins, F.L.S., 

 &c., adapted for Educational Purposes. Size of each diagi'am, 40 by 29 inches, in 

 double-tinted lithography. Price £1 10s. 



All the recent "Works relating to Mineralogy, Geology, Conchology, Chemistry, 

 and Botany ; also Geological Maps, Models, Diagrams, Hammers, Blowpipes, Mag- 

 nifying Glasses, Platina Spoons, Electi'ometer and Magnetic Needles, Glass-top 

 Boxes, Brass and Steel Forceps, Acid Bottles, Microscopic Objects, &c., can be 

 supplied to the Student in these interesting branches of Science, by J. TENNANT, 

 Mineralogist by Appointment to her Majesty, 149, Strand, London, W.C. 



