Tavistock, 75, 358, 378, TIDDEMAN, R. H., 82, 303, Trias, 125

Teignmouth, 136, 139, 279, Tilly Whim, 206, 207

Valley Gravel, 300, Wastdale Crag, 47, 304,

Watchet, 131, 187, 144, Weybourn, 290, 309, 333

In crown Svo. with 486 Figures on Wood, price 6s. cloth.

A GLOSSARY OF MINERALOGY.

By HENRY WILLIAM BRISTOW, F.R.S. F.G.S.
Director of the Geological Survey of England and Wales.

OPINIONS of the PRESS.

This is really a handy book. A concise account of all known minerals is given in alphabetical order, and references are added to the cases in which specimens may be found in the British Museum and the Museum of Practical Geology. There is also a useful introduction on the characters, properties, and chemical composition of minerals.'-Medical Times and Gazette.

We can recommend Mr. Bristow's Glossary of Mineralogy to all geologists, as well as to mining students, and the cadets of Sandhurst and Woolwich. It is a real handy book; the arrangement, being alphabetical, is suited to every one's capacity. . . As a work of general utility, this book is the best of its class, and the only one we should think of opening by way of amusement We refer to such articles as arsenolite, amber, asbestos, asphalt, aventurine, &c. or to that on the diamond.'-Critic.

The student in physical science has long desired a book combining facility of reference with a concise and familiar account of all the known minerals. This want is now fully supplied by the present work, which is not a mere glossary, as its title would imply, but is intermediate between it and a manual. The first fifty pages contain a description of the general characters of minerals, their various properties, composition and classification; while the Glossary professes to give information upon every known mineral substance, and this information is as complete as the present state of our knowledge will allow. . . . . The author's task has been ably executed, and his work will be much in request.'-Lancet.

There has been hitherto no work in English at all answering to this Glossary of Mr. Bristow. It is a Dictionary of Mineralogy of the most complete kind, and yet in the most complete form, and must become a sine quâ non to every practical mineralogist. Unencumbered with any system of classification, it describes every mineral species or variety alphabetically, with references to synonyms, English, French, and German. The description of the minerals is at once concise and yet sufficient for practical purposes. It includes their crystalline and physical characteristics, chemical composition (shown both by formula and anaylses), behaviour before the blowpipe, and their principal localities and uses. It need scarcely be said that Mr. Bristow, having the resources of the Jermyn Street Museum at his hand, as well as the assistance of so eminent a mineralogist as Mr. Warington Smith, has had great opportunities of turning out a good book; and he has certainly done so. Notwithstanding the great body of information it contains, this little volume has the advantage of extreme clearness of type and great portability. For tourists and practical men interested in mineralogy it will be indispensable; among the former we expect Mr. Bristow's green book will be seen often side by side with Mr. Murray's red volumes.'-Mining and Smelting Magazine.

London, LONGMANS & CO.