"Will supply a much felt want, especially among Colonists, in whose way are so often thrown many mineralogical specimens the value of which it is difficult to determine."—Engineer.

"How to find commercial minerals, and how to identify them when they are found, are the leading points to which attention is directed. The author has managed to pack as much practical detail into his pages as would supply material for a book three times its size."—Mining Journal.

Mining Notes and Formulæ.

NOTES AND FORMULÆ FOR MINING STUDENTS. By John Herman Merivale, M.A., Certificated Colliery Manager, Professor of Mining in the Durham College of Science, Newcastle-upon-Tyne. Third Edition, Revised and Enlarged. Small crown 8vo, 2s. 6d. cloth.

"Invaluable to anyone who is working up for an examination on mining subjects."—Iron and Coal Trades Review.

"The author has done his work in an exceedingly creditable manner, and has produced a book that will be of service to students, and those who are practically engaged in mining operations."—Engineer.

Handybook for Miners.

THE MINER'S HANDBOOK: A Handybook of Reference on the Subjects of Mineral Deposits, Mining Operations, Ore Dressing, &c. For the Use of Students and others interested in Mining matters. Compiled by John Milne, F.R.S., Professor of Mining in the Imperial University of Japan. Square 18mo, 7s. 6d. cloth.

[Just published.

"Professor Milne's handbook is sure to be received with favour by all connected with mining, and will be extremely popular among students."—Athenæum.