The Bureau of Mines, in carrying out one of the provisions of its organic act-to disseminate information concerning investigations made-prints a limited free edition of each of its publications.

When this edition is exhausted, copies may be obtained at cost price only through the Superintendent of Documents, Government Printing Office, Washington, D. C. The Superintendent of Documents is not an official of the Bureau of Mines. His is an entirely separate office, and he should be addressed:

SUPERINTENDENT OF DOCUMENTS,

Government Printing Office,

Washington, D. C.

The general law under which publications are distributed prohibits the giving of more than one copy of a publication to one person. The price of this publication is

20 cents.

First edition. February, 1918.

PREFACE.

This bulletin, one of a series published by the Bureau of Mines, contains abstracts of all mining cases of all the highest courts reported in 1918, from September to December, inclusive. The references are to the full reported cases as decided by all the courts relating to various phases of mining enterprise.

In issuing these bulletins the bureau aims to present abstracts of decisions and references within a reasonable time after the cases have been decided. It is the hope of the bureau that the bulletins will be of value to mine owners, operators, and miners. A limited edition of each bulletin is printed for free distribution. When this edition is exhausted, copies may be purchased from the Superintendent of Documents, Washington, D. C.

VAN. H. MANNING,

Director.

III