bfä) THF PUBLICATIONS OF THE BUREAU O
DEPARTMENT OF THE INTERIOR.
FRANKLIN K. LANE, Secrbiary. -
PUREAU OF MINES
VAN. H. MANNING, DIRE'
A. limited edition of each publication of the Bureau of Mines is printed for free distribution to residents of the United States and its possession "*HBeea-use of the demand from within the United States and the limited supply, the Bureau of Mines can not undertake to send its reports free to residents of foreign countries, except Canada, Mexico,JP*öama, and Cuba, in which countries the mailing frank of the United States Government is honored. Under the law no person am obtain free more than one copy of a publication.
Residents of foreign countries other than Canada, Mexico, Panama, and Cuba who desire these reports should apply to the Superintendent ofj Documents, Government Printing Office, Washington, -©J. C, who Igas copies for sale at the cost of printing and postage.
The publications of the Bureau of Mines are divided into three classes—bulletins, technical papers, and miners' circulars. The bulletins and technical papers are, as a rule, technical in eharac^r and contain the results of investigations by the bureau. The asfiiijRers' , circulars are written in nontechnical English, and deal with subjects relating to the prevention of mine accidents, rescue equipment and methods, or to othe- natters of general interest among men actually engaged in mining.
a the demand for many of the bureau's publications can not ba met by U«* free editions printed under the appropriations made by Congress, and as the bureau's investigations have broadened so that '■ ' p'Tt-mx is likely to take an equal interest in all of them, ap-ph.air£";,»■. x.".blieations are asked to cooperate in insuring an equitable distribution by applying for only those publicati' s th-t are of espc.j interest, la asking for publications, please order.them by i" rnhc-: aud tit'Jr.-. Applications should be addressed to the Director Bureau of Miaes. Washington, D. C. •'orsona vs-.o rre interested in the Bureau of Mines publications and wish to ou" "ln advance notices of the bulletins and other papers '" lte ics«fc,i a-' requested, to notify the director in order that their*