viii ADVERTISEMENT. 
COMMENCED JANUARY, 1888. TWO VOLUMES PER YEAR. 
AMERICAN GEOLOGIST, 
Laat 
The Oldest Exclusively Geological Magazine Published in America. 
EDITORS voilier tei 
CHARLES E. PN Ph. D., F. G. S. A., Yale University, New Haven, Conn. 
SaAMUEL Carvin, Ph. D., F. G. S. A., State aae State University, Iowa City, Ia. 
Joun M. Bins. M. A., Deut, Geol. Gessell., Soc. Im v m New York Geol, ria rvey, A y, N.Y. 
Epwarp 2 CLAYPOLE, B. A., D. Se. (London), F.G , E. and A., Buchtel Siege, in, 
fion W. Craain, B. Se., F. G. S. A., Professor of Geology and Paleontology, Colorado College, 
Colorado rin Colo. Texas Geol. Survey. 
Joun Everman, Esq.. F. a fae S AAT. ¥ GB M. LM, ‘Oakhurst,’ Easton 
Persiror Frazer, Doct. . Sei. Nat., Officier de P Instruction Publ iqu s (Franee), iba A 
Reichsanstalt (Wien), A G.S. "d Prof. of Chem., Horticul. Soc., Philadelphia, Pa. 
Epwarp Q. Urnicng, M. A., F. G. S. A., lasse n Geol. Bur rv, of Minn., &e. , Newport, Ky. 
Warren UrnaAM, M. A., F. G. S. A., Minnesota Geological S Served Somerville, 
Ph. D, F. G. S. 4, F. A. G. $, Director of the Michigan 
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N H. WiNCHELL, M. A., F. 8. S. À.; State Geologist, Univ, ER Minneapolis, Minn. 
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TERMS. 
To Subscribers in the United States, — and Mexico. : . 2; $3.50 a year 
'To other Subscribers in the Postal Unio ; : ^ . 4.00 a year 
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pleted; the fifteent th aira vith "the je fas Pee for Jan sees " 1895. dens ice We has. 
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and nowhere else are results ined of greater economic and ieu importance. 
The AMERICAN GEOLOGIST d gee before its readers fro onth to go the 
latest results of geological work. In addition to the longer Siue it gives synopses of 
recent geological italics, and brief notes on current geological events. 
IT IS NOT THE ORGAN OF ANY INSTITUTION, NOR OF ANY SECTION OF 
THE COUNTRY, NOR OF ANY PARTY. 
The numbers for 1888 will hereafter be sent to new subscribers for $3. ". = bound in cloth for $4.50 ; 
those for 1889, m ec 1892, 1893, and ei ees baer each, or man for $3.50 . New subscribers who- 
remit $22 will n e all back numbers and th bseription for Fifty pr gg per year postage must be: 
added to pei "or subseribers not living fn North pinus “If bound volumes are ordered, the reas 
= be $23, ar and the Muneportation must be paid by the subscriber. There are two volumes in each yea 
volume having over 400 pages. 
SAMPLE COPIES 20 CENTS. 
THE GEOLOGICAL PUBLISHING CO., 
Minneapolis, Minn., U. S. A., Oct. 1, 1894. 
European Agent, Mr. HENRY CLAYPOLE, 
Manager of the London & Co. Bank, 
SITTINGBOURNE, KENT, Exc. 
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