Che Journal of Geology 
Published on or about the following dates: February 1, March 15, May 1, June 15, 
August 1, September 15, November 1, December 15. 
Vol. XX CONTENTS FOR OCTOBER-NOVEMBER, 1912 No. 7 
THE DISCONFORMITY BETWEEN THE BEDFORD AND EIT FORMATIONS IN CENTRAL OHIO 
CHARLES S. PROSSER 585 
GLACIATION IN THE TELLURIDE QUADRANGLE, COLORADO. II - - - - ALLEN DAviD HOLE 605 
ON THE STRATIGRAPHIC POSITION AND AGE OF THE JUDITH RIVER FORMATION. II A. C. PeEatr 640 
SOME TRIASSIC FOSSILS FROM SOUTHEASTERN ALASKA - - - - - - WALLACE W. Atwoop 653 
PRELIMINARY NOTES ON SOME IGNEOUS ROCKS OF JAPAN. VI - - - - - - S. Kozu 656 
THE EFFECT OF IGNEOUS INTRUSIONS ON THE ACCUMULATION OF OIL IN NORTHEASTERN 
MEXICO - - - - - - - - - - - - - - - - - - V.R. Garrias 666 
EDITORIAL hag ein to aeietic cern can ane i eel arly ah heen SL Siena Masri DR antennae ye 
TSO DN EIB 1 fSHeneseon rca aig elena ay ecard rat asl es os aR aE Mag BU So Cia uM ec Go 
AP CORRECTION (co 0) suaie gh clo Sete cine NOL ie a ees Sic hoa a 27 na et UY a ec a 
The Journal of Geology is published semi-quarterly. |The subscription price is $4.00 per year; the 
price of single copies is 65 cents. {] Postage is prepaid bythe publishers on all orders from the United States, 
Mexico, Cuba, Porto Rico, Panama Canal Zone, Republic of Panama, Hawaiian Islands, Philippine Islands, 
Guam, Tutuila (Samoa), Shanghai. Postage i is charged extra asfollows: For Canada, 30 cents on annual 
subscriptions (total $4.30), on single copies, 4 cents (total 69 cents); for all other countries in the Postal] 
Union, 53 cents on annual subscriptions (total $4.53), on single copies, 11 cents (total 76 cents). {| Remit- 
tances should be made payable to The University of Chicago Press and should be in Chicago or New York 
exchange, postal or express money order. If local check is used, To cents should be added for collection. 
The following agents have been appointed and are authorized to quote the prices indicated: 
For the British Empire: The Cambridge University Press, Fetter Lane, London, E.C., and William 
Wesley & Son, 28 Essex Street, Strand, London. Yearly subscriptions, including postage, 18s. 8d. each; 
single copies, including postage, 35. 2d. each. 
For the continent of Europe: Th. Stauffer, Universitatsstrasse 26, Leipzig, Germany. Yearly sub- 
scriptions, including postage, M. 19 each; single copies, including postage, M. 3.20 each. 
For Japan and Korea: The Maruzen-Kabushiki-Kaisha, rr to 16 Nihonbashi Tori Sanchome, 
Tokyo, Japan. Yearly subscriptions, including postage, Yen 9.00 each; single copies, including 
postage, Yen 1.50 each. 
Claims for missing numbers should be made within the month following the regular month of 
publication. The publishers expect to supply missing numbers free only when they have been Jost in 
transit. 
Business correspondence should be addressed to The University of Chicago Press, Ciesce Il. 
Communications for the editors should be addressed to them at The University of Chicago, 
Chicago, III. 
Contributors are requested to write scientific and proper names with particular care and in citations 
to follow the form shown in the pages of the Journal. 
Separates, if desired, must be ordered in advance of SENET Separates of Jeading articles will be 
_ printed as ordered, of which 50 (without covers) will be furnished graézs, the actual cost of the remainder 
(and covers, if desired) to be paid for by the author. The table below shows the approxemate cost of 
separates consisting of plain text or text with line engravings. The actual cost may vary from the figures 
given, and will depend upon the amount of work in re-making the pages into forms, press work, paper, 
binding, etc. Separates containing half-tones may be expected to cost somewhat more than the rates 
given, the increase depending upon the number of cuts and the amount of work required upon them. 
Number of copies - 50 100 150 200 
letterpress, for l4. pages Or leSsi) casi acini. $1.40 $1.60 $1.80 $2.00 
Letter-press, for 8 pagesorless . ... . I.90 2.20 2.50 2.80 
Letter-press, for 16 pages orless ... . . . 2220 4.00 4.60 5.30 
Single plates (1 double=2'single))., ees. . +90 1.10 1.30 1.50 
Covers ;with:- tithes eee spare Salar eect sun eo) 1.20 1.69 2.00 2.40 
Entered March 20, 1893, at the Post-office at Chicago, Ill., as second-class matter, under Act of Congress, March 3, 1879. 
