BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA V o l . 30, PP. 143-164 M » B C H 31, 1919 PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY PROCEEDINGS OF THE TENTH ANNUAL MEETING OP THE PALEONTOLOGICAL SOCIETY, HELD AT BALTIMORE. MARYLAND, DECEMBER 28, 1918. R. S. Bassler, Secretary CONTENTS Page Session of December 28............................................................................................. 144 Report of the Council........................................................................................ 144 Secretary’s report...................................................................................... 144 Treasurer’s report....................................................................................... 145 Appointment of Auditing Committee............................................................. 146 New business......................................................................................................... 146 Necrology.................................................................................................... ........ 147 Election of officers.............................................................................................. 147 Presentation of papers on paleontology....................................................... 147 Relation of the Holochoanites and the Orthochoanites to the Pro- tochoanites and the significance of the Bactritidse [abstract and discussion] ; by Amadeus W. Grabau................................................ 148 Inclusion of the Pleistocenic period in the Psychozoic era [abstract and discussion] ; by Amadeus W. Grabau...................................... 149 Philosophical aspects of paleontology; by John M. Clarke............ 150 Characters and restoration of Cope’s Sauropoda; by Henry Fair­ field Osborn.............................................................................................. 151 Camara s^urus and Amphicoelias from Canon City ; by Henry Fair­ field Osborn and Charles C. Mook...................................................... 151 Climates of the past [abstract] : Presidential address by F. H. Knowlton.................................................................................................... 151 Report of the Auditing Committee................................................................ 151 Continuation of paleontologie papers........................................................... 152 Orthogenetic development of the Costae in the Perisphinctinse [ab­ stract] ; by Marjorie O’Connell........................................................... 152 Discovery of the Oxfordian in western Cuba [abstract] ; by Bar- num Brown and Marjorie O’Connell................................................ 152 A new Eurypterid horizon [abstract] ; by George Halcott Chad­ wick............................................................................................................ 152 Economic value of paleontology; by Ralph Arnold.......................... 153 Presentation of papery on stratigraphy........................................................ 153 Age of certain plant-bearing beds and associated marine forma­ tions in South America [abstract] ; by Edward W. Berry........ 153 Typical section of the Allegheny formation [abstract] ; by Charles K. Swartz and Harvey Bassler................'........................................ 153 (143) 144 PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY Page Stratigraphy and correlation of the Coal Measures of Maryland [abstract]; by Charles K. Swartz, W. A. Price, Jr., and Harvey Bassler................................................................................................... 154 Eocene divisions of California [abstract]; by Bruce L. C lark.... 154 Some problems of the Adirondack Precambrian [abstract]; by Harold L. Ailing.................................................................................155 Permo-Triassic of northwestern Arizona [abstract]; by Hervey W. Shimer............................................................................................155 Stratigraphy and structure of the Newark system in Maryland and its relation to the Newark system of eastern North Amer­ ica [abstract]; by George Edwin Dorsey....................................... 155 Remarkable persistence of thin horizons [abstract]; by George Halcott Chadwick............................................................................... 157 Portage stratigraphy in western New York [abstract]; by George Halcott Chadwick.............................................................................. 157 Stromatopora growth on edge-on conglomerate from the Silurian; by John M. Clarke............................................................................. 157 Register of the Baltimore meeting, 1918.......................................................... 158 Officers, Correspondents, and Members of the Paleontological Society.... 159 S ession o f Saturday, December 28 The tenth annual meeting of the Society was called to order by Presi­ dent Knowlton at 10 a. m., December 28, in the Civil Engineering Build­ ing, at Johns Hopkins University. The report of the Council was the first matter of business on the program. R eport o r t h e C o u n c il To the Paleontological Society, in tenth annual meeting assembled: Two formal meetings of the Council have been held during the year— one at Pittsburgh, following the ninth annual meeting, and the second just before the present session. Several members of the Council have met informally at Washington during the year and discussed matters of business, which was concluded with the other Council members by corre­ spondence. The following reports of officers give a resume of the admin­ istration for the tenth year of the Society: S ecreta ry’s R eport To the Council of the Paleontological Society: Meetings.—The proceedings of the ninth annual meeting of the So­ ciety, held at Pittsburgh, Pennsylvania, December 31, 1917, and January 1 and .2, 1918, have been printed in volume 29, pages 119-166, of the COUNCIL REPORT 146 Bulletin of the Geological Society of America, published on March 31, 1918. In addition to the proceedings, five scientific articles, by members of the Society, were published in number 2, of volume 29, and other articles are contained in number 4 of the same Bulletin. In spite of the war conditions, the number of publications of the Society are therefore above the average. The announcement that the tenth annual meeting would be held at Baltimore, in affiliation with the Geological Society of America, was de­ layed until late in the year, due to circumstances over which the Council had no control. In March it was voted by the Council that in view of the increased membership and business of the Society and the increasing, cost of serv­ ice, a grant of $25 per annum should be made to the Treasurer for ex­ penses in connection with his office. Membership.—The Society has lost three of its charter members by death during the year—Prof. S. W. Williston, Prof. H. S. Williams, and Dr. Charles E. Eastman. We have also lost by death Prof. George W. Harper, well known educator and geologist, of Cincinnati, Ohio. Nine new members were elected to the Society at the ninth annual meeting, and four of our members were elected to Fellowship in the Geological Society of America at the election just concluded. The result of the changes of the past year leaves the total membership at the end of 1918 as 189. Pacific Coast Section.—Because of general conditions in the spring of 1918, it was found inadvisable to hold a meeting of the Pacific Coast Section for this year. Bespectfully submitted, E. S. Bassler, Secretary. Washington, D. C., December 26, 1918. T r e a su r e r 's R epo r t To the Council of the Paleontological Society: The Treasurer begs to submit the following report of the finances of the Society for the fiscal year ending December 13, 1918: r e c e ip t s Cash on hand December 19, 1917................................................ $639.37 Membership fees (1916)................................................................ 6.00 Membership fees (1917)................................................................ 12.00 Membership fees (1918)................................................................ 237.10 Interest, Connecticut Savings Bank............................................ 18.97 ----------- $913.44 X—Bull. Geol. Soc. Am., Vol. 30, 1918 146 PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY EXPENDITURES Treasurer’s office: Postage .................................................................................... $5.00 Secretary’s office: Secretary’s allowance (1917)................................. $50.00 Clerical help for 1916.............................................. 25.00 Clerical help for 1917.............................................. 25.00 Stationery and printing.......................................... 63.74 163.74 Geological Society of America: For printing separates........................................................... 122.32 ----------- $291.06 Balance on hand December 13, 1918...................................... $622.38 Net decrease in funds.................................................................................... $16.99 Outstanding dues (1917), 3......................................................... $9.00 Outstanding dues (1918), 12....................................................... 36.00 ----------- 45.00 Respectfully submitted, R ichard S. L ull, Treasurer. N ew H aven, Co nnecticut,