Annual report . ake, 44Whitrieldella nucleolata, 59Williams, George H., cited, 48 Zaphrentis, 62 University oi the State ol New York Bulletin Entered as second-class matter August 2, 1913, at the Post Office at Albany, N. Y.,under the act of August 24, 1012 Published fortnightly- No. 573 ALBANY, N. Y. August 15, 1914 New York State Museum John M. Clarke, DirectorMuseum Bulletin 172 GEOLOGY OF THE ATTICA-DEPEWQUADRANGLES BYD. D. LUTHER PAGE Introduction 5 Description of formation 7 Siluric 7 PAGE Devonic 9 Bibliography 30 Index 31 New York State Education Department Science Division, March y, i
Annual report . ake, 44Whitrieldella nucleolata, 59Williams, George H., cited, 48 Zaphrentis, 62 University oi the State ol New York Bulletin Entered as second-class matter August 2, 1913, at the Post Office at Albany, N. Y.,under the act of August 24, 1012 Published fortnightly- No. 573 ALBANY, N. Y. August 15, 1914 New York State Museum John M. Clarke, DirectorMuseum Bulletin 172 GEOLOGY OF THE ATTICA-DEPEWQUADRANGLES BYD. D. LUTHER PAGE Introduction 5 Description of formation 7 Siluric 7 PAGE Devonic 9 Bibliography 30 Index 31 New York State Education Department Science Division, March y, ip 13Hon. Andrew S. Draper Commissioner of EducationSir: I have the honor to submit herewith a manuscript report,with maps, on the Geology of the Attica and Depew Quadrangles,and to recommend the publication of this report as a bulletin ofthe State Museum. Very respectfully John M. Clarke Director STATE OF NEW YORKEDUCATION DEPARTMENTcommissioners ROOMApproved for publication this the 17th day of March 1913. Commissioner of Education University of the State oi New York Bulletin Entered as second-class matter August 2, 1913, at the Post Office at Albany, N. Y., under the act of August 12, 1912 Published fortnightlyNo. 573 ALBANY, N. Y. August 15, 1914 New York State Museum John M. Clarke, DirectorMuseum Bulletin 172 GEOLOGY OF THE ATTICA AND DEPEWQUADRANGLES BY D. D. LUTHER The area embraced within these quadrangles lies between thelines of 420 45 and 430 north latitude, and 780 15 and 780 45west longitude and contains 455 square miles. It is situated just where the sloping front of the great Alleganyplateau begins to bend from a generally east and west line to adirection nearly southwest and parallel to the southern shore ofLake Erie. The point of lowest altitude is in the northwest corner of theDepew quadrangle where it is 585 feet above sea level, or 338 feetabove Lake Ontario and 12 feet higher than Lake Erie, while thecrest of the ridge west of Varysburg reaches, on th
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