Produced by Larry B. Harrison, Paul Marshall and the Online Distributed Proofreading Team at http://www.pgdp.net Transcriber's Notes: Underscores "_" before and after a word or phrase indicate _italics_ in the original text. A single underscore designates a subscript. Equal signs "=" before and after a word or phrase indicate =bold= in the original text. Carat symbol "^" designates a superscript. Small capitals have been converted to SOLID capitals. Illustrations have been moved so they do not break up paragraphs. Typographical errors have been silently corrected but other variations in spelling and punctuation remain unaltered. DECEMBER, Volume XVI. 1915 Number 2. The Ohio Journal of Science (Continuation of The Ohio Naturalist) Official Organ of the OHIO STATE UNIVERSITY SCIENTIFIC SOCIETY and of the OHIO ACADEMY OF SCIENCE COLUMBUS, OHIO Annual Subscription Price, $2.00 Single Number, 30 Cents Entered at the Post-Office at Columbus, Ohio, as Second-Class Matter. THE OHIO JOURNAL OF SCIENCE PUBLISHED BY THE Ohio State University Scientific Society Issued Monthly during the Academic Year, from November to June (eight numbers). OFFICIAL ORGAN OF THE OHIO ACADEMY OF SCIENCE Subscription Price: $2.00 per Year, payable in advance; to Foreign Countries, $2.50. Single Copies, 30 Cents. Editor, JOHN H. SCHAFFNER Associate Editor, JAMES S. HINE Associate Editor, FREDERICK W. IVES EDITORIAL BOARD