Biological Supplies and Advanced Text Books new and secondhand. OPPOSITE THE UNIVERSITY ENTRANCE. COLUMBUS, OHIO. The Bucher Engraving Co., COLUMBUS, OHIO Scientific Illustrations given extremely careful attention by highly skilled artisans using the most modern equipment DIE STAMPING. PLATE AND LETTER PRESS PRINTING. _SPAHR & GLENN,_ _PRINTERS and PUBLISHERS_. 50 EAST BROAD STREET. COLUMBUS, OHIO. The Ohio State University COLUMBUS WILLIAM OXLEY THOMPSON, President. Ten Colleges and a Graduate School College of Agriculture College of Arts, Philosophy and Science College of Education College of Engineering College of Homeopathic Medicine College of Law College of Medicine College of Dentistry College of Pharmacy College of Veterinary Medicine Graduate School Summer Session (Eight weeks) For general information, catalogue, or special bulletin describing each college, with fees and announcement of courses. Address: L. E. WOLFE, Secretary Entrance Board, THE OHIO STATE UNIVERSITY End of the Project Gutenberg EBook of The Ohio Journal of Science, Vol. XVI., No. 2 (December, 1915) by Various