BULLETIN 
OF THE 
Scientific Laboratories 
OF . 
DENISON UNIVERSITY 
Volume XIV 
Articles 11-16 
Pages 189-287 
EDITED BY 
FRANK CARNEY 
Perijianent Secretary Denison Scientific Association 
11. 
12 . 
13 - 
^ 5 - 
A Spectrometer for Electromagnetic Radiation. By A. D. Cole...... 189 
The Development of the Idea of Glacial Erosion in America. By F. 
Carney , i ■ .... . ..... . . . • k- • • • • • • •> • • • • • • • • 199 
Preliminary Notes on Cincinnatian Fossils. By Aug. F. Foerste. . . . . . .209 
Notes on Spondylomorum Quaternarium Ehrenb. By M. E. Stickney. . .231 
The Reaction to Tactile Stimuli and the Development of the Swimming 
Movement in Embryos of Diemyctylus torsus, Eschscholtz. By G. E. 
Coghill . V ...... . ..... . ..... . . . ... . .239 
The Raised Beaches of the Berea, Cleveland;, and Euclid Sheets, Ohio. 
By F. Carney .... . ...... . s . . . . .. ... . . . . .240 
GRANVILLE, OHIO, JUNE, 1909 
