REPORT OF FIFTEENTH ANNUAL MEETING 329 



Schaffner as secretary in the absence nf the regular president and 



secretary. The following program \vas given. 



Edward Ortox, Jr. — '•Report on t^'^. T^lconomic Work of the Ohio 



Geological Survey." 



Charles S. Prosser — "Status of Stratis^raj^hical Work in Ohio." 

 C. E. Sherman — "Progress of the Topographical Survey of Ohio." 

 Miss S. S. W^ilson — "Elementary S-ience in the High School." 

 E. P. Durrant — "Amount, Time, "W Purpose in VieM-. in High 



School Biology. 



B. F. Thomas — "Lecture and Demonstration in Light and Color." 



'j B. Walton, Secretary. 

 Gambjer, 0., February 14, 190f^ 



