The Onio Journal of Science 



Vol. XXI NOVEMBER, 1920 No. 1 



REPORT OF THE THIRTIETH ANNUAL MEETING OF 

 THE OHIO ACADEMY OF SCIENCE. 



Columbus, May 14th and 15th, 1920. 



The Thirtieth Annual Meeting of the Ohio Academy of 

 Science was held at Ohio State University, Columbus, Ohio, 

 May 14 and 15, 1920, under the presidency of Professor 

 Frederick C. Blake. Sixty-nine members were registered as in 

 attendance; thirty new members were elected. 



General Program. 



Friday, May 14. 



11:00 A. M. — Business Meeting. 

 12:30 p. M. — Luncheon. 



2 :00 p. M. — Reading of Papers in General Session. 



3:30 P. M.— Lecture by Professor Dayton C. Miller, Case School of 

 Applied Science, Cleveland, on "Photographing Sound 

 Waves from Large Guns and Projectiles." 



4:30 p. M. — Reading of Papers in Sectional Meetings. 



6:00 p. M. — Dinner. 



7:30 p. M. — Address by the President of the Academy, Professor F. C. 

 Blake, Ohio State University, Columbus, on "The 

 Einstein Theory of Relativity and Gravitation." 



8:30 p. M. — Demonstrations and Social Gathering. 



Saturday, May 15. 



9:00 A. M. — ^Adjourned Business Meeting. 

 10:00 A. M. — Reading of Papers in Sectional Meetings. 



