PROCEEDINGS. 
463 
Mr. C. K. We ad read a paper on Mediaeval church organs. 
[Published in full in Music, Chicago, February, 1897; also in 
Proceedings of the American Association for the Advancement 
of Science, 1899, pp. 96-102.] 
467th Meeting. April 3, 1897. 
President Baker in the chair. 
Eighteen members and guests present. 
Announcement was made of the election to membership of 
Mr. Paul Brockett and Mr. L. Eugene Emerson. 
Announcement was made of the arrangement between this 
Society and the Chemical Society of Washington, in accordance 
with which members of either Society may, upon giving notice 
to the Secretary of the other, receive the regular notices of its 
meetings, and be welcome to attend them. 
Mr. Gilbert Thompson read a paper on The Washington 
monument as a sun dial. [Not published.] 
It was illustrated by diagrams and discussed bv Messrs. 
Baker and Kummell. 
Mr. Charles H. Kummell presented a communication entitled 
Discussion of merit contests in college examinations by the 
method of least squares. 
It was discussed by Messrs. Bigelow, Gore, Baker, and the 
author. 
468th Meeting. April 17, 1897. 
President Baker in the chair. 
Fifty-one members and guests present. 
Announcement was made of the election to membership of 
Mr. Frederick Haynes Newell. 
Mr. B. E. Fernow read a paper on The policy of forest reser¬ 
vations. [The substance of this paper was published in a sepa¬ 
rate pamphlet by the American Forestry Association in 1895.] 
