PROCEEDINGS. 
377 
one of the bronze statues in the city, due to expansion by heat. 
This led to a general discussion on expansion in modem struc¬ 
tures, participated in by Messrs. Hayford, Marvin, Updegraff, 
We ad, and Winston. 
Mr. 0. H. Tittmann then read a Biographical notice of Mr. 
Charles A. Schott, for many years Chief of the Computing Divis¬ 
ion of the Coast and Geodetic Survey. [Published in this vol¬ 
ume, p. 312.] 
Mr. R. A. Fessenden presented a report on Progress in practical 
and experimental electricity. It gave a rapid sketch of the con¬ 
dition of all the great branches of the subject. In the discussion 
that followed Messrs. Bliss, Marvin, Maynard, Radelfinger, 
and Strother took part. [Published in this volume, p. 167.] 
539th Meeting. October 26, 1901. 
Past President Dall in the chair. 
Twenty-six persons present. 
Mr. Wead presented a new graphical method for the Quadra¬ 
ture of the circle. Mr. Baker and Mr. Hinton added other 
methods. [Not published.] 
Mr. M. Baker read a paper on the Dictionary of Alaskan 
names, soon to be published by the Geological Survey. It will 
contain about 6,500 adopted names, 3,000 obsolete names and 
cross-references, and 60 pages devoted to authorities, with brief 
accounts of explorers. [The Dictionary is U. S. Geol. Survey 
Bull. Series F, No. 187,'8 vo, pp. 1-446, 1901.] 
Mr. Dall spoke appreciatively of the work. 
Mr. C. H. Hinton, of the Nautical Almanac Office, then read 
by invitation part of a paper on A fourth dimension in space de¬ 
manded by electrical phenomena. So far as presented, it ap¬ 
peared to be an extension to 4-space of the principles of qua¬ 
ternions familiar in 3-space. [Published in this volume, p. 
179.] 
