PROCEEDINGS. 
507 
386th Meeting (Special). April 6, 1892. 
President Gilbert in the chair. 
Twenty members and guests present. 
Mr. Thomas Russell read a paper on River stage predictions. 
[Published in volume entitled Weather and methods of forecast¬ 
ing. 8°, New York, Macmillan & Co., 1895; also in the Ameri¬ 
can Meteorological Journal. 8°, Boston, 1892, June, vol. 9, 
no. 2, pp. 47-58.] 
It was discussed by Messrs. Harrington, Newell, and Gil¬ 
bert. 
Mr. J. P. Iddings read a paper entitled A study of a dissected 
volcano. [Published in the Journal of Geology. 8°, Chicago, 
1893, Sept.-Oct., vol. 1, no. 6, pp. 606-611.] 
It was discussed by Messrs. Van Hise and Gilbert. 
Mr. Waldemar Lindgren read a paper on the Silver deposits 
of Lake valley, New Mexico. 
387th Meeting. April 9, 1892. 
President Gilbert in the chair. 
Thirty members and guests present. 
Announcement was made of the election to and qualification 
for membership of Frederick Haynes Newell. 
Mr. W J McGee read a paper entitled Illustrations of isostatic 
pressure. [Not published.] 
Mr. Bailey Willis read a paper entitled Illustrations of Ap¬ 
palachian structure. [Published in a paper entitled The me¬ 
chanics of Appalachian structure, which appeared in the Thir¬ 
teenth annual report of the Director of the U. S. Geological 
Survey. 8°, Washington, 1893, part 2, pp. 211-282.] 
It was illustrated by lantern views, and was discussed by 
Messrs. Walcott, Woodward, and McGee. 
