512 
PHILOSOPHICAL SOCIETY OP WASHINGTON. 
American Journal of Science. 8°, New Haven, 1892, Dec., 3d 
series, vol. 44, no. 264, pp. 469-482.] 
Mr. T. Russell, on The relation of rainfall to river rise. [Pub¬ 
lished in a book entitled Weather and methods of forecasting. 
8°, New York, Macmillan & Co., 1895.] 
Mr. William Harkness, on Flexure of telescope tubes. [Not 
published. Is expected to appear hereafter in the publications 
of the United States Naval Observatory.] 
Remarks were made by Messrs. Woodward, Green, and 
Harkness. 
393d Meeting. November 12, 1892* 
President Gilbert in the chair. 
Twenty-six members and guests present. 
Mr. J. P. Iddings read a paper on The geology of Crazy moun¬ 
tains. [Not published.] 
It was discussed by Messrs. Turner, Walcott, Cross, Gil¬ 
bert, Diller, and Iddings. 
Mr. H. W. Turner read a paper on The lavas of Mount In¬ 
galls. [Published in the American Journal of Science. 8°, New 
Haven, 1892, Dec., 3d series, vol. 44, no. 264, pp. 455-459.] 
It was discussed by Messrs. Iddings, Diller, Gilbert, and 
Turner. 
Mr. W. IP. Dall read a paper entitled Determination of the 
dates of publication of Conrad’s “ Fossils of the Tertiary forma¬ 
tion.” [Published in this volume, pp. 215-240.] 
394th Meeting. November 26, 1892. 
President Gilbert in the chair. 
Thirty-five members and guests present. 
Mr. B. E. Fernow read a paper entitled Recent contributions 
toward the discussion of forest influences. [Not published. The 
