442 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
440th Meeting. October 26, 1895. 
President Dall in the chair. 
Twenty-four members and guests present. 
Announcement was made of the death of General Orlando M. 
Poe, on October 2, 1895, and of Prof. C. V. Riley, on September 
14, 1895. 
Mr. Cleveland Abbe read a paper on Cloud formation and 
cloud nomenclature. [Not published.] 
It was discussed by Mr. Littlehales and the author. 
Mr. E. D. Preston read a paper, written by Mr. Adolph Lxn- 
denkohl, on Results of density observations made between 1874 
and 1878 in the Gulf Stream and in the Gulf of Mexico. [Pub¬ 
lished in U. S. Coast and Geodetic Survey Report for 1895, Ap¬ 
pendix no. 6. An abstract was published in Petermann’s Mit- 
theilungen, 1896, heft 2, and also in Science, 1896, February 21.] 
It was illustrated by maps and discussed by Messrs. Abbe, 
Littlehales, Bigelow, Preston, Dall, and the author. 
Mr. Frank H. Bigelow read a paper on Distribution of the 
sun spots on different meridians. [Published in U. S. Weather 
Bureau, Bulletin no. 21, chapter vi, 1898, pp. 140-146.] 
It was discussed by Messrs. Powell, Paul, and the author. 
441st Meeting. November 9, 1895. 
President Dall in the chair. 
Thirty members and guests present. 
Mr. J. Howard Gore read a paper on International bibliog¬ 
raphy of mathematics. 
It was discussed by Messrs. Martin, Mann, Abbe, Wead, and 
the author. 
Mr. J. W. Powell read a paper on Matter. [For substance 
of this paper see a voluue by J. W. Powell entitled Truth and 
