10 PHILOSOPHICAL SOCIETY OF WASHINGTON. 
300TH MEETING. Marcu 26, 1887. 
7 
The President in the Chair. 
Seventy-one members and guests present. 
This meeting was held in the Assembly Hall of the Cosmos Club, 
southeast corner of H street and Madison Place, the Club having 
offered the use of its hall as a meeting place for the Society. Pre- 
ceding meetings during this year and during several former years, 
were by the courtesy of the Surgeon General of the United States 
Army, held in the library of the Surgeon General’s Office on the 
east side of 10th and between E and F streets N. W. 
The President briefly alluded to this removal to more commodi- 
ous quarters upon the 300th meeting of the Society as marking an 
epoch in its history. 
Announcement was made of the election to membership of Mr. 
SAMUEL Prerpont LANGLEY and Mr. Harry Kina. 
Mr. H. A. Hazen read a paper upon the 
RELATION BETWEEN WIND VELOCITY AND PRESSURE, 
illustrated by an apparatus resembling that used by him in recent 
experiments at the Smithsonian Institution. 
[This paper appeared in the American Journal of Science, 3d series, 8°, 
New Haven, 1887, October, vol. 34, pp. 241-248. ] 
The paper was discussed by Messrs. BrLLines, WoopWARD, 
HArkKNEsS, Pavt, and the author. 
Mr. BatLtey WILLIS made a communication on 
MT. RAINIER AND ITS GLACIERS, 
illustrated by perspective drawings of Rainier and Shasta, derived 
from contour maps by the method explained at the last meeting. 
The facts brought out by the illustrations and remarks indicate that 
Rainier was a point of intense volcanic activity long since extinct, 
and Shasta one of long continued less violent eruption. Rainier isa 
ruin, Shasta a complete cone. 
