546 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
the irreducible case. It being unfinished at 10 o’clock, the hour 
of adjournment, it was assigned to be continued at the next 
meeting. 
67th Meeting. April 27, 1892. 
The Chairman, Mr. Gore, presided. 
Eight members present. 
Mr. Kummell completed the presentation of his paper begun 
at the last meeting. 
Mr. M. H. Doolittle made a communication on Least square 
adjustments. 
Upon this remarks were made by Messrs. Curtis, Woodward, 
and Kummell. 
68th Meeting. November 30, 1892. 
The Chairman presided. 
Twenty-one members and guests present. 
Mr. R. S. Woodward made a communication on The rectifi¬ 
cation of a slightly sinuous curve. 
Remarks were made by Mr. Harkness. 
Mr. F. L. 0. Wadsworth made a communication on The ap¬ 
plication of interference methods to the measurement of base 
lines. 
Remarks were made by Messrs. Woodward and Paul. 
No meetings of the Mathematical Section were held in 1893 
and 1894. 
