UtMARY 
OF THE 
UNIVERSITY OF ILLINOIS 
25 SEP1914 
MEASURES OF PROPER MOTION STARS 
MADE WITH THE 
REFRACTOR OF THE YERKES OBSERVATORY 
IN THE YEARS 1907 TO 1912 
BY 
S. W. BURNHAM 
WASHINGTON, D. C. 
Published by the Carnegie Institution of Washington 
1913 
