^tiU'5' 
PHILOSOPHICAL SOCIETY OF WASHINGTON 
BULLETIN. Vol. XV, po. 27-56 
THE PROGRESS OF SCIENCE 
AS ILLUSTRATED BY THE 
DEVELOPMENT OF METEOROLOGY 
ANNUAL PRESIDENTIAL ADDRESS 
CLEVELAND ABBE 
Read before the Philosophical Society of YV ashington 
December 8, 1906 
WASHINGTON 
PUBLISHED BY THE SOCIETY 
July, 1907 
