T HE UNIVERSITY OF CHICAGO 
SCIENCE SERIES, established by the 
Trustees of theUniversity, owes its origin 
to a belief that there should be a medium of 
publication occupying a position between the 
technical journals with their short articles and 
the elaborate treatises which attempt to cover 
several or all aspects of a wide field. The 
volumes of the series will differ from the dis 
cussions generally appearing in technical jour 
nals in that they will present the complete re 
sults of an experimenter series of investigations 
which previously have appeared only in scat 
tered articles, if published at all. On the 
other hand, they will differ from detailed 
treatises by confining themselves to specific 
problems of current interest, and in presenting 
the subject in as summary a manner and with 
as little technical detail as is consistent with 
sound method. They will be written not only 
for the specialist but for the educated layman.