The University of Chicago Science Series, 

 established by the Trustees of the University, 

 owes its origin to a feeling 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 discussions generally appearing in 

 technical journals in that they will present the 

 complete results of an experiment or series of 

 investigations which previously have appeared 

 only in scattered 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. 



