SMITHSONIAN MISCELLANEOUS COLLECTIONS 



PART OF VOLUME XLVl 



Ibobokins jFunb 



RESEARCHES 



ON THE ATTAINMENT OF 



VERY LOW TEMPERATURES 



BY 



MORRIS W. TRAVERS, D.Sc. 



Assistant Professor of Chemistry, and Fellow of University College, 

 London, England 



PART 



(No. 1441) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



1904 



