SMITHSONIAN MISCELLANEOUS COLLECTIONS 



PART OF VOLUME XLIX 



Ibobokins jfunb 



RESEARCHES ON THE ATTAINMENT 

 OF VERY LOW TEMPERATURES 



PART II.— FURTHER NOTES ON THE SELF INTEN- 

 SIVE PROCESS FOR LIQUEFYING GASES 



BY 



MORRIS W. TRAVERS, D.Sc, F.R.S. 



Professor of Chemistry in University College, Bristol, England 



AND IN PART BY 



A. G. C. GWYER, B.SC, AND F. L. USHER 



%S^ 



(No. 1652) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 

 1906 



