477 



Physics. — '' hothermah of inonatomic nuhatanca.^ and their hludri/ 

 mktwes. XV. The vapoitr pressure of solid and liquid argon, 

 from the critical point down to — 206°." By C. A. Crommelin. 

 (Comiriunicated by Prof. H. Kamerlingh Onnes). Comm. N". 

 138c* from the physical Ijaboratory at Leiden. 



§ 1. In this paper the coin[)leted results are given of all the 

 observations that I have so far made concerning the vaponr pressure 



