409 



Physics. — ^'hothenaab of diatomic substances and their hinanj 

 mixtures. XV. Vapour pressures of oxygen and critical point 

 of o,ri/(/('it. and nitrogen". Bj Prof. H. Kameri.ingh Onnes, 

 C!. Dorsman and G. Holst. iiV/'aia to Communication N°. 145/^ 

 from the Pliysical I.al)Oiaton- at Leiden, Jan. 1914). 



In tlie Proceedings of the Meeting of .human 30, 1915 p. 952 

 table I is to be read : 



p. 953 in table II 



TABLE II. 



Critical point of oxygen. 



,= -11 8°.82 C. T^=l 54°.27 K. /)^ ^ 49.7 1 3 atm. 



(September 8, 1815). 



