( 597 ) 



— =z 0.443, (lerivod Iroiu tlie dala of this ('oiniu. IV, we find 

 snp|)()>^iii,i2,- thai tbnnnla (3) were to hold as far as tlie \ahie .r = 0.1047 : 



Tlie a^i>reeinent with the \aliie found in § 2 (hetweeji 0M5 C. 

 and iVMl C.) is better than might be reasonably expected with the 

 suppositions made. The circnmstance that for the second mixture 

 1°.20 C. was found for this shows that for this value of .t terms 

 with .r etc. have already a preponderating intluence. 



Physics. — ''Hii.stci'ctlc orlentatic-phmoiiH-ih/." By Prof. H. E. .1. G. 

 DU Bois. (Communicated by Prof .1. D. van dkh Waals). 



(This paper will not he published in these Proceedings). 



(February 25, 1904). 



