18 Vapour-density of Bromine at High Temperatures. 



T 

 1 . 



in 

 u. 



7- 



oUU 



1 V Ol 



1 QQOn 



oOU 



i V ttO 



ODOU 



(\f\(\ 



yuu 



Q.Q Q 



/ o oo 



175U 



950 



78-01 



620 



1000 



76-94 



264 



1050 



75-26 



110 



The above values of T and D were read from the curve. 



Series III, V, and VII show the effect of varying the pressure. The 

 results of series VII form a smooth curve, vapour-density being plotted 

 against pressure (Curve II), but the dissociation-constant calculated 

 from them is irregular. 



V-d. 



































































1 _j 

















mmp 



'300 TOO 600 500 -400 300 aoo too o 

 V-d of Bromine under i/aryin^ pressure. Temp. ip4-0. 



Curve II. 



The authors regret that the apparatus available did not enable them 

 to extend the experiments to higher temperatures than those em- 

 ployed. In conclusion they wish to thank the Government Grant 

 Committee of the Eoyal Society for their assistance. 



Addendum. 



Decemher 8. — It may be interesting to add the results obtained by 

 other observers, and referred to in our previous paper. 



