246 



Mr. F. D. Brown on the Physical [May 31, 



Fraction II. 



Fraction III. 



No. of 



Temperature 



Volume. 



No. of 



Temperature 



Volume. 



WOS. 



(corrected). 





KJOS. 



(corrected). 





1 



5-0 (ice) 



1-00000 



1 



0-0 (ice) 



1-00000 



3 



14-79 



1-01653 



1 



11-28 



1-01263 



3 



25-81 



1-02933 



2 



15-58 



1-01751 



2 



35-61 



1-04110 



2 



21-84 



1-02475 



2 



39*51 



1-04587 



2 



27 / o 



1*03178 



3 



52-28 



1-06200 



2 



32-64 



1*03756 



3 



57-88 



1-06947 



3 



46-97 



1*05513 



3 



70-14 



1-08633 



3 



55-22 



1*06591 









3 



63-16 



1*07662 









3 



71-87 



1*08865 









4 



79-66 



1*09994 



The two curves drawn by means of these data coincided throughout. 

 The volumes at every ten degrees are as follows : — 



Tempe- 

 rature. 



Volume. 



Tempe- 

 rature. 



Volume. 



Tempe- 

 rature. 



Volume. 



o 







1*00000 



o 



40 



1-04640 







70 



1-08606 



10 



1*01118 



50 



1-05900 



80 



1-10032 



20 



1-02246 



60 



1-07234 



90 



1-11480 



30 



1-03440 











The following are the results obtained when these two fractions were 

 boiled at various pressures : — 



Fraction II. 



Fraction III. 



No. of 



Boiling- 



Pressure in 



No. of 



Boiling- 



Pressure in 



Obs. 



point. 



millims. 



Obs. 



point. 



millims. 



1 



49-32 



191-9 



2 



48*90 



187-9 



1 



52-15 



214*3 



1 



54-43 



232-6 



2 



59-45 



281-3 



3 



55-93 



245-9 



2 



69*55 



400*3 



3 



62-40 



311*2 



1 



73-46 



455*6 



1 



69*63 



399*7 



1 



76*21 



498*4 



1 



72*30 



437*4 



1 



82*17 



603*1 



1 



74*71 



472*8 



1 



86*11 



679-6 



3 



78*13 



530-6 



1 



88*04 



720-3 



1 



80*52 



570*6 



1 



89-81 



760*2 



3 



83*79 



631*9 









1 



87*64 



709-9 









1 



89*66 



754*8 



