94 G. J. BURROWS. 



If the values of v s be compared for the concentration 

 A = 4 the results are seen to vary in the same manner as 

 those in Table XX. 



Table XXII. 



cent, in solven 



t. A v 



v s 









•744 



25-44 



•0260 



•760 



30-47 



•0295 



•761 



36-62 



•0323 



•760 



47-11 



•0339 



•752 



58-89 



•0323 



•747 



100-00 





•679 



Results obtained with other solutes are given in the 



following tables. 



Table XXIII. 



Solute — Formamide. Temp. 30° C. 



(a) In ethyl alcohol (d = -780777). 



A 



* 



*>B 



1-8454 



•785604 



•847 



6-1292 



•796280 



•849 



18-5815 



•823708 



•855 



(b) In water-alcohol (44 per cent, alcohol) d = '918665. 



1-7433 -921389 -901 



3-2160 -923652 -900 



4-0509 -924849 -902 



The corresponding determinations in aqueous solutions at 

 30° O. were not made since a complete series of values had 

 already been obtained at both 20° and 25° C. The values 

 of v s for concentrations corresponding to the above are 

 here given for these temperatures, and the values for 30° 

 calculated by assuming that the difference in solution 

 volume for 5° C. is the same between 30° and 25° as it is 

 between 25° and 20° O. 



(c) In water. 

 A v s v s v s 



20° O. 25° O. 30° C. 



1-7251 -847 -856 -865 



4-2770 -848 -856 -865 



17-2736 -854 -860 ' -866 



