[. I70 ] 



hence vitriolic acid, which at 60* is 1,7005 gains or lofes 0,00036 

 nearly for every degree between 60° and 70", and 0,00051 by 

 every degree between 60* and 50*^. 



Laftly, vitriolic acid 1,3888 at - 60® 



Becomes ^ 53845 at - 70 '^ 



1,3866 at - 65^ 



1,3898 at - 55° 



1,3926 at - 49' 



hence vitriolic acid, which at 60" is 1,3888 gains or lofes 0,00043 

 nearly by every degree between 60® and 70", and 0,00034, nearly by 

 every degree between 490 and 60", between 49' and 50", I per- 

 ceived no difference. 



Of the Alteration of Denfity from Difference of Temperature in 



Nitrous Acid. 



Nitrous acid, which was 1,4279 at - 60*^ 



Became - - 1,4178 at - 70° 



1,4225 at - 65« 



1,4304 



\ 



