[forge J 
As the fpecific gravity of the nitrous acid varies confiderably 
in different temperatures, to find the connexion which its denfity 
at any temperature between 45° and 70° has with its denfity at 
60°, and_thereby to difcover its proportion of ftandard, I made 
the following experiments : 
——$ 
Degree of | Sp. Gr. of | Sp. Gr. of 
Temperature. A. B. 
a eee 
40° 1,4178 | 1,2320 
65 1,4225 ) 1,2342 
60 1,4279.| 1,2363 
55 1,4304 | 1,2384 
PEO 14336 1,2406 
45 154357 9 12407} 
1ft, Hence we fee that fpirit of nitre, whofe denfity at any 
degree between 45° and 70° inclufively, refembles the corref- 
ponding denfities at the fame temperatures in the column A, 
gains or lofes 0,00107 by every degree between 60° and AG. 
And 0,00057 by every degree between 50° and 60°. 
And 0,00042 by every degree between 45° and 50°. 
ad, Tuar fpirit of nitre, whofe denfity at any degree between 
45° and 70° refembles the correfponding denfities at the fame 
temperature in the column B, gains or lofes 0,00043 by every 
degree between 50° and 70°. 
And 0,00022 by every degree between 45° and 50°. 
¥ 2. 
