the Point of Mercurial Congelation , 
Experiment IV. made January 1782. 
Tim e per 
watch. 
Thermom. 
below 0. 
1 
Appara- 
tus. 
Spirit 
Thermom. 
Remarks and Occurrences. 
1 
» 
h. , 
870 
35 
30 
— 
Put the inftruments into a tumbler of fnow. 
8 9 45 
35 a 
27 
— 
8 10 40 
— 
— 
— 
Added the fpirit of nitre. 
8 11 0 
42 
42 
| Added more fnow to increafe the quantity of the 
i mixture. 
8 12 30 
— 
— 
— 
Added more fpirit. 
* 
8 i 3 , s 
68 
42 
— 
8 J 3 35 
78 
42 
— 
8140 
92 
42 
— 
8 14 15 
100 
42 
— 
8 14 30 
108 
42 
— 
8 14 45 
1 16 
42 
— 
8 15 0 
126 
42 
— 
8 15 15 
i 34 
42 
— 
8 15 30 
140 
42 
— 
8 i 5 45 
146 
4 1 2 
— 
8 16 20 
160 
4 il 
— 
• 
8 16 30 
166 
4 ii 
— : 
j 
8 16 45 
171 
4 il 
— 
8 i 7 15 
182 
4 il 
— 
- 
8 17 45 
191 
4 if 
— 
8 18 0 
196 
4 i| 
— 
8 18 15 
202 
4 1 2 
— 
8 18 30 
208 
4 1 ! 
— 1 
8 ,8 45 
212 
41 1 
— j 
8 19 30 
232 
77 
— I 
The defcent in the apparatus therm, very quick. 
8 19 40 
240 
77 
— 1 
t 
8 20 30 
258 
771 
— I 
8 20 40 
262 
77 1 
— I 
i 
4 
821 0 
270 
771 
— 
8 21 15 
278 
77 ! 
— 
8 21 45 
280 
77 ! 
— ! 
8 22 0 
286 
77 ! 
1 
8 22 30 
293 
77 1 
— 
t 
8 22 35 
298 
77 ! 
~ 
.. 
8 23 0 
3°2 
7 8 
— 
8 2 3 151305 
7 8 
— 1 
2 
Experiment 
