Experiments on freezing Mixtures* 245 
All thefe bottles were numbered with a diamond ; and as I 
fhall fometimes diftinguifh them by thefe numbers, and as it 
may be of ufe to thofe who may confult the original, 1 have 
added the following lift of thefe bottles, with their contents. 
Weight of 
Specific 
N° 
Liquors mentioned in Art. 3. 
marble which 
gravity at 
rhey diflolve. 
6o°of heat. 
l68 
Spirit of nitre, ..... • • . . 
Dephlogifticated fpirit of nitre, .... 
>582 
^4371 
27 
>53 
1,4040 
IO3 
Diluted oil of vitriol, ... .... 
*654 
i >5596 
28 
Equal weights of N° 168. and N° 103. . 
8 
Very highly re&ified fpirit of wine, « . • 
- — - 
5^195 
: Liquors mentioned in Art. 2. 
1 5 1 
.Strong oil of vitriol, ...... . 
,98 
1,8437 
142 
Spirit of nitre, . ........ 
>525 
1 >4043 
I 1 39 
Some of the fame diluted with twice its weight 1 
of water, .......... J 
141 
•i 43 
Dephlogifticated fpirit of nitre, .... 
Some of the fame fpirit of wine as in N° 8.\ 
>53 
i 9 4033 
diluted with if its weight of water, B J 
■- ~ * 
: 72 
171 
Diluted oil of vitriol for comparing the thermometers, 
Oii of vitriol of about the ufual ftrength, but tht 
,629 
- - 
exa£t ftrength not known, intended to refreft 
the former when too weak. 
4. ProfeiTor Braun fays, that by mixtures of fnow and 
fpirit of nitre he funk thermometers filled with oil of faffafras, 
and fome other effential oils, to -- ioo° or 124 0 ; and that, by 
the fame means, he funk thermometers filled with the higheft 
rectified fpirit of wine to “*148% Though there feemed great 
reafon to think, from Mr. Hutchins’s experiments, that there 
muft be fome miftake in this ; yet, as it was poffible that the 
effential oils, and even fpirit of wine of a ftrength much different 
from that with which Mr. Hutchins’s thermometers were 
filled r might follow a confiderably different progreffion in their 
contractions 
