[ 44 ] 
to the regifter of my thermometer, in the annexed 
paper, the ftate of it on the ;th, on which day, tho’ 
the wind blew very ftrong from the eaft, the cold ex- 
ceeded the degree of freezing-point but very littlei 
borne allowance is indeed to be made for the thicknels 
oi the attnolphere. 
Q loweft ftate of my thermometer was on the 
oth day, at /h. a.m. when it had fallen to ly-L- 
though it appears to have been unufually cold 
throughout the day, by the regifter. 
It is probable, that the crilis was at or about the 
Ume of your midnight oblervation ; for the wind 
ihifted to the S. E. and the thermometer indicated 
a confiderable abatement of the cold feveral hours 
before day. As you have mentioned the difference 
between the height of the thermometer placed 
againft the houfe, and that of one in the middle of 
your garden, I would inform you, that I have for- 
merly found about the fame difference between them 
when I have made the fame trial. 
A thermometer within my chamber, near another 
placed on the outfide of the window, continued 
falling till the ninth day j when at 6h. .7. w. it flood 
at 2 y I . At 8 h. p. m. when that without was at ? 8 
this within was no more than 28, at which time wa- 
.ter was congealed in my chamber, and it froze all 
night, and part of the next day, in the fame ; tho’ 
the window was covered thick with fmall drops of 
water on the outfide, even at 8 h. p. m. fo that here 
was a great increafe of cold within, while there was 
a very conliderable abatement of it abroad. So little 
dependance can we have on the indications of the 
temperature of the air by thermometers placed in a 
houfe. 
I only 
