greeof Cold, as hath been, fmcQChriftmaihegm^ and conti- 
nues every Kight and Morning to this very day of becemb, 29 % 
though the extremeft was , as hath been faid, on Decemb, 16, 
To note this degree of Cold more particularly , I muft acquaint 
you, that in my ftanch Thermometer on the faid i6 of De- 
cemkr^ the Liquor was at three inches and an half. This morn- 
ing ( Decemh. 29.) and one or two other mornings it was at three 
inches and three qmrters, Moft other times of thefe Cold days. 
Morning and Evening, it was at the height of /p/^r inches, in 
ordinary Brifk Frofts it is at Jcvcn inches. Yet here I 
muft obferve, that fometimes the Froft diffolves, w en it 
is at the 7th figure^ and fometimes I find it at the 8th figure m 
a fmart iroft : Whether the Winds, which come not to the 
Thermometer, may caufe this difference, orvvhatelfe, I know 
not. But to proceed, 'tis warm Af^j-weacher, when 'tis at the 
loth figure, and 'tis not much above the 12 th figure in t^^e hot- 
teft weather of ^me, ^ulj.^ and Augtifi. To compare with for*^ 
mer Winters , the loweft mark is upon Decemh, 17. 166$ 5 and 
then it was at the height of five inches and an ^4//, And in 
Decemh. ^1. 1666^ it was about the fame height; and there I 
find thefe words 5 Very c&ld^ above all of this jear^ hitherto. Nei» 
t her do I find any note fo low, till this prefentj, which is ccnfi* 
dcrably lower. 
I think it remarkable, that the 7th Inch;, and fometimes the 
8th in my Thermometer fliould abide Freezing, and the Frofi 
increafcj till the Liquor descended inches and yet^that it 
ihould not afcend from the 8th inch more, than4^ inches in 
our hocteft Summer, being hung in the fame place within 18 
inches of the Glafs-window,, facing the iV^r/^^-n^e/?, and in a lit- 
tle Writing-room, in the fecond row of Buildings, But now I 
am ftrongly perfwaded, that the degrees of Heat and Cold are 
not exa&ly indicated by the inclofed Spirit of Wine : For, when 
the Snow melted, and the Froft was firft dinolved without Sun- 
fliine, the Liquor was not above the height of five inches and 
an half Poflibly it retains fome part of the Cold a while after 
the ambient Air becomes more tepid. 
Ppppp 
