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XIV. ExtraB of a Letter from Simon Pe- 
ter Pallas, M D. of Eerlin, to Mr. Ema- 
nuel Mendez da Coda, Librarian to the 
Royal Society , relating to the State of the 
State of the Cold there lafl Winter , dated 
Feb. i 2, 1763. 
Read March 3, TT T E have had great frofls here, 
VV as indeed all over Germany. 
I have obferved myfelf, on the twenty-feventh of 
December of lafl year, a little after feven o’clock 
in the morning, the Cold to have been fo excef- 
live, that the mercury in the thermometer of 
Fahrenheit flood at four degrees under o, which 
is fifteen degrees under o of Reaumur’s Scale, 
than which the Cold in 1740 -was but very little 
more intenfe. Mr. Euler, junior, obferved the fame 
day the thermometer at the fame degree: about 
eight and at nine of the clock of that day, the mer- 
cury in the barometer flood at the height of 30" i" r 
the like of which never had been obferved at Berlin 
before. 1 
XV. An 
