' V. I ^ ) j. ,v ( K;V. •. , v 
extraordinary Degree of Cold at Glafgow. 461 
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!I P 1 R I'M E N'T! IV. , , , .... 
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This night, inftead of blowing i$n<, the fnow, ^ we 
fanned it by means of a flaeet of -brown paper. fitted to 
the end of a long {lender flack.. This apparatus was 
previoufly cooled by lying on the fnow, and in fanning 
we took care to hand to leeward of the thermometer. 
The effedt was, that the mercury xofe nearly to the fame 
degree given by the thermometer in air at the fame 
time. 
EXPERIMENT V. 
At three quarters paft one o’clock, when the thermo- 
meter on the fnow pointed to + 3 0 , it was fcreened by 
two fheets of brown paper fet up on their edges,: and fo 
inclined againft one another as to ftand. The paper had 
been previoufly cooled by lying on the fnow. At a 
quarter paft two o’clock the thermometer thus flickered 
pointed to +9 0 . This experiment was afterwards re- 
peated with the fame event. 
P p p a 
.£ X- 
