extraordinary Degree of Cold at Glafgow. 473 
at both ends immediately adjoining to the library, and 
to the houfe in the new court: for thefe bodies from 
their great bulk muft have been but very little cooled in 
the courfe of the night. Wherever the air feems to 
have got the better in this ftruggle, as at the angles of 
the bars, which evidently muft be the parts the fooneft 
cooled, there we find that the hoar-froft was depofited, 
but no where elfe. 
Several other inftances were found quite of the fame 
kind with that of the rail. Among the reft, a figure of an 
■ ' 
unicorn in ftone, which ftands within the college, had 
refilled the attacks of the air all to the tip of his horn, 
which accordingly was the only part diftinguifhed by a 
patch of hoar-froft. Befides this kind of hoar-froft 
which joined itfelf to bodies by a regular arrangement, 
there was fome of a different fort found upon the upper- 
moft furface of fuch bodies as were fully expofed to the 
open air. But this always lay fcattered like very thin 
flakes of meal, or hair-powder, and was found to proceed 
from minute parts, moftly columnar, previoufly formed 
in the air, falling down by their own gravity. 
