618 Meteorological Obfervations. 
I next made the experiment. on a large 
fcale, in the following’ manner;—a tall glafs 
jar which held near half a gallon, was filled 
with broken pieces of ice, water was 
poured into it ‘to .expell the air from the 
interftices, the jar was then carefully inverted 
in a veffel of water, and the ice: fuffered 
to thaw, but.no air was extricated excepting 
a fmall bubble not the fize of a pea, which 
was probably confined between the particles 
of the ice, ‘as’ we generally fee it. As the 
ice melted, I introduced more in pieces, by 
juft raifing up the edge of the jar, but not 
above the water. The pieces of ice being 
fpecifically' lighter than the water, arofe to 
the upper part of the jar. In this manner 
I introduced on the whole ‘not ‘lefs than iten 
pent of ice, yet no air was extricated. 
‘From the refult of thefe ebeteilen tania “may 
we ‘not conclude, that we are yet ignorant 
of the ‘nature’ of the ‘* Great Bear or Dragon’ 
of the north, ‘which at times fuddenly drinks 
up, and as fuddenly -at other times vomits 
out one feet part of the ee 
APPENDIX. ~ 
