Chemistry and Physics. am 
whole, facts seem most strongly to prepossess us in favor of the thin, in 
artificial combustions similar fixed lines beings asta If such is to be 
regarded as the physical condition of the we can no longer pistssony 
it as an immense mass slowly and ‘banguills och in the lapse 
of countless centuries by radiation into space, as so many considerations 
drawn from other branches of science have hitherto led us to sup 
it must be Ae as the seat of chemical year going on upon a 
: a The di lalanes, a new form of Barometer, for weighing atmospheric. te 
fluctuations ; by J. B, ye forme M.D.—Reflection upon the action ofa 
ter said to have been in use for some time e past in the observato- 
which has that portion of the tube not tim- 
the motion of which indicates ad by wae 
= suggested an arran ment which it is believed is — Vy Ww. 
. minute a in the path of the atmosphere may be weighed with 
Let the St at tube be fixed over 2 a with its lower Fein 
freely exposed ; let the platform also support a balance, one arm age ich 
eS aer redo Le ais on ae 
ery, : ower en e 
ceaetennd manner. If pow the other arm of the balance 
: C01 2 the rese ryoir and the mercury not — 
