{"newspaper_name": "The daily union.", "edition": "01", "page": "p2", "byline": ""}
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of fluctuations to which the gaseous robe of earth ia
subject. sa ,a s# VS..
III. THE CAUSES OF THESE CONDITIONS OF THE AT.


MosPHERE.


The principal condition Of the atmosphere during
the four periods named, and from which all the 9th
or characteristic phenomena result, is a comparative
repose This il found to exist either when the tenn
perature or PRESSURE both united, have attained
d maximum or minimum, and are about to pass
to the opposite extreme.


The ordinary condition of the atmosphere il
change, arising from difference of pressure. Ofthis
the more remote cause is change Of temperature
producing rarefacton or condemnation, and consc
quently change of density. By no fair principles Of
philosophy can the atmospheric movements be no.
ferrcd either in WHOLE even in great degree, tt
the mere rotation of the earth as the cause. Rota
ton, in an atmosphere revolving with the earth, al
the great mass Of ours does approximofsy, and as
would absoiuteiy, were not change Of tempera
ture constant disturbcr of its equilibrium can d,
no more than modify the direction and extent of tn
circulation thus originated lra


1. The diwnai changes Of temperature are accom-
panied by currents or winds, which increase and de
cline with the former, which shows how manifest,
the one depends upon the other. Night is the ne
riod Of repose. The strong night winds whel
they occur, are not exceptions to this law but be
ing in the rear Of some great storm which has jus
passed, have another origin. As the diurn,
changes Of temperature are temporary and con6ne
TO narrow limits, they produce atmospheric move
ments which, being equally limited in time and dc
gree do not very materially affect the great mass
the atmosphere.


2. An equally intimate oonnexion u found to ex
ist between the rsoufhk and snnsai fuctustions q


