New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1860-11-07

iol Yellow ay A. e1n set presages wind pae yel'
los, wet, and bus, by Tue prevalence Oh 20 {5uy~,
or grey hnte, me coming weather. may 90 ipres0'u ~
merry indeed il aided Dy Instruments, nost sxacD
Small jnky looking clouds foretell RAM hghs scu3
clonds driving across heavy masses show wl4d alu
rain; but If aone may indicate wind only Ig uppea
couds crossing the suD moon, or STARE III o'eoso S
different from that Of the lower clouds, or tne WIN
thep elt below f)retell change OF WIND. "hen sea-
bi,ds AZ Ont early and far 20 seawafd, moderate VIM
AID air weather nay 30 expected when they p@ng
abou, the land OF II, Sometimes hyiog inn.np e1
pect a strong wind with stormy weathei. lnie are
other signs u q coming change IN ne weather Kno"n
lesa generally than uay 10 Desirable. aud, therNors'
,portb notice. such as when birds Of long tight, rooKs
eyallows or others, haeg about nome, or ny up aup
down. or low-Tain or wind may be ezpeckd' $50
when animals seek sheltered places, instead OF spread
hi over their usual range when pigs cly stra"s 70
their sites; when smoke from caimneys does not az
cend readily Tor straight upward during ceml, az NJ
favorable change ia pre- babe DeT 10 81 lnoican3n %
fine weather; 50 ia fog, NeInero OF tness Two
~ no o.cur under an overcast sky, or when tuefe ID
much wind Ore gees fog occasionally rolsd swsy' rs
Il were by wind, but sslcom or never formed WINE
is blowing.
And IL seems that one Of the great Napoleon's Mar
sfsls had HE os D pet systsm Of 80 weather wisdom
"Tbe late Narsh8l Bugeaud,' says the EmaHctpG'
ti0a of Brussels when only a captain, ddflng me
Spapish campaign under Napoleon J., ouee read IN
r,onus,ript " hich by chance fell into his hands, tbSt
from observations msde in England aud Florence our
iug period Of fifty years, tGs following respecting tus
weather had been proved 10 mold true. Eleven Vmes
ont of twelve he weather remains the during The
whole moon as il is the 'ih day " continues m
changed over the sixth day; snd nine times ont OF
twelve ike he fourth day. the sixth resembles tns
fonrth' From 1919 10 1890 NJ. B12eaud devoted nus
attention 10 agriculture; and, guided by the law Jut
mentioned avoided the lOsees Ia daytime ana Vi1tage
which many Of his neghbOrs experienced. Nhrh
Governor Of Agiers, he never entered on ealopsgh
until after the si&th day OF the moon Ills leiyhDO,s
Ill md ia IAN mt In
often exclaim, How lucky he is IN me weather;
Wbet they regarded as mere chaDce, wac inc ssu'
OF observation In counting the fourth and sixth days.
he was ps ocular ia beginning from the exact lAs ol
new moon, and sddsd three quarters OF an hour ior
each day for Tire greater ieDgn Of the lunar, AZ com
pared with the solar day.
Before the invention Of the barometer, It was OF toe
utmost importance especially 10 sailofs, to be thus
forewarnsd; but in 1913, simple experiment by
Torricsh Italian philosopher led TO the discovery
of an instrument which obyatsd the necessity Tor any
uncertainty Oh our part. With it's sd farmers can as
certainly know VIVA. the weather will be, IA by the
thermometer they ascertain the degree OF heat IN the
amospbers and if they have tuns Of bay and acres OF
grain spoiled during harvest they NJ lsast have none
10 blame but themselves. IL seems very mysterious
and supernatural 10 the savage that by looking st the
face OF an instrument we can know Of storm and
rrovide agsinst it; but it all seems plain enough to
rim when the simple principle on which It works ie
explained. Perhaps there may be many farmers who
are in like quandiry, aud would be glad Of an ex-
plsnation too.
To such then, we wouId say that the barometer tas
it, compound Gre5s n.me iIdCates is mere weight
measnrer Not Deas1rer OF the weight Of pigs or
potatoes, men OF women, but sort Of steeyard for
weighing air. Positively ro.hing more nor less II
An inttrumen. has been constructed for weghog air,
il will naturally be inferred that cir has weight, and
that It is sometimes heavier and sometimes lighter.
Before Torrcelli's tine these facts not known,
or a. any rate not proven but sncs then, the whos
ocean in which this planet swims has been weighed
I've may almost say to a tun and each Of its mnutes'
ingredients tested, tasted, weighed, and named. We
know now that the air.sea above is about 10 miles
deep that at the surface Of the earth, from the whole
superintendent mass resting upon it, il bears with
weight Of II pounds on every square inch that az
We ascend from the earths surface, the weight de-
ereases and that Just before storm, the atmosphere
becomes lighter and when the crisis q the torn u
passed il grows heavier again. Thsee facts have al
been arrived by actual experiment and are sbso-
luttly indispu.abe.
Now it beug found that the air grows lighter before
storm ami that in proportion the chsnge comessuf
duly the storm win burst less suddenly upon
ur we ehouli with the aid of snitabe barometer or
sir-scaes be able 10 know when storm i. comiUg
And moreover, by the same simple instrument, we
soud be able TO know when tho storm has reached ts
climax and hss about spent i.s fury. OF course 1t Is
not necesssIy for wait until the black rain-clouds
are gate riDg above heads, before being warned;
nor TO wait for returning sunshine before can be
assuTsd that the shower has passed. Our barometer
warns soon az the fret preparations ars being
made for the storm; and can watch it's gradual ap-
proach ea'ily by the aid of the Their
mometer how the water in our kettle heats gradually
to the toiing point. There are various conrivanoes
for weighing the air. all called barometers but each
having It's SPECIFIC beside. The first aud for sci
entifc purposes the best is the msrcura barometer
which merely modification ofthe discovered by
Tcrricell in 6i3 II contests of glass tube termi-
mating at the bottom in a little cup or cisern, or
is bent mp like a sphon The air being exhausted from
this tOJe, certain amount of mercury s introduced
in email quantities at time boiled as each portion s
added the heat being applied to that part of the tube
containing the mercury last introduced. Care must
be taken that air be suffered TO enter aud tbs mer
curry must be absolutely pure On inverting the tube
when properly filed, its lower end being kept in a
basin Of mercury, the column in the tube gradually
nlhhe uhtll ~ NJ ol duOut ABOVE
the mercury in the BASIN This indicates that the ord
pary pressure of the atmosphere the surface of the
mercury in the basin is great as to force the quick
silver in the tubs to stand hight of 30 inches 1T the
level OF the ses. Before storm, the air becoming
lighter, of the mercury will drop lower in tos
Tube, and as the air becomes heavier sgan it
bears down with more weight, and forces the mercury
back TO its old point Thus, by atchng the rise and
of tha
weather with perfect accuracy.