The Rutland herald. [volume] (Rutland, Vt.) 1850-1852, 1850-07-11

. anethcr current, Aieo sAturated, bu
having a heat Of 80 deg. Now, !
}. The atmosphere at the mean tcmr.crs
! ture Of 90 deg. had a capacity {.
. hold water as an invisible vapcr. cqaa
TO the mean Of 20 deg. and so deg
; lit is obvious that no rreeipita,;o,
; would take place. But such is no
the fact. The quantity Of water hclc
, in air heated from 60 deg. to 20 deg
cannot be contained in that heated
from 80 deg. to 60 deg. In othe,
words, whatever cools air saturated
with moisture, causes a cloud, dew
mist, or rain.
Early and late frosts are produced
by the radiation Of heat during clea,
nights from the foliage of plants, and
other terrestrial bodies. If the TEN
perature Of the air is not very low a,
sundo~n, and is humid, vegetation
will so soon reach the ,ltsc,,oint, ,ha,
the latent heat, evolved by the for.
nation of much dew, will prevent Il
frost. lfthe atmosphere is dry, clear,
and still, the dew-point is lower. and
all the circumstances arc favorable 10
freeze the little vapor condensed on
such substances as radiate heat with
The greatest facility. Any thing
which checks the radiation Of heat
like cloud, smoke-screen, or wind
which agitates the atmosphere, serves
to prevent frost. Every farmer should
have thermometer aud rain gauge.
and know the degree Of heat most
favorable to all his crops. The dew
temperature and moisture of the soil
are as much elements of production
and profit, as good manure and skill.
fuI tillagc. The writer has studied
the growth Of corn in different months
noting the changes from 4 clock,
a. n. to m; from noon to 8 p. M:
and from 8 p. IN. to 4 a. m. When
the temperature is favorable, corn
grows as much FER hour in the night
as in the daytime. No asricnlturist
is SO far advanced in the science Of
climatology, as to make all that can
be made Of the water, solar light and
heat, which nature so bountifuly sup.
|rlics. There is no State in the Union
where the mean temperature Of sum-
mer is too low to ripcn maize, or corn
as is the case in England, Scotland.
and Ireland. The cutting down Of
of too much timber in some parts of
the country has operated to change,
in some degree, the climate, and rcn.
der large districts more subject to
alternate droughts and rainy seasons.
In summer, when frequent and mod
crate rains are greatly needed, the
air is too dry to yield much more
than respectable dcws, for many
weeks in succession.
To learn the well auth cnticated re.
suits Of cleaning forests, in drying up
natural springs, and changing climates
regularity Of rains, &C., the reader is
referred to the writings ofIiuinboldt.
knmtz, Forbes, Boussingault, and
other meteorolocists. Humboldt re,
marks: "In telling trees which COW
er the crowns and slopes ofmountains
men in all climates seem to be bring.
ing on future generations two calami-
ties at oncc-a want Of fuel and a
scarcity Of water.-( Humboldt vol. v.
page 173.) The waste Of valuable
timber in the United States, to say
nothing Of frewood, will hardly be-
gin to bc appreciated until our popu-
lation reaches fifty millions. Then
the folly and shortsi ghtedness of this
age will meet with degree Of censure
and rcproach, not pleasant to con.
template.
Different plants require unlike de-
grees Of heat and light 10 bring them
TO maturity. The poiaioe will produce
an edible tuber at mean temperature
so slow that neither lis own seeds nor
those Of any cereal can be forincd.--
BoussinCault found Them cultivated in
South America AT an elevation having
a mean heat so low as 40 deg requir-
ing eleven months in which TO grow, or
335 days between the planting and dig.
ging. In many parts Of this country
persons begin to dig potatoes in seven
~ days from the planting ard po'a-
toes planted tie Is, Of May will be ripe
by the l., of August. In some Of the
southern States they grow best in the
the winter season. Winter barley and
rye will mature their seed at lower
temperature than wheat. Humboldt
found al Jakous,k, in ligh.Cenlral Asia.
where the Garth was constantly frozen
Il, The depth OF three feet below The sur
face, 10th rye ard ehcat yielding re-
turn sometimes Of 3 TO 81 seed. At
iba, place the muteury is frozen two
, por,bs in The yesr--,be cold being oy-
er !. (, deg below freezing. Short as the
summers are, ,hey have mean temper
aiure Of ~ deg.
On the northern slope Of Monte Ro-
"a, in wilzerland, barley ceasos to
grow a, an elevation ef i,2Go feet above