New-York tribune., 1873-01-28

q, ,u,a have been completely burned out in 5000
years to out heat at the preSen, mat ~ heng so
Very large we did perceive the cooling 70 e
1900 Unless The suT rs Seve reason to suppose
il would certainly In that time nav ooVe o,v encray
taken and which is think, in part the proper one
that the heat is maintained party oy % te ons in
ter As meteCEJ ss @ anta tSe snp millions Of mons per
uy contribute 70 the heat But that does not
account Or of s M volume II the sun contract
100 feet I'm radius or 24O feet I'D diameter III year
Bodies may give of heat without growing colder II
we pail Of water 1t gives of neat whie ~ Is ~
temperature until it is an frozen SO is quite likely
combinations with each other gases diSassocathg
and uniting in other FORMS and emitting neat IN tue
combination. In this process OF shrlnKage lmagine
that we ind explanation of the solar heat Yet
would speak very cautiously about IL. 90 not Kno"
anything about 1t. Ii is almost wholly conjecture
LAYER OF CLOUDS.
Next will speak OF the physical appearance OF the
sum- Constituted suppose it to be. the vapors in
the portion of its atmosphere would naturally be-
come condensed and form clouds. As in the upper re-
gions of atmosphere the vapor condenses ana
forms clouds in the sun, there would undoupteuy oe
clouds and there might be drops the dlnerent gases
being condensed into liquid form, not INTO wateI 1St
into the metals with which we are fama on tne eatn
iron, copper, silver &C. The appearamee , vi 'o a u
this idea. 1t looks in the telescope IKE mass
or ike cotton wool The surface Of the sun is notified
all in this way. 1t is much darker on te euse'
which important point IN eApalnInE l.s conSt
tuition and there also numerous Drght streaks caeu
facu besides the solar spots, OF which small SPEAK ID
a moment. Mr. Nasmyth thinks that tnese irregular
forms resemble willow leaves. have not seen that bnt
have seen i'm the sun what seemed irregular masses,
dark spaces and here and there apparently hte hoes
PECULIAR ASPECTS OF SUN SPOTS
The bright spots called facue, are elevations on the
solar surface But most remarkable objects on the
surface of the sun are the spos they are far more
striking than the facue and this before you pontng 10
dagram) may be taken as good example or type OF
such spot fairly formed, and well established In the
center of il is dark spot looking like hoie Inc noes
are not usually uniformly dark there are usually niue
bavs formed in the surrounding region; the edges OF
these are sharply defined, with no shading Around TINS
center called the umbra, there Is VIDE border oaeu
rho nennmbra almost invariably darker toward It's out
side edge and striped radially This holethe umDra
n IL be a hoe-is large that the earth might pe
dropped through IL without touching ts edge III Is
over 10 coo miles in diameter. The facle are always
very numerous near the spot Where Ihe acua Coihes
TO the edge, there is a little projection 49,, -
Here is diagram illustrating the spot Observed by
secchi in sGO as seen Just as II formed Every
thing was in confusion dark place beginning here
and another here, and here again we md whlrl OF
matter and here things even more confused anu
there Is no evident construction 1t was 1000 miles
long The next day after "a hours the spot was drawn
ont and became narrower and longer Inc sun rOtaes
once in 25 days. and the spots carried with IT, But
the SPOT itself undergOes change OF fOrn IL jumps lot
ward with reference the rest OF the solar surface
leaving a trail behind. as If something was dragging
through resisting medium
sPOTs.