New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1869-08-06

evidence OF such rotation in Maj Tenants glass copies
Of his photographs. But there glare u light be-
meath the promnences which the observations did not
satisfactorily explain and Mr. Dc La Rue states that It
is necessary wait for failure solar ecpSes before we
can ascertain with certainty whether any self
luminous atmosphere between the phoosphere and the
under side OF the prominences;" and he suggests
the Importance OF taking Photographic obser'
vations nearly possible on both
the northern and southern limits Of the shadow,
we'll at stations situated near its center. Prof
Brayley deduces from the observations 1.-The strongest
evidence that the faoua Tor bright portions Of the suns
dlsk and the luminous promlnences Identical or at
that the latter the superior Examinations Of the
former II such be the fact they also be connected
with the spot." He says: 10 Will be consistent with
oil known facts 20 believe that they the prolonged
SUBMITS rising from the level Of tho photosphere or
that portion OF the suns atmosphere from which we
receive hight of the torrents OF matter originally wholly
gaseous ascending from the nucea regions OF the suD
which piercing through the successive envelopes OF the
nucleus form the cloudy stratum to the phOtosphere;
and tina, the observed hight to which the pronnences
ascend the consequences and tho index OF the
enormous force with which tho original torrents are pro
jected from the nucleus" The polsrsoope showed at
various places OF observation that the prominences gave
no indication OF poariEed lgh but tho other hand
that tho light OF the polari1ed In plane
passing through the snR's center The mOst important
observations however, with the specroscOpe-that
wonderful instrument by which Astronomers can deter
mine the chemical constituents OF the heavenly bodies
This instrument showed concusvely that the rcd prom
nences consist Of luminous gas, giving spectrum OF
bright lines
on the day Of the eclipse M-Janssen. who observed
the eclipse at GuntOOr observed the solar prouberances
with the spectroscope. He says;
"The total observation occurred instananeousy, ana
the spectral phenomena also changed Immediately IN
very remarkable manner Two specra formed OF hNe OF
six bright lnesIred yellow green, pue a i f tie
VIII Oh had lust disappeared Ihes9 sPestr1, aoouJ
were separated by dark space in which could see no
lines The finder showed that these two spectra we're
caused by two magnificent protuberances when were
now y.e ON each side OF the point OF contact One OF
them thai on the left, than three minutes or
M the sums diameter) In hight II looked like
the flame OF furnace rushing violently from the open
ings OF the burning mass within, ana driven Dy rtronS
" nass ~ spoWy mountains with It's resting the
moons limb. aud enlightened by setting sun iho
preceding observation shows AT once; -. ,.,.,
Frs The gaseous nature OF the protuDerahoeS ''no
Senord. The general similarity OF their chemical COM
nosfion uhe spectra corresponding line for incl
Third Their chemical species the red aud blne ZINES
of their spectrum being no other than me lines shd Oh
gen gasl."
He says further that" Is very certain that II an AZ
mosphere formed OF the vapors OF oil the SUBSTANCES
which have been found In the sun really existed ABOVE
the phoosphere II would have given spectrum AZ ieas'
IA brilliant ne that OF the protubennces. which were
formed Of much less dense aud luminous Unjust
then he admitted that IL this atmosphere exists itsght
IA so small that escaped notice must also ada that
this result did not much surprise me- Tor my nVesuBA
ons OIL the solar spectrum had led mo to doubt the rea
OF any considerable atmosphere around the sum- ana AN
more and more inclined 10 think that the phenomena ."
elective absorption ascribed by tho great physicist OF
Heidelberg 10 an atmosphere exeor to the SUM- are Que
On the vapors OF the philosophers itse In which the sod
ana nouId particles forming the luminous clouds are
floating This view Ii not merely In harmony with the
beautiful theory the constitution OF the philosophers
which we owe TO NJ Faye, but even seems 10 Dc heces
sary deduction from It,"
On the dav OF the eclipse M. Jansen discovered
,hod no which these red protuberances might be OBJ
.orod aven when the sun was unobscured and applying
,hi. method on the following morning he soon 50"
the bright lines formed by the prouDerances Dut the
length and showed thnt great oanRes hau
occurred IL was evident not only thnt hydrogen WAS
the most important element In these circumsoar masses
but that they rapidly ohangiDS po'n ~ i ao
no.ton He also observed that the bright lines OF the
,hooss sometimes penetrated into the correspond
t d.rL ,nea OF the solar spectrum showing that tho
nro,nharanca extends over part OF the suns DISK III
was IN he expscted that these protuDeances peionss
o., ,n ann wohd exist not merely on the margin rs seen
from the earth but It's whole circumference OF over
49,. ,ase: but during eclipses the interpositlon
q, rho ,oon makes Its proof impossible. Another ad
-. :, On. new method OF observing the spectra OF
80 srconslsts In the fact that these spectra
are directly compared with the spectrum OF the sun IL
All, horsa In eclpses, the suns spectrum being cut
on hesr necessary TO resort to graduated scales to
AZ the poston OF the lines The principal conclusions
to which Mr. Jansen arrives at the time OF 0is report
e.s, That the luminous protuberances observed dur
, ,","i aennses belong unquestionably to the orcum
solar regions A., - ,, 49, 90 ,iu.i,, cou,.
S,.o,d That these bodies are manly OF ehtrey eoi"
| nosad ~ Iucandeseent hydrogen gas
Th,rd That they are subject to movements OF wnleh
no ,srresyial phenomenon can Sve Us any idea; "ne'