, 1869-08-04

sseSAsale asaeeszs2a 81
:, KET. FlASEra r i = r !;
!Ae,rouomerB will note scientifically the a27ear:
ance OF Aereufrs but they wlll look with much
greatcr anxiety for other worlds u yet unseen By
mortal vision. 1t Tas announced some ten.ycats
ago that certain observed changes IN shc position
Of the orbit Of Mercury we're probably die to the
attraction Of number Of s,naer bodies revolving
In au otbtt between him mud the sun The causes
whlch prevent Mercury frolo being secn operate
at!ll more dendrautageonsly In regard TO these
interior planets tH such these bel md there IL no
hope Of gazing upon them other than with
the ere Of faith, except at the time Of a total
eclipse. Tue light Of the sun being then cot OF
by the mte1posltion Of the moons body, 1t Il quite
possible that the existence Of hcsenoH-hypothcrt
cal worlds viii be revealed through the telescope.
1t Is thought probable thai thore are about tour ot
these bodies but their number may BE- "ltgIon."
This really is the point Of grcateat Interest," and
tho number Of these bodies be but small, some
Of them Mill probably be ytgIblt to the nAkoo eye
during the tine Of tota, eclipse. while those who
POSSESS telescope Of moderate magnns ring power
viii 90 weu To 1ook out for them. and note Is &C.
eurate35 as possible the position with respect 10
the suu and dIcd stars. The area 10 be Observed
viii DO but smali-snce they will necessarily bs
seen within about Is degrees Of the Run IN loRgt.
tude and within about degrees Of the eclpsic
line on either Side Unless seen near the limit Of
III degrees they may be easily distinguished b.
the teiescoplc observer from the 1Kcd stars, a. the
motion In The orbit Ia taph enough 10 give aen-
able change Of place during the time OF obsefva.
t,on. Should auch plnuets be discovered, the TACT
Will be q memorable one ID astronomical annals.
TIE srT.
Tho search for new planets viii be 4 new
branch Of Investigation daring a solAr eclipse;
but there Is also Frqhau, partially solved, to
which meay assFpoomess will bend all their curr.
g3es. Tbs light Of the sun has been often c1atu-
ined By Instruments constructedto tot the purpose,
Iii usut1 nua vii, iucsIile, the .aa@+ra<i VI
h!ch llo ls composed, and especially to nscertatu'
II there Ia any grounI for the bnllci that the sun
and enrth art Of ORG common origin. Tho l2ht
OF the snn has been subjected to chemical soFu-
tiny and roMpared With tic Light produced ny
tho burning Of number of substanees With which
we arc familiar, As crtCr4ng into the conpoattoh-
Of tho earthh cTuet The c1pefimtnteta hare
already seen enough to watEans iho conclusion
that ruany IT The so-cnl1ed "chemtcal clemeuss !"
exist In tho Eun's atmosphere, mil hcneo conaid.
er Il probable taat the earth, sun. 'moon, aud 81
tho p'nnetar. bodies and comets cornpt!AlnR what
u known as the tolnr BJBtcm. haso bccn FORMED
cut Of Tho snmo clements, originally 'lafpcI4cd
through the uplsersd in 1tAta Of chaos, hud n1de
10 cluster atuund certain coutrcs Of osEtay1taon on
the kplng firth Of tho crtatiYe f4t. Hat Il u d
scry dln,cu1t matter 10 daal with th1 full volume
Of solar llxnt In making thosr experiments. and
asFunotcss, lhcFofoss, wait anxi1pstf for THO 6p-
stuntty Ut cx1m'ninx It IN suan por1ous--4n. :.
kl,err, No 10 ttcnk. They can us'tefxc critically
the sm I'll thread Of Light which pfcs out from hc'
h,nd tho noont tlse, whcfo they would ''c unable
10 dSscCi tho cbmponcnts Of thu full aooi VI lA2 2nt
which popfn out iron tho unotrcu rpd sun.
VIZ hare tho heat Of rraloni tof believing that
ttc kun Ii tnteusel5 hot, and thAt A tatninous ~
no4phefr, Ito vibrations OF which t1c1tc kno 4ca~
tatluns os light rad heat. constIat many 3asoous
kni toitd hod!es IN 1tata Of incahdeaernos That
atmosphere has lecn computed "a rxtend million
Of miles aioye hla mora sod surface, and It shines
out MI around Tho moon wncn her dark f'odJ II la
ts1rdAt&l between hin ant tho earth. That lnri-
| uuat1J-callcd tho !" "corona'-wllt b. received on
! hundreds Of spectfums. and hsscc'td ar Info III
cotnronent parts. Tho ny Moving from zach scp-
ntAte portion will be spread out thinly over CON.
ra.at!vcy great leuRth md then exatu-
| t1cd in thr spect1osrrupc lot tho reculia!
| arrangements Of dark Ana bright lIues
! n hlch Indicate Tho presence OF hydrogen. Iron.
sodium, and other known clements. ID an tncau-
dcaeent state. The nam!ng protubcrRnccs which
| hare been observed On !psmer occAslons TO ahoot
| up out oS the general mass Of light viii receive
special attention AL thesa will f'c photographed,
md thus held In permanent fefm for Inspection
| aud measurement after the precious moments
have gone by. It u not too much to oxpect that
the question Of the soar constitution Will he oeh-
n1tety set,led BY meana Of tic observations =, ads
| on the coming eclipse
| TIE MOONS ORBIT.
IN former years the enors Of astronomers dnf-
Ing tho time Of m eclipse were chiefly directed to
comp on Of the position of the moon Is cac1t
| LATED and as determined BY observation Their
object xas to tic,tct er1ur1 III the ASSUMED ele-
,nents Of the lunar orbit There l. less need now
for thfa epceica Of obecfs1tion a The " lunar ce~
| menA are Known pretty aocnEaiejJ. fsk A.
t1ononeEz differ aghty sven nov. A.
sumng the computations In the Greenwich
| {Rpslah) Sant!eA Almanac ~ correct 1os
the time Of the middle Of tbs eclipse, the Ts1h.
! lpgtnn tAnet!can, Ephemer1s gtses the right
ASCENSION OF the moon aa Bsyenhun-
| drr%,ths Of second Of time too much,
| her leclaauon a. thtrteeu-tenthR Of \
! second Of arc too sm.ll, aud her horizontal
r&1allax as three-tenths Of second TOO great
That q, there are there differences between the
| values Of the uoons place, al the sane aosolota
instant Of time, a given bJ the t~o authorities
The differences ntr 1n,nu, Is true: but II would
be mora satisfactory II they coz,d b ealre1,
eliminated. .-. ~. -,
1ocaL rHEHexkHA- ~ a.
The sranzepes= - tae appearances Of taingx
! On the ea1.hT iur{ace during tha eclipse WILL
vary widely viii The place Of observation. In
places where the Atmosphere IS overcast there VII:
be 10 pe.eeptlbie difference, except an untehna-
tie Yauness or chlll.ness II the alt. and nothing
70 note the time when the sun u shut ont from
the AiGht Q! EoEa privileged uoEtah- Whcro
clouds obscure the Vision 1heJ are -gentrasl1
rsiu c.ouda, and The rain Is usually
Of dr3zz:J. character; it seldom falls IN large
drops. In places Yhese tho tky is cicar, ne ar
mas be expected to cool on sonewn3s prty!ous to
the observed time Of contact, And tho au1Mala
show their rremonE1ons OF the Unusual 1enf pI
vls1cu1 strarSn nououa During the rosArty vt
the eclipse fowls bare been obsesrsd 70 toEo
| nj f.tY,1k fff he a. n
.st,rtk. By . stone. doubtless from fright ~ the
sudden change; Whue beasts have become pers
tect1. pantcs stricken, and manifested tho most -
! tect terror. . -. :. :.
In pl2ces where the eclipse Is total <And !stslhEe>
the AkY Will Erpw gradually fazt- and xu11nann.
ing objects become invested With Il westd olaex a
copper color. and the mcCoH edge FIJI be nafkfa
: bJ pale c!1cle:, whieh VIA formerly Shou2a1 %
| hc due TO the pasBage Of the h1laz FnIs through
| uEr at1upspbs1r,' hut Il row known to belong q
the solar oody, The .stttr r called tho Acptona
or c1ovu, f1ru, III rts*mtnnfs ID The hAo ofesn
represented IN, pAct01es stound tna aeaaa o'
ka;uu- =. :
cxr yotz dAsss s1Apf. =; ;.
rtlsxrlt known fh49 tn sot3r eclipse can b
ut,ter Observed through 4 piece Of smoked Rtaa'
! 1nan with tte nsknd eJt. Thoae. sheEttpre, Nh
t ara not pro.!ded With properly co1ofed Efasse,
5or u.s With instruments. win do well 10 psesxr,
IN tnis wsy 'os = nav d1 this tnost 7inse1casfn'
phtnoucnon. ....,7-,3
: =. ruR xooxts saApotE: - 's,@E
1 Tn generally considered u hetnI nndazstoo
that the phenomenon Of zol1r ccl!paA u canse1
1 by the moon ps Ming tetHesn tho son and ths eJ
. Of the Observer. likA e1o1s many other H1e
: mote" trnths, howevef, 1t y mhGe &unersttI I'd
,rutttcd thAu curup1chaadod.> In viz nadcaYor I
t explain the cnuse and ch1Iac4as ai tta pAenou
. nan - c3ssti5 u my n done with fas I'D
!. / Ma2r1m -