New-York daily tribune., 1855-08-21

rh,lo
lstsral cha1gos 10 be ps01UOo~ O!F !Fuoh e0"o"s' " ~
r. ectetof pleoe. e.,,,,. h;ob 49,.
- copsidcsed stJl more conclusive against such a
L. yiny Take cases which very often occur When
.c eCptic is somewhere toward right angle to the
borizop and circumstances therefore favorable TOR
GOOD csplay Of the zodiscs hght. Say II Is morning,
p. hopr sud a half before sunrise. Tue base OF this
-, viii be exceedingly brihant-as much so almost
s ft the sun we're iust going to rse-who the vortex
~ he lirht overhead win be so dim as scarcely TO be
,ns5e ont. &c. on the supposition Of solar ring
scbi,r bevond thc earth, the base Of that light must
~ 1so 900 90 ofimiles from u.s. aod the vertex
re,at;yelv orly very short distance, while also the
Iie ciicuit Of the ring ID equally illuminated by the
s1n and those portions near our zenith, n fx as |
sr iu0le also more favorably situated for refostrng
bis fight than those portions At tho base. We can
scarcely imagi such state Of things.
Believing that this query must be answered in the
rsga'ive am driven TO the only alternative of Heb-
6qs riug around H. earth. The Moor zodacal light
seems also TO show that matter lies within the orbit Of
fhe Moon should Judge from my observations that
a cross section Of tins nUg would be pcac shaped, al
iswng inward curves to the pear that its moro
coIdensed central portion is far it shows itself
10 eye. about 30 wide, while the more diduse will
make angle to the eye Of 100. II appears TO lie in
general along the eclipic, except in December and
June, when observations of several successive nights
in both S53 and - seemed 70 indicate crossing OF
the CClpc line at an angle Of 3 10 s.: and perhaps
aI-o, in September ard March, similar crossing in
fhe opposite direction. We must speak, however, with
great cistust Of he Width for have only its rofCc
ron N the night, or its iourneyings over the eye
change us place with regard to the ring itself and
fhus bring different portions Of i's curved surface in
position 10 produce reflection cOgnizant by the eye
Stl, think The dimensions gvon above near the
truth.
do not come here however az the advocate of
theory, but 10 give you the possession Of facts And
ibe facts which present are but meager compared
with what we need. hope il they do nothing more
that they will increase the number OF observers on this
interesting subject for il is only interesting in
it.e but one of the striking things about II il
= ioadq fbo md f,r
sef We may well queTy-if the Iod. It. comes from
nebuous nng around our earth and within the orbit
al the moon may not the shooting stars and even the
yrolihs have their Orlgin there : observations, |
sb;nk show that there i. constant commonon within
ne ring tself may not the nebuOus matter half az
faomt rated here anc there, be shot by these commo
ions beyond lis sphere and, caught by the attraction
a the earth, be drawn down TIL, striking our atmOs
fre they glance in any casual direction, and taking
hit become consumed, thus giving us the shooting
sars And may not lis nebulous matter still further
solicited and with a fate, affordus the aroesl
Por If such matter could have once afforded us our
Moon il may easily afford bodies such as @rolites are
found 10 be-
what + nebulous matier2 Ny observations throw
10 light upon the subject II is very transparent, for |
had no difficulty III seeing stars of the sixth magni-
fuce through It's most eugent, and therefore deasest
portions. Bot Transparency docs not argue tenacity /
sE matter Of course for rock crystal aud the da |
rropd are The most tran spareni while they the
deIsesi ano hardest OF all bodies But OF whateverc0m-
posed do not suppose the rng of the zodacalhg1tto
he composite for IFS internal disturbances are opposed
20 this But with our present knowledge, such reassn-
1gs cannot satisfy they only becSOn us on to be
seMC'ors and further collectors offacts.
Prof PFmCE fully concurred with Mr. Jones in his |
theory and if this theory had been the first proposed
no sccnd would have ever been entertained. His |
only objection had been that one satellite could never
maintain a ring, and he sill is of that belief but is
cOnvIcec that il has many other satellites too small
40 be seD hut that the satellites furnish the mecOrs
el fa n fhp rfh Ae IN hp
hey some within the ring and some beyond 1t.
T. OF ALEXANDRA drew from the fact that the apexes
cl the T. L. when both were visible were SO apart,
;La. the diameter Of the earths ring @ coo miles.
Prof SuIM,N, Sen, recounted the history Of the |
Weston Ioeteor. Immense masses have fallen. Now /
Al Of these mus, have nmon origin for they have
common chemical character. They must fall every
few months on land ocean Tue hight at which the
Weston meteor exploded was supposed TO be about IL
nm es and its diaISeter about 800 feet But little of
wac found-whero has the rest gone He concluded
0at these masses revolvc quite low.
ErOf. j. LAWRTNCT SNIIH certain that they
we've fragments OF sc1ne body belonging to our own
terrestrial system, but not to the earth. The qucs-
ions Of velocity and size are Of the highest import
Aroe Trey generally strike with ess velocity than
cannon ball although they have been supposed TO
enter toe atmosphere with velocity of about eighteen
miles per second As to their size: After the explo-
sou oftle Weston Meteor if any fragment went over
wOulc have been Visible many minutes after the ox
rlo-iop He thinks the diameter overesimatc1, aud
hat the IioCos picked up all. He made eXper
gent tIe Illuminated little piece Of charcoal so
tat at the JistanCe of halt miC IL showed an lllu
auated dist three times as large as the moon. Trgo-
aomeiry would have made that point of charcoal 200
oct in diameter instead Of l1eth Of an Inch. He
thinks tho Weston Mceorito several feet in diameter
Prof GOUI thought that Mr.. Jones's observations
threw more light on the nature Of the Il. l.. than all
before him. He added that If, instead Of a ring the
Z l.. were bui an ox'eusion Of the Esrths atinos-
plere .t might Lot need planets 70 s,an 1t.
Prof HAcErFr thought 4 the extent of the n. l..
varied the fact Of their being 50 opart would throw
70 iglt GA ,he question Of the size.
ArrPRSooN SESSION.
IN .he Stcticn OF Physics Prof W. B. RoDGrns
sad PAPER on Bnocular Nision.
P,of ksDGYRs began with the first principles on
Sl'ch ha siclco,cope is founded. If bright bead
b. placed ON an erect pin at end Of II board five
So, long. and two black beads be set up in the same
rayu,sr The middle Of TIE board az such distance
arar that when the face II at the other end, one oack
b si WI hide The bright from the right eve ana
he other from the lof looking for ae bright bead
theCre viii zee three black beads The middle or
5r.hte.t one will be made up Of the right bead seen
BY the right eve AND the left bead seen 10y tue etteXe
- raht hand hinge . IN bc the right bead, seen by
he kffevo and tie other the left bead, seen Oy the
n-ht eve Now arrange a diaphram, so that eaeh eye
Sal sec bot one bt ad, aud there viii be but one
mace Do ftc n .nd mace up Of two objects. TINS Is
fho s,creOscOpfs Every figure appears 10 be where
a ovcs Of vision inrcct when they seem 10 see IT,
e h b. eve ~ees only the et( OH CT, aud wee versa
ie irnseo will be nCarCt than the oDlcc1, enu
srga~ n a. usual, the night object he seen Oy the
uehteye sc the Image Wili be more rehe't anu so'
~, ore thir il curious; the eye must adjust IT'S locus
a. s.,.,7, of the ohifct but in bnculer vision