New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1875-12-17
PLANETARY GROWTH IND DECAY.

PROF r. A. PROCr0R's SECOND LECTURE IN BROOK
LYN-sIMILAR COMPOSITION OF TIE PLANETS
HOW TIE EARTH WILL DIE.
Prof, r. A. Proctor delivered the second of
bis course of five Astronomy, at the Brooklyn
Academy OF Music, last evening. His subject d" The
Life and Death Of Worlds" Tho audience nearly filed
tic body and galleries OF the Academy and the lecturer
was more than once appauded not only for his
eloquent descriptions Of scientific discoveries In regard to
the moon aud other planets but for the beauty and
aptness OF many the steTeoptcon views which Illus
tlated the lecture.
Prof Proctor said he would trace the history OF tho
earth from the present time TO the time when
It will Dc dead, Ike the moon. The planets
differed from one another in all their char
act4rstlcs but they were alike In ths-that they
were all made OF the same material. The spectioscope
mad shown that the resembcd the earth in matter.
and there why IT should not In ike man.
ner resemble the other planets. This part of the lecture
was illustrated by co0nd views showing the solar
spectrum and the spectrum OF iron, and the man
per Of testing the presence OF iron In the sun
The present state of the planet Jupiter was ten shown
The Garth the lecturer said would on and reach the
eliminating point OF life and then 20 down to death
long before Jupiter would reach period in its history
CORES pondng to time In the caths history
because Jupiter. having much greater, would
take ten times as long the earth tO part with its heat
The large planets had longer time Of life Than tie small
Ones just animals had longer existence than insects
In reference to the time when lfe was possible
on its surface each planet had 10 he judged
bv itself The Odfashon'd way OF treating the
outer planets. being different members OF the same
family the earth and other small planets near the sun
was incorrect They were bodies Of different order
altogether. IRE planet MARS, the other hand was
smaller and much oldor than Tie earth having rIYed
at later stage " planetary lie. several views were
presented Of this planet IepTesfnts .e peG n,s si
surface. The amount Of ia9h ana wafer te M nn'
,9oat sGpa R' GGss this 70 s /, f9' p s
bic that "A time il coming when, as our earth grows
old the wall diminish in size Is that LAW ual as
the earth grows older the ocean grows smaller These
questions, which were put with considerable dramatic
looked at what place in the earth we might think
that the time would come when the ocean would dy up
bccIuse the land would soak mp III" water This was
regent theory held by certain scientists As planet
contracted, numerous small c'yiles formed III H. snf,
ncent swallow up all of It's seas lhose caNltcs c0ud
nat ho large else the substance Of the planet would OIL
them, but they would be mere nters'lccs IL had Deeh
computed that In ne enough o tneSe mttfsuoes WOulu
its bed.
the moons Tho was taken a. the type 81
planet which had become dead. IL vas probably dead
IL had 20 atmosphere, shown by the cearless
with which It's irregularities were shown III the photo.
graphc views the absence OF var0r proved thdi IL
had no The apparent seas upon is surface were
merely old sea-bOttOms, ana their character showed thI
ey we're covered with deposits OF animal structure ana
I.e sane ah ,er nroofs wera adduced of The want
of an atmosphere and OF water on the moon.
Many very striking views OF the surface OF me moon,
showing clearly the CrateTs. mountains, valleys ana
stalows, which varcgaie it, were exhibited some OF
these the lecturer said now having been taken In
the Southern hemisphere. The earth would dc, ffpf
Proctor said ways than one. II might be That
tie human race would exhaust the means OF lie; 10
might be- according the theory of Prot Hyatt Ot B0s-
ton that man had passed the highest point OF bs
phy steal DEVELOPMENT, and WAS deg neatng; ana IL
gt be tuat TIC natural process OF cooling OF the earth
would destroy al! life upon II. There was pnOthef
way 20 death for the earth. wnich per
sons believed In, which that II might tic
burned. Thi. was an astronomical possibility IN 1866
snr IN the Northern Crown suddenly bltzed out with
500 times usual b1ancy, and then oItiDglsbed.
The same accident from Whatever cause II migut arse,
could happen the EARTH but man could LOOK forward
with hope for plans after planet wac taking ON the
forms of Hge-eyen Jupiter would. alter millions OF mil
lons of years become habiabic aud then might
come into existence very far superior ~ man Ia his
highest stage Of development. Finally, after ases and
ages the itself might reach that Stage When LIE
lght exist upon il fer millions OF years