, 1870-03-06

been acblcsed. AstrutouJ has so& oetn content
win 10 aleeosI1 ts1k no NetlN heee eaa % o5
fpessuuitnz xnaI hast Worthy Of tDs task hAs
Been thn tns'turseut With SHEA II nAs hsen m
oetlaken. dho great equatorial OF Tho oteen-
seIescope in the world n rcuafds tns oaucAl
qraliuee HnIch the aatxonomer delights In. Ch1-
ssroe,ed hy The sane eminent opuc aus wno n maze
both tne 1Anoo1 PoulkuSA fEffRetor end tae Lo.-
ezcope which has s1ooe 6nch dIsttagoished seNlcs
IN Tho cAana OF Eclenes u Cambridge. uoltfo
ss,s sa6 pos Interior TO- en ~. ~ .osna
instrument has heeo mounted IN : mAuuef xhiea
does infinite credit 70 the mechanical ingenoiv os
mhthemsucis1s unsurpsssed nerhaps IN ne wpf!a
eurtsons the uoole Observatory in Whlca u y
p!sss WE Msssasy wn,en s:n S1anSE gS
perhaps. be extended mors WideN,. Eo.eao1
Dent has taken caro- tb1t lhe cnl6s uAuuust
onse1vateIy shall b provided ios, n an Isspecm'
- WoTthtlP to kupport tic NATIONAL iepo1nA'u.
Future ages viii doubueEa record long leso.
phgElca1 TeGe1tches In which the poEets ot tno
Doole equatorial OF our po5ly furnished pn,el ~
pssctsed sstro1ouen now gsaneieo II os0en-
wtch- .,.un
ton Il oce OF winch our county, may MgI "
proud. A&uy months strce, MI Sont. 4. F.
Ine co!el ats.staut Il Greenwich. sud Asea1y
prooem Of the 1una dl1sanoe. turnc1 ~ thon8nta
tow1rd The application Of the po Hef1 o. tns 9feat
equatorial 10 tue DISCRIMINATION o. ttsnAs LEI LEE
TIE fe2ulta he then attained, though heoty intes-
etur &. Old not become widely known, os NJ: T. aug.
gina having anticipated ineir puaieauon ny 90
nnnlcat1n2 70 the koyal sSe,eiJ ns az suc -
nsye taio. II wss tno simple fscs that We DO
receive heat from the st1fn, not quaouause
sqss Of m e nsans Nj stone no,sd
10 Re aole 10 ANNOUNCE the acsuA snonnt 81 neal
witch The nsts claas stars .end to this gtooe On
K little consideration viii show ne enoTmous
dlficnIty Of The problem. A very delicate tner.
uoueter placed at Eight 10 The open nlr reSpouds
q ssh .noy 10
IouR ago, Gilbert White. Of selboins, noticed
now lne thermometer rtsea AZ ni2nt as cloudf
naIa oyerhend lard tinkA az the heavens gyoN
clesrer. But, IL the science OF meteorology nls
plorre,sed, men hhve Observed that chanR"s
mech lets ob74ous than these AFFECT the tnermome-
lei. On each Of tNo nights the SKY may be bela-
tfplly cIea,, the door OF hea1en s.th'ct inla!d
Win ratirtA Of bright colo. and yet The condition
q the atr may be 70 a,nerens that On one night s
space, WHILE on the other. ~ unseen presence ID
mid a3r checks the escaping heat and makes the
:tbe he.ren1 hreat open to theif highest" lnere
IL thus the me4t essential d6erecce IN tha clrcun-
stances under which the etel!ar heat wouid os
yel which cuts OF the escaping earth nea', uust,
10 psIt at leaAt, trnuence the hest which s Sent
to the earth from beJo ond the stellar 1paces
y. an ingenious s1rane euent Mr. Stone was en
abled 10 Overcome THIS difficulty II greas pa1s a1t
10 secure that which 70 dengaIetn tins tou OF hi
man OF sctence. reliable zero. Let not the uu
iLiated be copsounded By tnla mystic word,.i
| eld Of 1ale OK ueasntlcg. tape. To know
star serdl us heat At any Monent We nust kno'
what heas our Instruments ~onld show before II
ceisicG the star'a hest; other wise, what arc Y
10 meakure irom: uut. ss wo nave SAID ~
in1lfal heat u continually vatyng. WHAT III
h.a @ e &c sg 1cs 70 W Rrsf sa7e
| space 70 specify. hut tnese n1so he oyetcame-
Al lss'. altar enormous labor. tie heas receive
Arctnrus, the leading brilliant Of The uerdsmar
and Vega, tie eelef s.as q the L}se, a1s tue r.
otss 1ssr xta y MI; Mt sSs sr FsH ann ue1aeht
lorg since determined that these GtA<s are Of equi
splentor; but Arcturns shiueA With q rudy yeuo
ea eepp.Fed 70 ,se eeam of hSaif @ polshed sse
[ The eAtlmates OF their heat correspond with th
aspect Of these orbs- The nelJ Alclnrus senia .
about twice a. much heat as the bl7la VeR.
Minute indeed Ia the quantity Of heat recsise
from either star, even ArctuIQs haEln9 q ans
healil euect corresponding 70 ont about =
e0o, eoulh part oi q degree Fahrenheit Or. II
1 stones renaIEH The rEalt may bs otnesF1i
sta,ed ~ soIiows: The heat received from Arctl
rus Is Eapsiol5 the same % that from the face Of
thrce>irch lrou cube full OF boiling water ST dh
70 the vor,ds which ctcls around these bill
ians shtaIs or sun doubtless suppues no laIzer
f2s7 e. .s
Abound AFct9rus arc wefewaFmed word
Lou,,shed by the rzJs which belong 70 the red et
| OF ln6 spectrum. 1H0HE W0lCu C4Ela A4uul
yegs, II equally distant, are ltaa ptntifullE su
pied with neat o. the other hand, II one o.
| speculate 90 COZ ndehlly a. TO The 9zsta OF the
worlds IA 10 regard photography a an art prs
used among their lnhaoltsnts, then mnst the p:
rlo warmed b5 A1c:ulus VT longer Tor their pt
rata than those On whom the brilliant fe
researches we have been dealing With eu9tf
strange thoughts Tor our consideration. T
question OF the plurality Of worlds had seem
i, rerplex,Dg eIonRh when We considered men
, The strangely vbTtous conditions u1ter which
= Ing creatures rust snbsst in she dldeseut o!
which circle round our aun. But when we ct
Template the yarleties presented among the d <
stars, the mind il lost IN the attempt 10 concsl
the enornous range Of variety which must char
teTtze the rhces OF living creatures subAIstlhR
= 1 luI1tnay1fe. e