, 1870-08-28

int ~ =. s st1,, znusreuty cpnsidesab1e distance
from one another VIC shall hha note Partial
systx1ns iu the gsnaralsystem Of the nuissEse.
~ Within few years, even 'ho mo'loa ~ . tuo
sotar system in space has been GraveI5 aouoe-
ed Ly 20 distinguished m astronomer as AIRY,
slnwiuc that thr eyiItncetheu used, BEauleja
stars aluue. Was Insufficient to produce COM
ple,c co1.yction in bis mind. ...4
!. Indeed, am Inclined to tie opinion tnat
Brailey's observations will econ need to %
dropped a. the general standard; and thlnk
those Lts, qualified to judge agree With me.
We shall reach our standard position 1of 9l2o~
1ey's time By cau3ing Bessefs, Afgelanssess s'
usipe the best fundamental dete1mluauons OF
the present lay: for We cannot by interpolat-
ing TOW ards Bradley make tho present fanda-
mental catalogue agree with those about Ao@''
Just mentinned-
aThe impctfection Of Bradleys
Instruments is the main cause Why our pres.
ent stat-plsces in the ephemefsdes do NOT
agree with observation; this state Of thinss
lion Of Bradley, but not entlreiy cured. Ea1'y
observations extending fsz into ths n9utn; julie, =
hcmssrheres, are-ve3 scant5. ines nes,u,I'
is true, with Lacaile. but re ootn 'e1 auu
LAcale's tlae till lSsd, no considerable sesaes
OF oteeryaticLs we're msde in the southern
hemisphere tot the earthe, or below ABOUT
s. Q to 4oe Of south des'instlon; then began
johnson, At St. Helena;F allows, Henderson and
Maclesr, at The Cape Of Good Hope ;and Tay-
los, at Madrss so that, between 1925 snt
1870, there are many southern series. lnclud-
ing ,lr1 many of the brig httr stars.
'.These, now that M entire generation has
paased, will serve ~ landmarks for their
lime; and it IL to be hoped that that region
| will soon Le taken up with thorouShneas And
| comueteness. Dr. Goulds expedition wl.A
! doubtless accomplish much OF the Hrelini-
nary work, this rre-ent plan being similar to
the older once. with eomr lmKrossusn:s).
and perhaps good rha5s of siIo c"npl:ss
is in rroEress in the southern hem'sracse,
and At AEdras-"
ak can be seen, from what precedes. that
1ntnation OF stars to tho 9th magnitude in
elusive. It is to BE- complete, which no
seriee before il has been to have the ac-
enrsey Of about half.a-'econd Of space,
I Which the best among the earliest catalogues
cAnonly receive, by a thorough discussion
and fe-reducsion, and to be thu result Of caru-
est cooperation among Astronomers. who ara
ey q I'll $.
ant, too. AZ airofding the basis OF compare
aens with nearly ill previous good work, "a
giving ro.--a liked points for great quantity
it, ta1n an old anthofy. ..ehap. .a s II 1s:o. -
"TLe programme which Highlander has
prepared Is printed in the Q,aTk7ss Of the
| pal points are the following:
II. The region undertaken + for the pres ent
between . and sos Of north declinatlcn; the
rtass included arc atI thoss Of tie tirzt nine
magnisuder, ursn6 the preliminary survey of
the Bonn Observatory.
- This region il divided into zsnea,
from 80 to 1Da IN breadth, among difsrent
olreryatorie-. NeIsipgforz, Fam, Berlin, and
| Leipzig. which are ptll manned, taxa zouaa
Of TO- esrh. wL.is kazan, Dorra,, Christ>na.
Chicago, Cambridge F, take s. each. :1asu-
hein, has 6, Seuchatrl al,d Palermo 8: eaca.
Owing, however, TO the vsrYing humber o.
stars III different declinations, tho stzea VI the
xtnes are not quite in proportion to their
O I numbers,
'3 starr to the magnitude 30 il in tho
| Bonn. DuFchnnhtefntE only, and all fainter
| stars observed by DerRtE, L1lahde, ArSetander
= lin his northern Eones). or strive, arc to b.
l. included.
n IL. Eve.y star il to be ohseryod twiea-
three times il the two observations I!saE1ee-
j.. and the otI4ery atius reduced to l6i1.U
~ as. The observations are diffrseutial, aud
70 arc to be referred to list OF $50 stats, to bo
- Observed 4: rnlao"a. Th:- il necessary Tor
- c,,nlletr unity il. ths s'eEk Of different ot-
- l servers.
y rs. 1t II recommended to diyi,ls the zoce5
- into somewhat more HaEEo~ os.-a for cuuycu-
u icnce in re5uc.ion. and not to observe .,ora
j; than two hours in succession to ayoll too
~! ~ great fhtiEue aud y1rlOls errors FROM eLau6o
~ ~. | Of Instrumental position OF clock.Iate-
10 10 -. Two OF three zero easzs aru to be Oh
- served before and after each xons.
- "A. Three or -four wires for 4. It. and two
| ->NlN- =
lo the eiToLoE5al'iAc tEethoa IL used. oie group
nf Of wires will be enonst Caro- must b- taken
at 10 get accurately ths n"ah1 u feaMsasE the
nj two mrf'-eofes 70 tGul. Esrn = hlne.o ri
! a cFoteofH can, NJ 'ne eo'sfte'fon u ene opse1'
cf. be emps,Eea. ,, :.
mt i'2note etalr S,t ~ ~ S. ~ 40 :.
I'd sfInsr foths"nee Aes!a "uste 2ttafe ~, ~
Is taken fhs FFea..f conpo,.snt' ol .no n''''''
cs ot tne t"o Vt tne l'teer'"nh: ~ 'us'ance !.
ii. IL Az rrhen,e1'e " sai'Aeic a'2Rs - u
ar u pnhl1: ~" " fhe roele1s' ..
N, III. All osrefFafsoas nauss oe aeeamtanie<
he with Careful uetai m11'ati"n oi mas'hi'ntie
IL. rak'nE ~ tAt1s lie ianh i'nfcti's'aatssnhs
IN IL. 10 nh'1 the ftia'i"n '.e ~sen Tue st'n
,re offervrtr determination u isiht -'afs anu
- bright staEs, the variable st1rs are - le EeG
iS, uIar'E observed
~ III Regular animal reports arc teI:ucd:et
~ 10 tbih programme Alee!allt.t a'iaa var
nv oua suEeest!o!e: ..,.-- -.
lnA! ~ oa'sh 's,''f1 10 uec tus sS'.s. sain
in- late .or cs,selNA1"nS y. '.e ss essrnE ts.E
of tnat 'ne o.te1se. a."1t e.s"e '.. e.'et. - n
It Ttu pon f.. .l ' .nr ..'...i,',,i,. w.
Ihe ~. SUI se:s n.a Ns.o ;s,.4o
ah ,nst ha M s1ie aIs Ha s ~
jus - ~, rs,. 49, r.i,t;S,. ~. "
aeu ;;.s aM ~ W. =; 'A .,.La. '.,s '.,,1 e
cd, r,'.s ,hs .,,,,,,..u ~ i, e ,I.;, ~.
is tnn n,ss. H. r,rn,u1fr 1nts
ne- n,;ned. H.. nn,ch n.r,. ,,,i,st
ta. tske,, tn observe MI the st,r TO lie ros.ri