29 2330 3 0

tory, Cape of Good Hope. The observations (except those of Febr. 10) were made with a Ring Micrometer; the faintness of the nucleus, the small aperture of the telescope (6.9 inches) and the unsatisfactory illuminating arrangements prevented the employment of the parallel wire micrometer (except on Feb. 10).

The stars of comparison a, 6, c, d, E, f, of which the places are given in the accompanying table, have

account of daylight, to obtain meridian observations of these stars sooner.

The mean place of the 71/y Mag. Star, employed as a Star of comparison by Mr. Ellery on Febr. 14, is also given , and results from 2 meridian observations made at this observatory. The corrections to give ap- parent place on Feb. 14 for this star are

Act + 0 ~ 5 2 dN.P.D. + 3"g.

Cape Mean Time Right Parallax No. I North Polar Ascension Factor 1 :ls, I Distance

I No. of 1 Obs.

Parallax Factor

1 123"43' IS"53

f 1 123 31 30.78 5 123 11 33.93 5 1 123 I I 23.44 7 122 44 20.93 I 122 11 17.23 3 122 10 52.86 3 122 10 57.19

I 0 I 121 32 52.17 ~ _ -

$0 4760 2

$0 4434 4 $0.4145 4 +0.4145j 5 $0.3888 5 +0.34351 I $0.3805 3 $0.3806 l 3 $0 3340, 1 0

o 20 22.16 o 20 31.53

The observations are not corrected for Parallax.

Mean R . A and N . P . D of the stars of comparison.

$0.0627

$0 0641 +o.o616

$0 0641

Comparison Star

n n b

Lacaille 94

a? Lacaille 290 G SCdptOriS

C

e f

- Lacaille 384

a (Smag) b (8 mag.) o 17 34.16,

Lacajlle 94 o 21 58.491 c (S mag.) 0 34 32.91 ct (8 mag.)

G Sculptoris ; o 56 42.441 6' (9mag.I j I 7 49.071 f (8 7 mag.) I I I 10.041

Lacaiile 384 1 I 17 5 5 S8l

I Oh 2"'52R80, I

Lacaille 290 0 57 41.581

I 3

m 2 1878

122 12 37.301 Cape obs. 1880 122 2 32.98' 121 34 17.091 CapeD Is78 ' I

Mean R . A and N.P.D of observed with comet at Melbourne on Feb. 14 (7.8 mag.) l z - 1 i~0~20*02 A = - 122"29'46"79.

Royal Observatory, Cape of Good Hope, 1880 July 3. Dmid GdZ.