736 EAEL OF EOSSE ON THE CONSTEUCTION OF SPECULA OF 6-FEET APEETUEE, 
Number in 
Herschel’s 
Catalogue. 
Number 
of times 
observed. 
2236 
2237 
2 
2241 
16 
2242 
2245 
12 
Description. 
2248 
2250 
2257 
2258 
2260 
2261 
2262 
2264 
2267 
2268 
2271 
2273 
22741 
2275/ 
2299 
2300 
2301 
15 
2278'! 
2279 1 
2280 f 
2281 j 
2282 
2284 
2290 
2291 
2297 
one 
of 
Oct. 
r 
3 or 4 conspicuous *s in it ; not in a line between Herschel’s two #s, tbe p 
which is d. 
S; vF; E. 
Since the publication in the ‘ Transactions ’ for 1850. The outlying portions in the pub- 
lished sketch are parts of spiral branches. Figni’e 40, Plate XXX. represents it 
as seen on a very fine night (Sept. 16, 1852), with a freshly polished speculum 
which defined very sharply. Oct. 2, 1856. All the details in Mr. Stonet’s drawing 
very weU seen. Oct. 16, 1857. The spiral arms and the *■ in centre distinctly seen. 
23, 1857. E ; pB ; nucleus ; another 6' s ; S ; vF. 
Sketched 4 times. Nov. 5, 1850. I saw two knots and a dark space between them. I think 
the neb. is connected above the dark space. Nov. 27, 1850. 2 knots seen nearly 
n. and s, and a dark space between. Aug. 24, 1851. 2 knots and a dark space 
between, connected above by neby, as in sketch. Sept. 26, 1 854. Certainly a spiral ; 
some *s at moments visible. Oct. 17, 1854. Spirahty distinctly seen. I thought 
the coil doubled in upon itself more closely than shown in Mr. Stonet’s drawing, and 
that the central Imot had a stellar nucleus. The whole neb. looked sparkling, though 
I could not see its separate #s. Nov. 22, 1854. Central nucleus stellar. The outer 
edge of the coil, just where it joins the external nucleus, seems brighter than the 
rest. Oct. 15, 1855. Seen to be spiral, as before. See fig. 41, Plate XXX. 
Oct. 8, 1855. eF ; mottled and irreg. outline. 
Looked for 4 times ; not found. 
Nov. 4, 1850. Nucleus; a F. neb. f. about 2'. 
Oct. 17, 1854. E; pB; mbM. 
Nov. 13, 1854. E; bM; a F. * p. 
Oct. 24, 1857. Edge ragged ; F. nucleus. 
pB ; E ; mbM. 
A F. suspicion of a dark ring round the B. centre. 
Nov. 17, 1854. IE. n. and s. 
Nov. 22, 1854. pL ; E. A * precedes the nucleus (1-inch single lens) ; sp. this object 
there is a vS. E. neb. 
Aug. 24, 1851. A * with a S. neb. in contact. 
Oct. 12, 1855. A 
Oct. 24, 1857. 
Oct. 7, 1855. 
ABE; gbM. 
* p. touches the neb. 
A 
httle np. is another neb. vvF. 
. 5, 1850. 
Pos. 
Dist. S 
a/3 
114° 
5' 
30" / 
ay 
128 
5 
34 / 
r# 
/3 
84 
1 
44 / 
d. 
6 
2 
13 
bM. 
cl. 
Oct. 
pB; 
Oct. 
2 
11 
Oct. 
Sept 
Aug. 
31, 1855. pL; pB; has a F. but pretty sharp nucleus; edges ragged. 
pmE. 
12, 1855. pL ; B ; E ; gmbM. A decided dark lane runs through it in the direction 
of its major axis. The neb. is rather narrower in the middle of its length, and 
spreads out laterally towards its extremities, fading away very gradually. Nov. 3, 
1855. Seen as before ; dark streak through centre quite plain. Sept. 9, 1856. Seen 
very well ; dark lane through centre quite plain, especially with highest single lens. 
Oct. 3, 1856. I think I see right-hand side of centre to be composed of ^^s. It is 
brighter than the opposite side. See fig. 42, Plate XXX. 
17, 1854. E; pB; bM. to a nucleus. 
. 10, 1849. 2 S. «^s near M. Oct. 7, 1855. No nucleus ; 2 s^s seen steadily. The 
centre of neb. looks darker than the rest. Oct. 8, 1855. There certainly exists a 
dark bay in the centre of the neb. between the two ^^s. 
24, 1851. A S. lenticular neb. 
