THE NEBULA IN ANDROMEDA. 'J^ 



The following table contains the right ascension and declination 

 of the chief points of interest in the nebula. It should be ob- 

 served, that, where the light is faint, the positions given are liable 

 to a considerable degree of uncertainty. 



A.R. 1850. Dec. 1850. Remarks, 



h. m. 8. o I 



1 30 50 -f-39 17 The axis may be traced to this point. 



2 31 30 39 27 Light blends with the star-dust which fills the field ; 



the axis is about 5' broad and not distinguishable 

 without attention. 



3 31 55 39 38 Axis suddenly widens and becomes brighter. 



4 32 12 39 45 Light brighter and unequally diffused, with dark open- 



ings ; many stars in clusters. 



5 32 08 39 55 Suddenly much brighter. The peculiarity noticed in 



4 is more strongly marked. The position given is 

 that of a spot much brighter than any other part of 

 the field. 



6 32 15 39 58 Axis 12' broad and distinctly marked. The light is 



more evenly diffused, brighter and more nebulous in 

 its character, especially on the following side. 



7 34 30 40 00 Companion nebula h 51. It is certainly within the 



light of the great nebula ; in the field preceding it 

 are multitudes of very small stars, on a ground of 

 very evenly diffused, milky nebulosity. 



8 32 36 40 07 Southern extremity of the inner canal. 



9 31 40 40 10 Light is here unequally diffused. On the side fol- 



lowing the axis, it falls away more rapidly than on 

 that preceding. 



10 33 40 40 15 The northern part of the field is brightest. Both 



canals are well seen in this parallel. The light is 

 shaded off from them evenly on the preceding side. 



11 33 15 40 20 Both canals beautifully distinct. The light between 



them is two thirds as bright as it is on the inner side 

 of that which is nearest to the nucleus. Both large 

 and small stars are very abundant in this parallel. 



