THE STELLAR UNIVERSE. 



B 81 30'. It is therefore situate about midway between the bright 

 star Prooyon and the shoulders of the constellation Orion. This 

 object is described by Sir John Herschel as a star of the 12th 

 magnitude, with a bright cometio branch issuing from it, 60" in 

 length, forming an angle of 60 with the meridian, passing through 

 it. The star is described as ill-defined, the apex of the nebula 

 coming exactly up to it, but not passing it. 



Fig. 51, p. 33, is the same object as seen with Lord Rosse's tele- 

 scope on 16th January, 1850. Lord Rosse observed that the two 

 comparatively dark spaces, one near the apex and the other near 

 the base of the cone, are very remarkable. 



In fig. 52, p. 193, Yol. vii., is represented a nebula situated in 

 E A ll h 5 m , IT P D 34 3', having a diameter equal to about the 90th 

 part of that of the moon. It is drawn and described by Sir John 

 Herschel as a large uniform nebulous disk, very bright and 

 perfectly round, but sharply defined, and yet very suddenly fading 

 away into darkness. A most extraordinary object. 



Fig. 53, p. 193, Vol. vii., is the same object as shown by Lord 

 Rosse's telescope. Two stars considerably apart, seen in the central 

 part of the nebula. A dark penumbra around each spiral arrange- 

 ment with stars as apparent centres of attraction. Stars spark- 

 ling in it and in the nebula resolvable. Lord Rosse saw two largo 



Fier. 55. 



and very dark spots* in the middle, and remarked -that all round 

 its edge the sky appeared darker than usual. 

 42 



