Tie. 50. Fig. 51. 



THE STELLAR UNIVERSE. 



CHAPTER VI. 



Spiral nebulae (continued). 86. Number of nebulae. 87. The Dumb- 

 Bell nebula as observed by Sir J. Herschel and Lord Rosse. 88. 

 Various nebulaa figured by the same observers. 89. Large irre- 

 gular nebulae. 90. Rich cluster in the Centaur. 91. The great 

 nebula in Orion. 92. The great nebula in Argo. 93. Magellanio 

 clouds. 



IN fig. 33 is reproduced a drawing by Sir J. Herschel of a large 

 nebula having a diameter estimated by him at 3', or a tenth of that 

 of the moon. This object is situate in K A 9 h 22 ra N P D 67 45', and 

 therefore near the northern part of the constellation of Leo minor. 

 This is described by Sir John Herschel as a very bright extended 

 nebula, with an approach to a second nucleus, which, however, is 

 very faint. 



Fig. 34 is the same object as shown by Lord Rosse's telescope. 

 This object was first observed with the great telescope, 24th March, 

 1846, when a tendency to an annular or spiral form was discovered. 

 On the 9th March, 1848, in more favourable weather, the spiral 

 form was distinctly seen in an oblique direction. The nebula wa& 

 well resolved, particularly towards the centre, where it was very 

 bright. 



LARDNER'S MUSEUM OF SCIENCE. D 33 



No. 102. 



