NEBULA, CLUSTERS, ETC. 2d 



Herschel, W. : Abstracts ov Memoirs — Continued. 



AD. Vol. P. 



1814 104 251 III. Of Stars with nebulosity of various shapes attached to 

 them. 



252 Fourteen such objects noted. 



Now, if we admit a contact between these nebula? and the 

 stars, it deserves to be remarked that stars in the situa- 

 tion of these fourteen cannot have been formed from their 

 adjoining nebulosities ; for a gradual condensation of the 

 nebulous matter would have been central ; whereas the 

 stars are at the extremity of the nebulae. Their connec- 

 tion is then due to some motion either of the star or of 

 the nebulas. If the nebulosity should subside into the 

 star, it would give an idea of the growth of a star. 



253 IV. Of stars with nebulous branches. 



Three cases noted of a connection between stars and nebuhe 

 and reference made to P. T., 1811, pp. 301-311, for 

 further examples. 



254 V. Of nebulous stars. 



Thirteen aie noted — see also P. T., 1791, p. 71. 



255 Nebulous stars are not only connected with a nebulosity, 



which, from its great regularity, might be taken for an 

 atmosphere, but also with the luminous appearances be- 

 longing to the nebulous matter which isso widely expanded 

 in various regions of the heavens. 

 What has been said of the gradual condensation of the 

 nebulous matter in the case of extended nebula?, is sup- 

 ported by a much greater number of nebulosities in a 

 spherical form. [See P. T., 1811, pp. 301-8.] 322 cases 

 are there mentioned, in which the fact of the gradual 

 condensation is rendered so evident as not to admit of a 

 doubt. 



256 Nebulous stars only differ from round nebulas containing a 



nucleus, in the degree of condensation. 



256 VI. Of Stars connected with extensive windings of nebu- 



losity. 

 Three cases noted. 

 The nebulosity which has been shown to be connected with 



stars, may be fully proved to be of the same nature as 



the general mass of nebulous matter. 

 Stars of this (lass are in a condition of growth. 



257 Possibility that stars were originally formed by a conden- 



sation of the nebulous matter. 

 We may conceive both the generation and growth of stars 

 to be the legitimate effects of the law of gravitation, to 



