WITH A FOURTEEN FEET REFLECTOR. 211 



Sir J. F. W. Herschel. "Notes on the List of Figured Nebulce," in the "Appendix" to the above 



paper. 



Plate XVI. Figs. 80, 82, 83, 84, 85, represent nebulae which offer some remarkable peculiarity of situ- 

 ation with regard to stars. Of these the most singular are IV. 41, (fig. 80,) and that of fig. 82. The lat- 

 ter, however, is very imperfectly expressed in the drawing. Indeed, it would be excessively difficult to 

 execute a drawing of such an object with any pretensions to correctness. In this, general resemblance 

 and character only has been aimed at, enough to express the peculiar feature of the object, which is a net- 

 work or tracery of nebulse following the lines of a similar network of stars. It is an extremely faint and 

 difficult object, and only once observed; but I do not think it possible I could have been deceived as to the 

 reality of the phenomenon,' especially since the brighter parts of the nebula are stated in the observation 

 to have been distinctly seen. 



60. A number of interesting results are deducible from the comparison of 

 these observations with each other^ and with those embodied in this paper, 

 some few of which I shall point out. 



61. The large nebula surrounding star 22 of h. 1991, appears to have escaped 

 the eyes of both the elder and younger Herschels. Unless we construe the 

 remarks of Sir Wm. Herschel in his paper of 1811, that "more faint nebu- 

 losities are following," as a notice of this nebula. But, had Sir Wm. Herschel 

 actually seen the nebulous companion, which, surrounding a bright star at so 

 short a distance from the principal triple nebula, at once renders the whole 

 system one of the most wonderful and instructive in the heavens, it is in the 

 highest degree improbable that he would have passed over, with so light a 

 comment, a fact more highly illustrative of his peculiar views than any of the 

 instances he has so laboriously collected. His remark, which seems otherwise 

 inapplicable as a description of this object, more probably refers to some 

 smaller and very faint nebulosities, at several fields distance ; one or two such 

 were marked by us as Novse, having no synonyms in the younger Herschel's 

 catalogue, but for want of proper instrumental means, their places could not be 

 settled. 



62. Measures of the triple star. The lines drawn on the star chart to mark 

 the directions of the components of the triple star, (see Art. 17; Obs. of Aug. 14,) 

 were transferred to the corrected maps, and, measured by an accurate pro- 

 tractor, gave the following results : A B,=21 r.5; A C, =15°.5, the latter not well 

 seen. Again, from the measured right ascensions and declinations, we have 



