357 



-* (^. 320.) iser^l. ^o^moö <8b. 111. a. 81 uub 117 

 (5lnm. 34). 



^^ ('S. 321.) An account of theEarl of Uosse's great 

 Telescope p. 14 — 17, wo bie Sifle ber im ^»lärj 1845 von 

 Dr. Oiülnufou uub @ir 3^1"^'^ ©outl) aufaelöflen ^tebel geaeku 

 wirb. »Dr. Robinson could not leave this pari of his sabjecl 

 wilhout calling attention to the lact, that no real nebula seemed 

 to exist among so many ot these objects chosen without any 

 bias: all appeared to be Clusters of stars, and every additionai 

 one which shall be resolved will be an additionai argument 

 against the cxistence of any such.« @ c^ u m a d) e r, 5(ftr. 

 9(ac^r. Tio. 536. — 3u ber Notice sur Ics grands Teles- 

 copesdeLordOxmantown, aujourd'hui Earl of Rosse 

 (Ribliotheque universelle de Geneve T. LVII. 18i5 p. 

 3i2— 357) Ijei^t e^ : »Sir James South rappeile que jamais il 

 n'a vu de representations siderales aussi magnifiques que Celles 

 que Uli offrait l'instrument de Parsonstovvn; qu'une bonne partie 

 des nebuleuses sc presentaient comme des amas ou groupes 

 d'etoiles, tandis que quelques autres, ä ses yeux du moins, 

 n'oüraient aucune apparence de resolulion en eloiles.« 



2« (@. 321.) Report of the fifteenth Meeting of the Bri- 

 tish Association, held at Cambridge in June 18i5, p. 

 XXXVl uub Outlines of Astr. p. 597 uub 598. »By far the 

 major parta, fa^t Sir 3ol)U jperfc^el, »probably at least n:ne 

 tcnths of the nebulous conlents of the heavens consist of ne- 

 bulae of spherical or elliptical forms, presenting every variety 

 of elongation and central condensation. Of these a great number 

 have bcen resolved into distant slars (by the Reflector of the 

 Earl of Rosse), and a vast multitude more have been found to 

 present that mottled appearance, which renders it almost a 

 matter of certainty that an increase of optical power would show 

 thcm lo be similarly composed. A not unnatural or unfair in- 

 duction would therefore seem to be, that those which resist 

 such resolution, do so only in consequence of the smallness 

 and closeness of the stars of which Ihey consist: that, in short, 

 they are only optically and not physically nebulous. — AUhough 

 nebulae do exist which even in liiis powcrful telescope (of Lord 

 Rosse) appear as nebulae, wilhout any sign of resolution, it may 



