358 



very rcasoiiably bc doiibted whclhcr ihere bo really aiiy essen- 

 tial physical distinction bi'twccn nebulae and Clusters ot slars.« 



^' (321.) Dr. 9?i(^ol, «VrofeiJor ber 2I|lronomie ju ©langen), l)at 

 bUfen, «i\\6 Castle Parsonslown batirten $8rtef tu feinen Thoughts 

 otsoriie iraporlant points rclating lo the System ot 

 Ihe World 1846 p. 35 befannt gemacl)t: »In accordance wilh 

 my promisc of commiinicating to you the result of cur exami- 

 nation of Orion, I Ihink, I may safely say, Ihat there can be 

 liltle, it any doubt as to the resolvabiiity of the Nebuia. Since 

 you Ictt US, Ihcre was nol a siugle night when, in absenoe of 

 the moon, the air was finc enough lo admit of our using more 

 ihan half the niagiiifying power the speculum bears: still wo 

 eouid plainly see Ihat all about the Irapeziuin is a mass of 

 Stars; the rest of tlie nebuia also abounding with Stars and 

 cxhibiliiig the characteristics of reso'vabilily slrongly marked.« 



^* (S. 322.) ^iXi^i. Edinb. Review Vol. 87. 1S48 p. 186. 



'- (©. 323.) Äoönioö 33b. 111. ö. 183 uiib 212 (Ofiim. S4), 



"^ ca. 323.) jto^moö 35b. 111. @. 44. 



•^' (®. 323.) Dtewton, Philos. Nal. Principia mathe- 

 ma lica 1760 T. 111. p. 671. 



" (®. 323.) Äoömoö 33b. I. e. 146. 



" (®. 323.) Äoömoö 5gb. I. e. 412 C3liim. 66;. 



'* (@. 323.) Sir 3ol)n .nerfcbel, Sapveife 5 109—111. 



" (*£. 325.) 2)ie guiibanifiue biefcr 2lufjäl)luns) erl}eifd}eu 

 Öter eine (Sriduterung. 2)ie brei ^rttaloae von .^erfrfjel bem 23ater 

 entfjairen 2500 Öbjecte, nrtmlidi 2303 9(ebet unb 197 (Srernl)aufen 

 (W abier, 21 (tr. S. 448). 3n ber fpdreren, weit genaueren ?Wn« 

 fterung beö Soljneö (Observations of ISebulae and Clus- 

 ters of Stars made al Slough with a twenty-feet Reflector 

 between the years 1823 and 1833, in ben Philo sophical 

 Transactions of the Royal Society of London for the 

 year 1833 p. 363—481) luurben bie\e ^aljlen veranbert. Oi)n-- 

 9efdl)r 1800 öbjecte ivaren ibentifrf^ mit benen ber brei ftütjeren 

 Satrtlc^e ; brci^ In? uier(}imbert aber »würben üorldufi'ci au^ge^ 

 fd)loflfen, unb mel)r M fiinfl)unbert iien entbecffe in Oiecrafcenfton 

 nub 3)ecliuatton beitimmt (grruoe, Astr. siellaire p. 48). 

 2)aö nörblicl)C äserjeic^nif enthalt 152 ©tern^nfeii, fclgUd) 

 2307 — 152 = 2155 9?ebelflcd'c; aber «nter ben Ohimmerii be^ 



