358 



very reasonably be doubted whcthcr ihere be really any csscn- 

 tial physical dislinction betwccn nebulnc and Clusters of slars.« 



27 (321.) Dr. 9Md)ol,^rofeJTorber2lftronomie ju ©laögow, Ijat 

 btefen, auö Castle Parsonslown batirten 93rtef tu feinen Thoughts 

 of some important points relaling to tbc System of 

 the World 1846 p. 55 befannt gemacht: »In aecordance with 

 roy promisc of communicating to you the result of our exami- 

 nalion of Orion, I think, 1 may safely say, that there can be 

 bitte, if any doubt as to the resolvabilily of the Ncbula. Since 

 you Icl't us, there was not a single night when, in absence of 

 the inooii. the air was fine enough to admit of our using more 

 lhan half the magnifying power the speculum bears: still we 

 could plainly sce that all about the irapczium is a mass of 

 stars; the rest of the ncbula also abounding with slars and 

 exhibiting the characteristics of resolvabilily strongly marked.« 



28 (©. 322.) 3Jergl. Edinb. Review Vol. 87. 1848 p. 186. 

 2 * (©. 323.) Äoömoä 95b. 111. ©. 183 unb 212 (9tnm. 84). 



30 (©. 323.) Äoöntoö 93b. 111. 0c 44. 



31 (©. 323.) Newton, Philos. Nat. Principia raathe- 

 malica 1760 T. III. p. 671. 



32 (®. 323.) Äoömoä 93b. I. ©. 146. 



•? (®. 323.) Äoömoö 93b. I. ©. 412 (2Inm. 66). 



a * (©. 323.) ©ir 3odn Jjerfdjet, Gapretfe 5 109-111. 



35 (©. 325.) &ie ftunbamente biefer $lufjäl)limg erl)eifrf)en 

 l)ier eine Erläuterung. Die bret (üafaloge »on £erfd)el bem «Bater 

 enthalten 2500 Dbjecte, näntlicr; 2303 befrei unb 197 ©fem Raufen 

 (Gabler, 21 ftr. ©. 448). 3n ber fpateren, weit genaueren Wu- 

 fterung beö igobneä (übservations of Nebulae and Clus- 

 ters of stars raade at Slough wilh a twenty-feet Reflcclor 

 between the years 1825 and 1833, in ben Philosophical 

 Transactions of the Royal Society of London for the 

 ycar 1833 p. 365 — 481) würben biefe £al)len »eränbert. £>lm-- 

 gefäfyr 1800 öbjeete waren ibentifdj mit benen ber brei früheren 

 Kataloge; brei= biä »ierljunbert aber würben vorläufig antfge= 

 Kbloffen, unb mefyr alä fünfbunbert neu entbeefte in Ofectafcenfton 

 unb 35eclination benimmt (©truve, Astr. stellaire p. 48). 

 3)a$ nör blicke 33erjetdmij} enthält 152 ©rern&aufen, fc-lglid? 

 2307 — 152 = 2155 Webelflecfe; aber unter ben «Nummern beä 



