¿) 



13 — 



-en 1833, y los n. os 2308, 4015 en el Catálogo africano ó Catálogo del Sud. 

 Véase Sir John Herschell, Cape Observations , p. 51-128. 



(81) Pág-. 222.— Dunlop, en las Philos. Transad, for 1828, p. 113-150. 



(82) Pág. 222.— Véase el Cosmos, t. IIÍ, p. 63. 



83) Pag. 223. — Véase An Account of (he Earl of Rosses grcat Telescope, 

 p. 14-17, donde se cita la lisia de las nebulosas resueltas en el mes 

 de Marzo de 1845, por el doctor Robinson y South: «Dr. Robinson 

 could not leave this part of his subject without calling altenlion lo thc 

 fact, that no real nébula seemed to exist among so many of these objects 

 chosen ^vithoul any bias: all appeared to be clustcrs of stars, and every 

 additional one which sliall be resolved will be an additional argument 

 against tlie existence of aiiy such.» Véase Schumacher's Astronomischc 

 Nachricíiten, núm, 536. Léese en la Memoria sobre los grandes telesco- 

 pios de Oxmantown , hoy conde de Rosse (Biblioteca universal de Gine- 

 bra,^t. LVll, 1S45, p. 342-357): «.South dice que jamás yió representa- 

 ciones siderales tan magníficas como la que le presentó el instrumento 

 de Parsonstown; que una gran parte de las nebulosas se presentaban 

 como haces ú grupos de estrellas, mientras que algunas otras á sus ojos 

 por lo menos, no mostraban apariencia ninguna de resolución en es- 

 trellas." 



(84) Pág. 223. — Report of the ftfteenth Meeting of (he Brüsh Association, 

 held at Cambridge in June 1845, p. 36, y Outlines of Astron , p. 597 

 y 598. «By far the major part, dit sir John Herschell, probably al least 

 nine-tenths of the nebulous contents of the heavens consist of nebulaí of 

 spherical or elliptical forms, presenting every variety of elongalion and 

 central condensation. Of these a great number have been resolved into 

 inlo distant stars (by the Reflector of the Earl of Rosse), and a vas^ 

 number more have been found to possess that motlled appearencc, which 

 renders it almost a matter of ccrlainty that an increase of oplical powc¡- 

 Avould show them to be similarly composed. A not unnatural or unfair 

 induction woald therefore seen to be, that those which resist such reso- 

 lution, do so only in consequence of the smallness and closeness of the 

 stars of which they consist ; that, in short, they are only oplically and 

 not physically nebulous. — Although ncbulse do exist which even in this 

 powcrful telescope (of lord Rosse) appear as nebulic^ without any sign of 

 resolution, it may very reasonably be doubted whcther there be really 

 .any essential physical distinction betwecn nebulíe and clustcrs of stars.» 



(85) Pag. 223. — El doctor Ts'ichol, profesor de Astronomía enGlasgow, 



TOMO ni. 35 



