Observations of 500 Nebulae. 



73 



obtuseang . . . obtuseangular 



p preceding, precedes, etc. 



par equator-parallel 



pos angle of position 



rectang .... rectangular 

 r resoluble, resolubility, re- 

 solves, etc. 



rr partially resolved 



rrr well resolved 



Rd round 



sev several 



S small 



Sr smaller 



s south 



sf south following 



sp south preceding 



stell stellar 



trap trapezium 



var variable 



v very 



vv very much 



* a star 



* stars 



d* double star 



trip* triple star 



comp* comparison-star 



O planetary nebula 



(J) globular cluster 



J '. . triangle ; forms a triangle 



da difference of right ascension 



JS difference of declination 



AN "Astronomische Nachrichten". 



BB Bonner Beobachtungen. 



D'A D'Arrest. 



GC General Catalogue of Nebula? by J. Herschel, Phil. Trans. 1864. 



H Sir W. Herschel , Catalogue of Nebulas by Auwers in the Konigsberger- 



Beobachtungen, Vol. 34. 



h Sir J. Herschel, Catalogue of Nebulae in Phil. Trans. 1833, Cape-Cata- 

 logue, GC . 



Ph. Tr. 33 . . J. Herschel's Catalogue of Nebulae. 



Ph. Tr. 61 . . Catalogue of Nebulas by Earl of Rosse in Phil. Trans. 1861. 

 Ph. TV. 64 . . GC in Phil. Transactions 1864. 



R Earl .of Rosse, Rossian; Catalogue of Nebulae in Phil. Trans. 1861. 



Sf . Schonfeld, Beobachtungen von Nebelflecken und Sternhaufen, Mann- 



heim 1862. 



SN Siderum Nebulosorum Observationes etc., Auctore D'Arrest, Havniae 1867. 



Nova Acta Reg. Soc. Sc. Ups. Ser. III. 



10 



