| 
A. Gautier on recent Researches on Nebulae. 203 
Sir John Herschel’s catalogue of 1833, arranged in the order 
adopted by that catalogue, that is, according to their right ascen- 
sions. These observations are frequently accompanied, in the 
text itself, by designs rapidly executed upon wood, representin 
the characteristics of some of the nebula, among which are fif 
teen having a structure distinctly spiral. 
memoir is concluded with a list of thirty-five nebule of 
Herschel’s catalogue which have not been rediscovered in the 
course of the ordinary observations of Lord Rosse and his as- 
sistants, and to which it is therefore desirable that the attention 
of astronomers should be directed anew. e 
The drawings of remarkable nebule have been very faithfully 
engraved by Mr. Basire, as were those of the first memoir. 
pace observes however that the stars are frequently figured too 
arge, 
ber, 1862 7 
__it does not appear that the observations thus-far confirm the - 
ideas, previously put forth by some savans, as to the probability 
observed the more this investiga 
Mysterious and un chable. ! 
Il. Various gw cae and Articles relating to Nebule.—Mr. 
D’Arrest has announced, in No. 1879 of the Astr. Nachrichten, 
the existence of a third variable nebula, north of the constella- 
tion Taurus, This nebula had been seen before at the o ; 
