396 Scientific Intelligence. 



its full brilliancy in the interval between November 20 and 24. 

 At midnight on t Ik- latter day tin- light of the Mar u a> <>i gp-ater 

 intensity than that ot » Prtjuxi, noted of the Third magnitude by 

 Argelander. Its position does not appear to be recorded in the 

 usual catalogues of small stars; certainly not in those of Lalande, 

 Weisse's Bessel, Bode, D'Agelet, or in the Durchmustenntg of 

 Argelander. From an observation made by Mr. Hind at Mr. 

 Bishop's Observatory on December 13, its if A. for ISTti'O is -l h 



r-Royalor to any other Kngli 

 astronomer, although a telegram was sent to Dr. Littrow, 

 Vienna, and probably to oilier Continental observers. The hi 

 information of the sudden appearance of the new star was receiv 

 in England only in the second week in December, from t 

 public notices inserted in the Bulletin International and Compt 

 Rendus. This neglect is much to be regretted, as there w< 

 eight favorable evenings at Green wieh before December 9, wh 

 spectroscopic observations might have been successful! v nun 

 and of these at least two were near the time of the star's ma: 

 mum brilliancy. Prin 

 queuce of almost contir 

 few observations of the star have been made in this country. 

 When seen by Mr. Hind on December 1:}, it had receded to the 

 ;d\th magnitude, and was without a trace of color. The observers 

 in Paris were in< iv fortunate i i • ■ : rthe star 



was examined on December 2, during a bri. ! i it rval of clear sky, 

 by MM. Henry, Conm. and ('./.:,.. and • -urn isd of the ibth ime-- 

 mtude. Coder more favorable eiivumstanees. on December 4. M. 

 Cornu made some satisfactory observations of the spectrum of the 

 star with tin eastern e<piaton il of tin I'arU ( )hservatory, the 

 i that day being estimated at 4 5. The spectrum ex- 

 hibited ei- o , > \ _ ines on a lumii >u> gi und, with an 

 almost eunij to j ,ji i,n ,, , \ , j, ii^hr ween tin green oil 



the indigo M. Cornu saw no dark lines; if they had existed thev 

 must have been ver\ tine, and invisible ow in-- to the iaintness of 

 the light. 



Naming the bright lines according to (heir imensitv by the 

 Greek letters o to rt, their position* in the spectrum, in relation to 

 those of certain elements, may be readily s. n from the numbers 

 in the following table determined by M. Cornu: — 



i interesting fact 



M. Cornu rei 



farmation, that there are several coincidences shown in the preced- 

 ing table which have led him to the conclusion that the bright 



