242 Intelligence and Miscellaneous Articles. 



Right ascension. 



Declination. 



h m s 



/ 



= 5 24 1 



a=+ 18 29 



4 46 5 



+ 2 16 



4 44 37 



4- 14 1 



22 59 57 



+ 8 39 



23 11 6 



+ 48 15 



Magnitude. 



55 

 55 

 5 

 5-5 



There are a great number of others which cannot be resolved into 

 secondary lines, owing to their feebleness, but the principal lines 

 of which are sufficient to indicate the type. 



III. The stars which are not referable to the three types established 

 elsewhere are very rare. I have examined, without success, se- 

 veral hundreds of small stars below the 7th magnitude. I have met 

 with one very extraordinary one ; it is comprised in Lalande's cata- 

 logue (a=4 h 54 m 10 s , 3=-f-0°59'). Its spectrum is very curious : 

 the red is divided into two bands by one large dark line, the golden 

 yellow is reduced to a very clear and very bright line ; after a large 

 dark band follows a large dark-greenish-yellow band, and then, after 

 another dark space, a third zone. I imagine that this spectrum is 

 only an exaggeration of the third type ; I have at present no exact 

 measurements, the instrument being only arranged at present for 

 preliminary observations. 



Although I have not yet examined the entire heavens, I think it 

 pretty probable that but few of these stars will be found, and that 

 they will be of the family of the red and of the variable stars. 



Sirius, which is very high just now at a convenient time, has 

 been examined by the new spectroscope with a cylindrical eyepiece ; 

 the beautiful dark line in the extreme red is seen sharp and precise, 

 like the line F, and like those of the violet. This just confirms what 

 I saw at the outset, when I only used the prism with the telescope 

 without any eyepiece. Between this and the line D of sodium, 

 which is easily seen in the spectrum of Sirius, a band tolerably 

 spread out is seen nebulous and badly denned, and several other fine 

 lines in the green, already noticed by Mr. Huggins. 



I hope soon to be able to give exact measurements for these lines ; 

 but a general review of the heavens must first be made, so as to ascer- 

 tain the most remarkable stars. — Comptes Rendus, January 20, 1868. 



ON OXYCHLORIDE OF ZINC AS A CEMENT. BY DR. TOLLENS. 



Soret has, as is well known, used the solid mass resulting from the 

 mixture of chloride and oxide of zinc, more, however, in making 

 small objects than as a cement. It has also been used for stop- 

 ping teeth. 



This cement is admirably adapted for the laboratory ; by its means 

 a vessel may be closed perfectly air-tight in a very durable manner : 

 thus a chlorine wash-bottle was for a quarter of a year in use with- 



