VOL. XLVI.] l-HILOSOPHICAL TRANSACTIONS. 3 



The comet was seen several times after, till the 18th of June; chiefly among 

 several unknown small stars ; but in its progress it passed just by the star y in 

 Cepheus. 



Dec. 6, 1747, vvas an occultation of the planet Mars by the moon; viz. at 

 5*" 34™ 34* true time, Mars entered under the moon's obscure limb, and wholly 

 disappeared. At 6*^ 46™ 2' the planet emerged from under the moon. 



March 15, 1748, at 6** 28", Mars and Venus were observed, in exact con- 

 junction, almost touching, being nearly equal both in longitude and latitude. 



Jan. f, 1748, was observed a conjunction of Jupiter and Venus. At S'' 15™ 

 4P their distance was 1° 3' 49", Venus being 50' 35" more south, and 2™ 52' of 

 time more west than Jupiter. 



An Observation of the Comet oflTAS, and some other Astronomical Observations 

 made at Pekin. By Father Antony Gaubil. From the Latin. N° 494, p. 31 6. 



These observations nearly agree with those of F. Hallerstein preceding. From 

 June 2 to 7 J the right ascension of the comet increased 6° and some minutes, and 

 the declination decreased 55'. 



In the conjunction of Mars and Venus 1748, March 15*^ S*" 10"", he observed 

 the distance of the western limbs of the planets to be J ' 29". 

 Some eclipses of Jupiter's satellites were observed as below ; viz. 

 True Time. 



Oct. 13<* g^ 40™ 30* Emersion of the 3d satellite. 



Ditto of the 1st. 

 Total immersion of the 3d. 

 Emersion of the 2d, doubtful. 

 First emersion of the 2d, 

 Nov. 7 8 52 59 First emersion of the 1st. 



Of an Aurora Aiistralis, seen Jan. 23, 1749-50, at Chelsea. By John Marty n, 



F.R.S. N°494, p. 319. 

 Jan. 23, 1749-50, about half after 5 in the evening, looking to the s.s.w., 

 Mr. M. thought he saw a reddish light about the planet Venus, which then 

 shone exceedingly bright. Being suspicious of some fire in the neighbourhood, 

 he went immediately to a window on the stair-case, where he saw a reddish light, 

 which shone with such exceeding brightness, that the lustre of the fine constella- 

 tion of Orion was almost effaced. He then went to a window facing the n.n.e. 

 where he presently saw a very broad band of crimson light, like that which he 

 observed from the same window, March 18, 1738-9; an account of which is 

 printed in the Phil. Trans. N°46l. But in the former the red band was bounded 

 on the north by streams of a greenish blue ; whereas the band now observed 



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