VOL. LII.] PHILOSOPHICAL TRANSACTIONS, u 64b 



At 1 4^ 22'" 30% the preceding end of the ring more plain and bright, the 

 subsequent end of the ring more dull, and the body at this time appeared a little 

 more distinct than before. 



At 14^ 22"" 34% the subsequent end of the ring appeared most dull, and the 

 preceding end clear; after which, in some short space of time, the whole ring 

 and body of Saturn appeared sharply and well defined. t 



Therefore, he concluded, that this diversity of appearance must have arisen 

 from the effects of an atmosphere of the moon. 



XCV. An Account of the Comet seen at Paris in June 1762. By Mans. De la 



Lande. p. 581. 



Longitude of the ascending node W 19° 23' 



Longitude of the perihelion 3 15 14 



Inclination , . . 34 45 ^ 



Passage through the perihelion May 28, at 15^ 27™, middle time. 



Perihelion distance J. 01 24, supposing the distance of the sun from the earth 

 to be 1. 



They were not able to observe this comet later than the 5th of July. It was 

 even at too great a distance on that day ; and was but ill observed from the 30th 

 of June, This comet resembles none of the 49 comets, whose elements are 

 already known. 



XCJ^L Minutes of the Observation of the Transit of Venus over the Sun, June 

 6, 1761, taken at Calcutta in Bengal, Latitude 22° 30", Longitude East from 

 London nearly 92°. By Mr. Wm. Magee, p. 582. 



The appulse uncertain, but very apparent at . , 8^ 1 1'" 35^ 



The centre of Venus on the sun's limb 8 16 35 



The interior contact at. the ingress 8 24 40 



Interior contact at the egress 2 15 55 



d Centre of Venus on the sun's limb at the egress 2 24 O 



Total egress 2 32 O 



The above observations were minuted from a stop watch of Mr. Ellicott's 

 having no pendulum clock or time piece. The weather being cloudy for several 

 days before that of observation, there was no opportunity of ascertaining the 

 error of the watch ; but on the day of observation he found, on comparing the 

 watch with a meridian line in the town hall, that when the centre of the sun's 

 image was on the meridian line, the time by the watch was 4"^ 10^ past 12. 

 Comparing the watch the 7th, 8th, and 9th June with the meridian line, he 

 found it had gained nearly 2 minutes each day, the time by the watch June 9 

 being 10™ 5", when the sun was on the meridian. It took about 5" to wind the 



