PHILOSOPHICAL TRANSACTIONS. 



521 



VOL. LII.J 



you would, in your answer to Abbe de la Caille, acquaint him that I had proposed 

 to the R.s. the observations of the moon's parallax before his letter came; and 

 that Dr. Bradley was to make observations at Greenwich correspondent to mine 

 at St. Helena ; and that I was drawing up a list of the proper observations to be 

 made, and the proper stars with which the moon was to be compared, which I 

 proposed to transmit to the Abbe de la Caille, in order that he might attend to 

 the same observations if he thought proper. But as he has made out a list of 

 proper opportunities of observing, I shall only set down 5 observations to be 

 added to it, which I beg you will transmit to the Abbe de la Caille ; and like- 

 wise deliver a copy of the same to Dr. Bradley. 



1 also desired in my letter that you would request the Abbe de la Caille, and 

 the other French astronomers by him, to attend to the observations of the eclipses 

 of Jupiter's satellites; especially the first, from May ]76l to June 1762 inclu- 

 sive, in order to settle the difference of longitude between Paris and St. Helena ; 

 which if it came in the name of the Society it would be better ; and that you 

 would also deliver it as my request to the Society, that they would recommend 

 it to my Lord Macclesfield, Dr. Bradley, Mr. Raper and Mr. Short, and any 

 other gentlemen they know propose to attend carefully to the observation of the 

 transit of Venus, to make as many observations 1753. Sydera c^J|JJ^|J^ -^^^^ j^ 



of the eclipses of the satellites as they conve- " 



niently can, in order to settle the diflTerence of Jun. 2. d .. .. is^s?"" 8° 45' 

 longitude between their place of observation j^n%. \ .T ! ! 14 30 u 36 

 and St. Helena in the most exact manner; Vesp. » £t.. 14 37 i5 i 

 which is of the utmost importance with respect ve"*p.** ^ in !* 15 51 19 ^6" 

 to the use to be made of the observations of Jun. 30. |3 .. .. 14 16 12 59 

 the transit of Venus. J^^; ;-;; [*% J^ [J 



Vesp. 1 /3 TJl. .. 15 51 19 6 



FIT. On a Samnite Denarius, never before published. By the Rev. John Swin- 

 ton, B.D., of Christ' Church, Oocon., F.R.S. p. 28. 

 This is a silver coin of the size of the larger denarii, and with two Etruscan in- 

 scriptions. On one side is a galeated head, with an inscription in Etruscan letters 

 answering to the Roman FITEEIV. On the reverse are 3 human figures 

 with an Etruscan inscription answering to the Roman C. PAAPII. C. 



VIII. Account of an Eruption of Mount Vesuvius. By Sir Francis Haskins 

 Eyles Stiles, Bart., F. R. S. Dated Naples, 23d Dec. 1760. p. 39. 



The mountain, which was quiet this morning, with scarcely any visible smoke, 

 threw up on a sudden about noon a vast column of black smoke, which rose to 

 a very considerable height; and before it had diffused itself made a splendid and 

 glorious appearance, as the sun, which was then shining, gilded the superior 



VOL. XI. 3 X 



