t a8o 1 
XXy. ExtraBl of a Let ter from Mr. Lexel to Dr. Morton* 
Dated VQiQ\:^b\xvg, June 14, 1774. 
Redde, Mar. i6, X g j propofe to make fome refearches 
concerning the difference of the me- 
ridians of the principal Obfervatories of Europe, which I 
am perfuaded can heft be afcertained by the occultations 
of the fixed fiars by the Moon ; it would be of great fer- 
vice to me to be furnifhed with the obfervations that 
have been made, or that will be made, this year, of the 
occultations of cc or of y Tauri by the Moon. I beg, 
therefore, sir, you will pleafe to defire Mr. maskelyne 
to communicate them to me, towards the beginning of 
the next year, directed to Mr. euler, fecretary of our 
Academy. It would alfo be of great ufe to me to have 
the obfervation of the occultation of the Pleiades by the 
Moon the 1 5th of March, 1 7 66, in cafe it has been taken 
at Greenwich. 
Here are fome obfervations of Mr. Wargentin, of the 
occultations of (/. and y Tauri. 
X773> 
