[ 3i ] 
IX. An Account of a?i Appulfe of the Moon 
to the Planet Jupiter, obferved at Chelfea, 
by Mr . Samuel Dunn. 
Read Feb. 17, rp H E alteration of the angles of po- 
j 7 6 3 - j| fition made by the cufps of the 
Moon, and a planet to which the Moon makes a near 
appulfe, will always enable the aftronomically inclin- 
ed to determine from obfervation, the longitudes of 
places, by the naked eye and a clock or watch fet to 
apparent or equal time. — Such an obfervation I made 
at Chelfea 25th Dec. 1762 at 1 i h - o' - 30" appa- 
rent time, the fatellites being as in the figure at the 
lame time. — Jupiter’s difiance from the Moon half 
a degree. Tab. II. 
Lat. 51 0 29' 5", Long. 41" Weft of Greenwich. 
X. A Cata- 
