[ ] 
Ohfervations of the Longitude, Latitude, and 
the Declination of the Magnetic Needle, at 
Prince of Wales's Fort, Churchill- River. 
Having obferved the apparent Time> ^ 
of an Emerfion of Jupiter’s firft Sa- ( 
tellite at Fort -Chur chill, on Saturday f 
the 20th of March laft 1 741-2. at J 
I find the fame Emerfion happened ) 
at London , by Mr. Founds Tables, ( g 
compared with fome Emerfions actually f 
obferved in England near the fame, at ) 
Whence the hoary Difference of } 
Meridians, between Fort-Chur chill and ^ 6 19-20 
London , comes out 
Which converted into Degrees of 
the Equator, gives for the Diflance of 
the fame Meridians 
Wherefore, fince the Time at London was later in 
Denomination than that at Churchill \ it follows that, 
according to this Obfervation, Churchill is 94 De- 
grees yo M inutes, in Longitude Weft of London. 
I took fcveral other Obfervations, which agreed 
one with another to lefs than a Minute, but this I 
look upon as the moft diftindt and beft. 
The Obfervation was made with a good iy Foot 
refra&ing Telefcope, and a Two Foot Refkdtor of 
Gregory’s Kind, having a good Watch of Mr. Gra- 
ham’s that I could depend upon ; for I have frequent 
Opportunities of dilcovering how much its Vari- 
ation amounted to, and conftantly found its daily 
Dc- 
} 
94 50 
/ // 
55 50 
15 IO 
