of Camb ridge' : /V/New England . 50 7 
tude by obfervation. By mayer’s tables her latitude ' \Hs then 
49 7 39 /7 ?47 by which it appears/ that the error of there tables 
in latitude, at the middle of the eclipfe, by the Penobfcot cb- 
fervation, was — 1 The error in ' longitude,' Talcing the 
mean between that of the beginning aild end, 1 had -to be 
— </'. The determination of thefe errors upon the fiippofi- 
tion that Beverly is 4 h. 42' ^ W, ^of -Gr^n% 4 eh/ whadh, I 
believe, very near the truth. Beverly- appeari by^- 
to be i'- 18-" in time E. of Cambridge, #hieh TubfraSdd Trom 
4J1. 44' 17/' leaves 4 in 42?' 59&J-10G tno.taoxo ns ciltv/ bsd I01 
I hope, Sir, no umbrage will be taken at my writing i&yoit, 
on account of the political light in which America Is now 
viewed by Great Britain. I think political' dhputes : ••"flidnld ^bf 
prevent communications in matters of mere fcience '; nor Can I 
fee how any one can be injured by fuch an intercburfe* r 
x 8 
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. . _ , I - am » .ff&l e'aqi srfT - .dmiliawol 
Beverly m Maflachufetts, 
February 16 , 1781 , IfiJno; 
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