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LXVI. A Letter from Monfieur de L’lfle, of 
the Royal Academy of Sciences at Paris, 
to the Reverend James Bradley, D. D. 
AftrGnomer Royal , and Savilian Projejjor 
of Afronomy at Oxford. 
Tr (inflated, jrom the French. 
S I R, Paris, Nov. 30, 1752. 
Read Feb. 2I »T' Have received the letter, which you 
I did me the honour of writing to me 
on the 2 2d of Auguft this year, O. S. together with 
the obfervations made by you at Greenwich, which 
correfpond with thofe of Monfieur de la Caille made 
at the cape of Good Hope, with relation to the paral- 
lax of the Moon, Venus, and Mars, i now fend 
you, according to your defire, the companion, which 
I have made between your obfervations and thcfe of 
Monfieur de la Caille. I have, at prefent, only com- 
pared thofe of Mars; and tho’ a considerable number 
of them have been made by you both, yet I find but 
fix, which really correfpond, that is, which have been 
made on the fame ftar, and in the fame night ; there 
being between them only the interval of time necef- 
fary for pafling from the meridian of the cape to that 
of Greenwich. From many obfervations of Mon- 
fieur de la Caille, compared with thofe made in Eu- 
rope, we are affured, that the cape of Good Hope is 
eaft of Greenwich P 1 14.' ; and this is the difference 
of longitude, which I have fuppofed, in order to re- 
duce your obfervations to thofe of the cape. 
As 
