[ 3!7 3 
be of great ufe to us, if you are informed of it, and 
would do me the pleafure of giving me an account, 
of it. 
Mr. Hodgfon has lent hither, to the two German 
Fathers, his theory and tables of the iatellites ot 
Jupiter. There are a great number of obfervations 
made at Peking ; many of which are not certain, nor 
proper for the forming of tables. The catalogue of 
the longitudes and latitudes of places is very errone- 
ous. He will undoubtedly corredt them. However* 
the work itfelf is a very good and ufeful one. Your- 
felf and the other aftronomers are able to judge of it 
much better than I can here. 
The Memoires de Trevoux fpeak in a manner* 
which, they fay, they had learned from you, con- 
cerning the rotation of the axis of the earth, and the 
confequences, which Dr. Bradley draws from it. It 
is a dilcovery worthy a man of his profound fagacity;. 
but will render it necelTary to make avail number of 
new calculations. 
XLVIIL 
