[ 31.3 
II. Ajlronomical Obfervations by the Mijjio - 
naries at Pekin. Tranfmitted to the Su- 
pra-cargoes 0; -Canton, by the Rev. Father 
Louis Cipolla, of the Tribunal of Mathe~ 
mattes , and communicated to the Royal 
Society by the Court of Dirc&ors of the 
Eaft-India Company *. 
PREFACE, BY THE ASTRONOMER ROYAL, 
flcdde, Nov. 4, 
‘ 773 - 
OS T of the following Obferva- 
M tions appear to have been made 
with a telefcope of eight feet, to which a micrometer, 
for meafuring differences of right afeenfion and de- 
clination was occafionally adapted. There was 
befides another telefcope of eight feet, confiding of 
two objedt-glaffes, in the manner of rqemer, 
which might be brought nearer together or fepa- 
rated, in order that the moon’s diameter might 
completely fill a fine reticule, in the focus, divided 
into twelve equal parts, for meafuring the digits 
eclipfed in lunar eclipfes. It is mentioned in the 
account of the lunar eclipfe of Nov. 12, 1761, that 
* The Society was favoured with another copy of thefe Ob- 
servations by John Blake, Efq. of Parliament-ftreet, to whom 
they Were tranfmitted by his fon John Bradby Blake, Efq. 
Supra-cargo at Canton. 
Vol, LXIV. E 4 - the 
