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XXIV. Obfervations on the Eclipfe of the 
Sun, April r, 1764'- I n a Letter to the 
Right Honourable James Earl of Morton, 
Pref R. S. from the Rev. Nathanael Bills, 
M. A. Savilian Profejfor of Mathematics 
at Oxford, and Aftronomer Royal. 
My Lord, 
Read May 10, A S I had reafon to believe, from a 
1764 .. calculation made from the belt hi- 
nar tables, that the north-weft limit of the annular 
appearance, in the late great eclipfe of the Sun, would 
pafs but a few miles to the South-weft of the Royal 
Obfervatory at Greenwich, I thought myfelf indil- 
penfably obliged, to leave Oxford, where my em- 
ployment then called me ; and to attend to an obfei- 
vation which might pofiibly be of feme confidence. 
And I had at the fame time an opportunity of paying 
my duty to their Royal Highnefles Prince Wiluam 
Henry and Prince Henry Frederick, who had 
fionified their intention a few days be.ore, of honoui- 
jpg the Royal Obfervatory with their prefence on that 
OC On°the ift of April, foon after eight in the morn- 
ing, their Royal Highneffes arrived, and were pleafed 
to fignify to me, that it was their defire, notwith- 
ftanding their prefence, that the obfervations might 
be made with all poffible accuracy. Their Royal 
Highneffes were alfo pleafed to permit his excehen -j- 
