[ 94 ] 
XVI. An Account of an A nth el ion obferved 
near Oxford. In a Letter to the Reverend 
Tho. Birch, D. D. Secretary to the Royal 
Society , from the Reverend John Swinton, 
B. D. of Chrift-Chtirch, Oxon. F. R. S. 
Good Sir, 
Rea ^J 6 e I b ‘ * 9 ’ T} Eturning home with the Revk Mr. 
i\. Jane, Student of Chrift-Church, 
from Cudfden, where we had been to make a vifit 
to the Bifhop of Oxford, on Thurfday, July 24th, 
jy 6 o ; we reached the top of Shotover-hill, about io' 
pad; 7 o’clock in the evening. At yh 1 2' I acciden- 
tally difcovered a luminous appearance, not much 
unlike the fun when feen through clouds, about four 
or five times as big as the folar dilk. [Vid. Lab. 
II.] The fun w r as then pretty refplendent, though 
a full exertion of its rays was fomewhat obdrudted 
by a thin waterifh cloud. Soon after a very diftin- 
guifhable Mock-Sun, oppofite to the true one, which 
I take to have been an Anthelion , appeared. This 
was not however completely formed, that part of its 
dilk remote!! from the fun being indiftindt and but 
ill defined. Nor could the figure of the lucid trad! 
round it, though approaching a circle, be with 
any precifion afcertained. This uncommon meteor was 
feated in the E. but the fun had a weflerly fituation. 
From 7I1 12 to y^ 1 S' the phenomenon fhone very 
conlpicuoufly, though almoft furrounded by dark 
thickifh clouds. The difk of the Spurious Sun feemed 
as large and bright as that of the true one, but was 
not 
