[ 47 ] 
VII. An Account of feme luminous Arches. In a Letter from 
Edward Pigott, Efe. to Sir Henry C, Englefield, Bart . 
F. R. S. 
HGUGPI perhaps an account of the phenomenon of 
February 23. has been communicated to the Royal So- 
ciety, I neverthelefs flatter myfelf the following may be of 
fome ufe, as the different appearances were obferved with 
accuracy. 
mt 
Being at Kenfington on the above-mentioned date, I faw 5 at 
nine o’clock at night, a very Angular, luminous arch in the 
fky, about 4 degrees in breadth, refembling much a bright 
white cloud, drawn out in great length, or fomething like the 
uncoloured northern lights, without flafhes, but feeminglymf 
a more fubftantial texture ; the ftars appeared very bright 
through it; it probably had already exifted fome time. At 
about 9 h. f I noted its track thus : it was vifible very near 
the horizon in the N.E , paffing, between Arfturus and tj Roods, 
almoft covered the clufter of Coma Berenices, and (2 Gemi- 
norum, then pafled to the fouth of Aidebaran, over the ftars 
g, or 7 T Orionis, where its light was fainter, and difappeared 
a few degrees lower. Though its fir ft appearance was that of 
a beautiful regular arch, I perceived, after a few minutes, its 
6 form 
Read November 12, 1789. 
BEAR SIR, 
April 25, 1789, 
