[ 5§S ] 
which can be defined by the vertical Circles reaching 
to the Degrees mentioned. 
In fetting down my Obfervations, I made ufe of 
apparent Time {p. m.) Afternoon. 
At 5L -f, there appeared near the Horizon a 
blackifh Zone, with its upper Limb of a Sky-colour, 
fomewhat obfcure. Above this Zone was another 
very luminous, refembling the Dawn pretty far 
advanced. The higheft Zone was of a red firy 
Colour. The Altitudes of the Zones feemed to bear 
fuch Proportion, that the Second was double the 
Firft, and the Third triple r And, at the fame time, 
they in many Places rofe fomewhat above the 40th 
Degree of Altitude. Eaftward they extended to the 
55 th Degree on the Horizon, and Weft ward to the 
70th. They had Three perpendicular {lender Di- 
vifions, like Slits 3 but they were parallel to the 
Horizon, excepting that the Third had fame Parts of 
its upper Limb unequal in Height, with fome Afpe- 
rities upon it 5 and from the Firft to the Sixth De- 
gree Weftward, a fort of Beam wider than the reft 
was obferved. The Stars of Part of the Great Bear , 
the Dragon , Hercules , and others, appeared more or 
jefs through the Bheenomenon (and others after- 
wards, according as the Appearances varied). But 
through the lower Zone they appeared more obfeure- 
]y, and in fome Places not at all : Through the 
middle Zone, they fhone bright 3 but through the 
higheft, they were lefs diftind. 
I cannot determine with Certainty the firft Mo- 
ment of the Appearance of this Aurora: Nor indeed 
docs it feem fcafable, to define the Rife of fuch 
Bhrenomena with fufficient Accuracy. But it is 
worthy 
