( 454 ) 
(viz. Od. 8 . 0 .< 5 \) the Defeription of which is pdb' 
liih’d in the Tranfattion N\ 395, it will not be amifs 
to give a iliort Extra# of them, that the Extent of 
the ‘Phenomenon may be more fully known, and its 
Height thereby better edimated. 
Monk Gaudin, in a Letter from the Obfervatory at 
\ Paris , dated October 20. N.'S. 1726. writes, that he 
law it firfh at half an Hour pad feven in the Evening, 
forming at that Time a luminous Arch (with another 
iomewhat darker under it) which extended it ielf al- 
moft from Sun-fet to Moon-rife^ and was raifed above 
the Horizon about twenty five Degrees ; from whence 
fhot out from Time to Time luminous Streams about 
ten Degrees above it. At half an Hour pad eight, the 
Number of thefe Streams vadly encreas’d , covering 
all the Heaven, excepting the Height of twenty De- 
grees oppofite to it : But towards the Zenith there 
remain’d a circular Space which was never cover’d by 
them, tho’ there wanted not a condant Succeflion. 
Thefe Appearances continu’d very drong till half an 
Hour after ten ; when they began to decline, and dis- 
appear’d totally about two in the Morning. 
Monf Maraldi, in a Letter dated at Thiers , OEt. 20, 
1726. N. S. two Leagues to the South of Taris , fays, 
it began there about half an Hour pad fix with a con- 
dant uniform Light in the North ; loon after which 
appear’d three or four luminous Arches one over ano- 
ther, from whence iffued a great Number of Rays, 
which Ihot up a confiderable Height above the HorT 
zon. At eight o’ Clock thefe Rays darted quite up to 
the Zenith ; half an Hour after which they very much 
encreas’d, fpreading with drong Undulations all over 
the 
