part. 
iGlfEs FATUI : OR MOCK FIRES. 
431 
not far from the zenith This phenomenon 
hour. 
spectacle of this kind which appears to 
Great Britain, was observed at Leeds, in 
Se 12th of April, 1783 , between the hours 
>ad arch of a bright pale 
ing an apparent breadth of about fifteen 
vj. 
aS ‘f" night. 
it'65. ^ havinsr an an 
K heavens, and passed considerably 
® zenith. Such was its varied density, that it 
itA Consist of small columns of light, having a 
After about ten minutes innumerable 
at right angles from its northern 
Vt '^cacl^^j'"^ themselves more and more till they had 
northern horizon. As they descended, 
L were tipped with an elegant crimson, such 
Vit ^ electric spark in an exhausted tube. 
Hi ) and 1*''® beautiful northern light ceased to 
^'tte" ,^“‘'®ing a range of bright yellow clouds, 
w^atesi; horizontally about the fourth of a circle, 
V’ as which darted from this arch towards the 
,tii('''ase| -- -— — 
\j'bi5t ,.Jcn days old, and shone brightly during this 
\ ■ ^he*'* splendour of these corusca- 
I 'vind was in the north, a little inclined to the 
n as the cloud-like and more stationary aurora, 
no Frx ' I ^ 
lar. 
ig P 'cnomenon was observed at Leeds on the 26th 
'fist From a mass, or broad column of light 
S ’l"'ee luminous arches, each of which 
^'® horizon. They had not 
''t(l a minutes when they w'ere rendered in- 
blaze of aurora borealis, which pos- 
l ® Just before occupied by these arches. 
FATUr, OR MOCK-FIRES. 
^»tl denominated by the vulgar Will-ivith-a- 
'ivrs' 
;n‘ 
-a-lanthoTt ; and, at sea, or on the 
■In ^Piiur^ exhalations from the earth, produced by 
lights. 
St. Helmo’s fires, are now 
I; 
'"■'Si" 
® matter of light or heat, or botli, 
w^etaM*^ Some other attenuated substance, emanating 
111 ^ com- 
Instead 
''*Ut j^*®’”^tinimal, or mineral materials, and com- 
