( *45 ) 
I. Obfervatims on the Lumen Boreale, or 
Streaming on Oft. \^i6y by the Reverend 
Mr* W. Derham, F, F, S» 
Lthough the Lumen Borf^ale, or Strenmt**g hath 
been a common Phsenomenon, evtr t.nce rhe- 
furprifing one. Mar. 6, 17 > 5-, i6, and as fuch, would 
not delerve to be taken notice of,- yet in this ol Ocl 8, 
there were not only fuch furprifing, but dirferent Cir- 
cumflanceSjthat, I hope, the Royal Society will receive 
Accounts of them from many Hands,- which may 
enable the skilful Meteorologies to find out their 
For the clearer preceding in my Relation , I fliall 
obferve, that there are two forts of Streamings, ^\\\ch 
I have taken notice of-, one, by w^ay or Explofion 
from the Horizon ,- the other, by opening and 
ing, without fuch Shootings up, and fwilt Oarrings, 
as thofe were which appeared in the Lumen Boreale 
beibre fpoken of. 
Of the latter fort chiefly, was this lad of 8 : 
in which, altho’ the Streams^ or Spires^ or Lances, or 
Qones for, what fhall 1 call them ?) were as large and 
remarkable as in the former; yet they exhibited them- 
felves principally by the vaporous Matter opening 
and ihutting, as it a Curtain had been drawn and 
withdrawn before them. 
The firfl View I had of this Phsenomenon, was 
precifely at Eight o’clock in the Evening : .At which 
time, all I faw, was a long narrow' Fajcia., like a 
white ragged Cloud, extended crofs the deavtns, trom 
Caufe. 
K k 
W.bS. 
