( 4*8 ) 
Light which is caft againft a Ceiling by the Beams of 
the Sun, reflected from the Surface of Water in a Bafon 
that’s a little fhaken ; whofe reciprocal vibrating Motion 
it very much imitated. But all agree that this Spettrum 
laded only a few Minutes, and fhow’d it felf varioufly 
tinged with Colours, Yellow, Red and a dusky Green: 
Nor did it keep in the fame Place ; for when firft it began 
to appear, it was feen a little to the Northwards of the 
Zenith, but by degrees declining towards the South, the 
long Stria of Light, which arofe from all Parts of the 
Northern Semicircle of the Horizon, feemed to meet to- 
gether, not much above the Head of Cajtor or the 
Northern Twin, and there foon difappeared. 
After the firft Impetus of this alcending Vapour was 
over, the Corona we have been defcribing appeared no 
more; but (till, without any order as to Time, or Place, 
or Size, luminous Radii like the former continued toarife 
perpendicularly, now oftner and again feldomer, now 
here, now there, now longer, now fhorter, Nor did they 
proceed at firft out of a Cloud, but oftner would 
emerge at once out of the pure Sky, which was at that 
time more than ordinary ferene and (till. Nor were they 
all of the fame Form. Moft of them feemed to end 
in a Point upwards, like ered Cones ; others like trun- 
cate Cones or Cylinders, fo much refembled the long 
Tails of Comets, that at firft fight they might well be ta- 
ken for fuch. Again, fame of thefe Rays would continue 
vifible for feveral Minutes ; when others, and thofe the 
much greater parr, juft fhew’d themfelves and died away. 
Some feem’d to have little Motion, and to ftand as it 
were fix’d among the Stars, whilft other with a very per- 
ceptible Tranflation moved from Eaft to Weft uncter the 
Pole, contrary to the Motion of the Heavens; by which 
means they would fometimes feem to run together, and 
at 
