[ 59<S ] 
Weftern Limit, which was interrupted by Clouds, 
was wider and more irregular than the Eaftern Limit. 
Tab. Fig. i. exhibits xhzThainomenon conformable 
to the Defcription now given. 
8k. 9 / . To the Weft, the Limit of the Arch re- 
mained confuted, though of a red Colour, fomewhat 
vivid: But to the Eaft it became more faint, and 
changed rather into a whitifh Colour. 
8*>. 19'. The red Light fpread to the Conftellation 
of the dolphin. 
8h. 22'. The Arch, which was ftill diftinft, grew 
bigger, palling Eaft ward by the Two Stars, jc and z, 
of Ur fa major , and Weft ward by the Stars of the 
Swans Tail. 
8 h . 29'. Lucida Lyra remained clear of the red 
Light, which moved higher, and was immerfed in 
the bright Light. 
8^. 30'. At the Eaftern Limit of the Aurora , that 
is, at 54 Degrees from the North Pole, there was fud- 
denly feen to rife vertically up, a Beam of Fire, at 
firft of a very bright Light ; but, in Procefs of Time 
becoming more refplendent, it changed into a red 
Colour, like that of the Moon in the Horizon. 
8 h . 31'. The Light ftill increafed in Vigour, and 
was now intirely like the red Rays, which are fepa- 
rated by the Prifm. Its Figure was changed } for it 
rcfembled a Pyramid, with its Bafts on the Horizon, 
4 Degrees wide, and its Height was about 20 De- 
grees. Near the Top of the Pyramid, the Rednefs 
was lefts than at the Bafts, and its Limits were not 
very diftinft. 
8*>. 34'. The red Light continued ftpreading, and 
made, as it were, a Bafts of a weaker Rednefts, for 
the 
