'( 2.5 ) 
amptonjbire South *, all at the * fame Time, which de- 
ferves particular Rehedion. But then, if any Reader ex- 
peds here the Solution of all thefe Phenomena, he is 
to know, that as to thefe Northern Lights, Dr. Halley 
has communicated his Thoughts to the Publick in the 
Philosophical Tranfaffions foon after the firft Appear- 
rance and I communicated mine about the fame Time 
in a fmall Pamphlet. And as to the Halos , Mock-Suns , 
Inverted Arcs of Rainbows , and other Phenomena of 
the like Nature, Monf. Huygens has mod accurately 
explained them in his Pofthimous Works, from p . 293 
to p . 566. and Sir Ifaac Newton himfelf has touched 
upon them in his Opticks, 1 (lEdit.p. 134. to which 
the Inquifitive Reader may have Recourfe for his Sa- 
tisfadion. Only if any enquire farther, Why the Nor- 
thern Lights have of late been fo unufually frequent, 
I mud declare, I am far from having fatished myfeif, 
and fo (hall not pretend to offer any Tiling for the Rea- 
der’s Satisfadion. 
London , Nov. 6 . 1721, 
Will Whifton, 
/ 
IV. Ob- 
