( 2412 ) 
onl y obftru&ed my fight of the end of this mmfual Ap. 
pearance, but aifo hindered me from an exquifite OI> 
fervation of all the Particulars that mighc probably 
occur. 
The whole At mofphere feemed hazy, and full of Va- 
pours, efpecially towards the Sun-fet, The Moon and 
Stars Were that Evening beard- d at dm time, and fucceed- 
ed with an Halo about the Moon afterwards. Which 
dtfpofition of the Air was probably rhecaufe of the Pns- 
nomenon. But the Pyramid was undoubtedly imprinted 
upon the far diftant Vapours of the Atmofphere^ it being 
maniteftly f rther off, or lying beyond fome ftnall thin 
Clouds (c. 1. c. /.) that intercepted it, and in thofe parts 
covered and hid it. 
Alcho’ I have the greateft part of my Life been ready 
enough to take notice of fuch Appearances, yet I do not 
remember I ever faw any thing like it, except the white 
Pyramidal Glade, which is now entituled by the Name 
of the Aurora. Borealis. And it being (except in Colour 
and Length) fo like that, I have thought it worth your 
cognizance, and, if you think fit, of our moft illuftrious 
and famous Society alfo - y becaufe it may perchance in 
fome meafure conduce to the Solution of that odd Phe- 
nomenon, the Aurora Borealis. 
I was juft going to give you fome of my Obfervarions 
about the Migration of Birds this Year, which makes me 
hope, that that Subject is within the reach of the Royal 
Society to d: (cover. But being prevented, I have not time 
juft now, but fhall referve it for a more convenient Op- 
portunity, when I have more leifure. 
I have tearched every Night fince for this Pyramis 
Vefpertina, but have not feen any fuch Appearance, al- 
though the next Evening was hazy and likely. I alfo 
looked out to fee whether the Aurora Borealis would fuc- 
ceed in the roots thereof, but difeovered no fuch thing. 
IV. An. 
