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proper Obfervations. And tho it was very plain tliat 
the Atmofphere of the Moon muft needs (hew itfelf, in 
the time of a total Eclipfe of the Sun; yet 1 do not 
know that any body did think of this, till, in the laft 
Month of May, many Perfons did actually fee it. Such 
as have read Monfieur Hugens’s Cofmo-Tkeoros may guefs 
how much this Difcovery would have been acceptable to 
that llluftrious Author. 
Some particular Obfervations, which are intended to 
be made publick, do evince that our Atmofphere is fome- 
times vifible, all along, from the Surface of the Earth 
to the perpendicular Height of one Semidiameter of the 
Terreftrial Globe. And the continued Appearance of a 
Crown, of only four or five Degrees Diameter, about 
the Sun, during the whole time of the total Obfcuratkjn, 
does Ihew that the dir he real Matter, in which that Crown 
was produced, muft be at a very great Height above the 
Surface of the Earth. But if that Crown was to be feen, 
fo far as the Weather did permit, in all the Places, 
where the Eclipfe was total, it muft be concluded, that 
the Caufe of it was not in our Air, but in fome Vapours 
incompaffing the Sun : And probably, in thofe very Va- 
pours, which produce that pointed Light, that has been 
ebferved lying in a manner along the Ecliptick, and that 
has the Sun for Center. Now either of thefe Conclufi- 
ens, viz. concerning the great Height of the parts of 
our Atmofphere, capable of producing that Crown, of 
elfe concerning a Meteor obferved, not in our Air, but 
in the Vapours that incompafs the Sun, is very Angular, 
and defends a great deal of attention. If ever fuch ano- 
ther Appearance fhould be feen, in the time of a total 
Eclipfe, it would be proper to. obferve accurately the leaft 
Diameter of the Crown, from infide to in fide : And to 
take notice whether, during die whole time of the total 
Immerfion, the inward Circle be every where continued, 
and of an uniform figure. The lefs the faid Diamece*-, 
13 U and 
