The Earth, which has only one M 00 ^revolving about it, in 27 Days, 7 Hours, ¥

Minu teS)

yoo, or as 13,2 to t. And the seal Bulk of the E ais to that of the Moon as 109 X 109 X 109 to 36 * ^

X 30, viz. as 1295029 to 27000, that is, as x 29 ^

2/, or as 48 to 1 very nearly. u t

6. Sir Isaac Newton mentions the Atmosphere a^,

the Moon, but other Astronomers think there is R- ea(not to fay a Demonstration) for the contrary : For"^,there an Atmosphere of Air like ours, it must neC ,%t0rily obscure the Fixed Stars in the Moon’s App u ' ^;them ; but it has been observed that this never hapP eorl the contrary they preserve all their Splendor t0Moment of their Occultation, and then difapp ear e (stantaneoufly, and in the fame manner they re Oj e ,their Light when they appear again on the otherAnd this I am very certain of from the late remarksOccultation of Jupiter , which I observed with a ? Jreflecting Telescope from the Beginning to the ^with all the Attention possible, because I was vetssirous to be satisfied about that Matter; and a *Phænomena conspired to convince me, there vva sthing like an Atmosphere about the Moon. . 0 s

7. That the Surface of the Moon is not

even, but diversified with Hills and Vales, Conti 11 j,<?and Seas, Lakes, &c. any One Would imagir> eviews her Face through a large Telescope. Th a *jihas Variety of Hills and Mountains is demonstrable' ^the Line which bounds the light and dark Parts fl° 5ing an even regular Curve, as it would be upse ^smooth spherical Surface, but an irregular broken ■full of Dens and Notches, as represented in the i 'se 0 tsAlso because many small (and some large) bright P j[appear in the dark Portion, standing put at several t ;Distances from the boundary Line ; which Sp^f jfew Hours become larger, and at last unite wit jenlightened Portion of the Disk. ^ 1

L. On the other hand we observe many small P. c )j jinterspersed all over the bright Part,, some of j