X ' - ■ - ■ ; . ' ' , f 
( 120 ) 
who fhalT feethefe Olaffes,how they couldbe truly wrought 
to fuch a Figure, with fuch a Cavity* & yet more, when they 
fhall hear the Author undertake to excavate other fuch Eye- 
Glafits to above two inches , and Obje&- glajfes of five inches 
Diameter* He hath likewife already begun his objctt-gUffes 
forth© mentioned two Ocular ones, of rhe fame Figureof 
about two inches Diameter , which are to be left alt open., yet 
without caufing any colours. Of all which ’tis hoped , that 
fhortly a fuller and more particular accompt will be given. 
Monficur Auzout’s Speculations of the Change sjihgly 
to he dif covered in the Earth and Moon , by their 
refpeStive Inhabitants * 
This Inquifiuve vhilo[opher\x\ a letter of his,lately written 
to his correfpondent in London , takes occafion to dilcourfe 
of his confidetations concerning thofe Changes, mentioned 
in the Title, as followes * 
I have ( fai( h he ) fbmetitnes thought upon the Change 
which *tis likely , the fuppofed Inhabitants of the Moon 
might difeover in our Earth , to fee , whither reciprocally I 
could obferve any fuch in the Moon , For example, me* 
thinks X that the Earth would to the people of the Moon ap- 
pear to have a different face in the feveral feafonsof the 
year* and to have another appearance in ■ Winter ^ when 
there is almoft nothing green in a very great part of the 
j Earth * when there are Countries all covered with fnow , 
others 3 all covered with water , others, all ob feu red with 
Clouds s and that for many weeks together ; Another in 
Springs when the Forrefts and Fields are green. Amt her m 
Su mmer , when whole Fields are yellow &c. Me thinks, 
! fay, that thefe changes are confiderable enough in the force 
of the reflexions of Light to be observed , fince we fee fo 
many differences of Lights in the Moon . We have Rivers 
confiderable enough to be feen , and they enter far enough 
' into 
