1^1 MtfceUanea Cur to fa. 



of Gajfendus and Faber : But our forernentioned 

 Abbe fuperadds to a greater or letTer Aper- 

 ture of the Pupil, as a necejTary Contequent, 

 a greater and letter Convexity of the Cry flat- 

 line, as alfo a lengthening and fhortening the 

 Tube of the Eye. And this I mutt: confefs 

 would do fomething if we find it true in our 

 Cafe \ and this let us try. Firft, fays he, 

 the duskifhnefs of the Moon nigh the Hori- 

 zon admits the Pupil to enlarge it felf, the 

 Cryftalline to flatten, and the Eye to lengthen. 

 But what if we change our Objed, and in- 

 ftead of the Moon take the diftance between 

 fbme of the fixt Stars ; as fuppofe thofe of 

 Orions Girdle) we fhall find the fame Pheno- 

 menon in them, and yet I hope neither he nor 

 Gajfendus will afTert, that they at one time 

 ftrain the Eye more than at another, or that 

 at any time their fulgur ftrains the Eye at 

 all ; if he do, let him take Stars of the letter 

 Magnitudes , nay even thofe that can but 

 juft be perceived, and then he will be Con- 

 vinced : Or let him con fid er whether this will 

 hold in looking at the Sun through very dark 

 Glaffes, which render the Sight thereof as 

 inoffenfive to the Eye* as that of a green 

 "Field. But perhaps he will then fay that this 

 other Reafon holds, which is 2dly, That the 

 greater imaginary diftance at which we think 

 the Moon near the Horizon, than when more 

 elevated, makes us Contemplate her as if 

 really fhe was fo, viz.. with ample Pupils, &c \ 

 but this I have fufficiently overthrown in my 

 Remarks againfi: Des Cartes; therefore I pars 

 it over, only fubjoining that if there were 

 anything in this Surmife, my thinks the Ho- 

 rizontal 



