[ ] 
ning the Eye, and making the Cr^/^iZ/W more convex 
the firft attends our looking at Objefts which are Remote 
or which we think fo'; the latter accompanies the veiw- 
ing Objefts nigh at hand. Like wife an open Pupil and 
flat Cryftallme attends Obje£ts of a more Sedate Light, 
whilft Objefits of more forcible Rays require a greater 
Convexity, and narrow PupiL From thele Pofitions the 
Ahbe endeavoured to give an account of ouvPh^mmem^^^s 
follows. When the Moon is nigh the Horizorij by com- 
parifbn with interpofed Obje£ts, we are apt to Imagine 
her much farther from us then when more Elevated, and 
therefore ( fays he ) we order our Eyes as for veiwing an 
ObjeQ: farther from us, that is, we Ibmthing enlarge the 
Pupil, and thereby make the Cry ft Mine more flatt : more- 
over the Duskiflinefs of the Moon in that pofture does 
not fb much ftrain the fight; and coniequently the Pupil 
will be more large, and the Cryftallim more flat: hence a 
larger Image fhall be proje£ted on the Fund of the Eye, 
and therefore the Moon fliall appear larger. And this 
difpofition of the Eye that Magnifies her, Magnifies alio 
the divifions of our forementioned Lattice, and confe- 
quently fhee by her Body fhall poflels no more of the di- 
vifions,then when fhee feems lefs. Thefe two forementio- 
ned accidents, viz. the Moons Imaginary difl:ance and 
Duskiflinefs, gradually vanifhing as fliee rifes, a different. 
Species is hereby introduced in the Eye, and confequently 
fhee feems gradually lefs and lefs, till again fhee approach- 
es nigh the Horizon, Thefe two Opinions oi^GaJfendus 
and the J^h being fb nigh a kin, I fhall confider them 
both together, and firft I affert that a wider or narrower . 
Aperture increafes not, neither diminifliss the projefti- 
on on the Retina. I know Honor atus Faber in his Synopfis 
Optica endeavours to prove the clear contrary to this my 
AfTertion, and that after this manner. Fig. U ^ B is 
an Objeft, £ F the greater aperture of the Pupiljadmit- 
ing the projection ^C -'^ on the Retina, whereas the leffer 
aperture 
