MtfceUanea Curtofa. 



not oblig'd to accommodate his Scheme to 

 Nature for here he has made the Circle GF 

 representing the Earth very large in propor- 

 tion to the Circle AD; and then indeed 

 taking the point F in the Earth's furface, 

 and by lines from thence dividing the Angle 

 AFD into what ever equal parts the inter- 

 cepted Arches AB, BG, CD, fhall be un- 

 equal. But if he had confidered, that the 

 Earth is as it were a point in refped of the 

 Sphere of the fix'd Stars, nay the very annual 

 Orbit of the Earth is almofl if not altogether 

 imperceptible (faving the truth of Mr. Hookas 

 Attempt} he would have found that the Lines 

 F B, F C, FD, mull be all conceived as drawn 

 from the point G , and then equal Angles 

 will intercept equal Arches, and equal Arches 

 equal Angles : And fo it happens (at leaft 

 beyond the pofllbility of difcovery of fenfe) 

 to the Eye on the furface of the Earth. And 

 befides he mould have confidered , that all 

 Obfervations Aftronomical are performed as 

 from the Center of the Earth, and therefore 

 it is that they keep fuch a ftir about a Paral- 

 lax j fo that his drawing his lines fo far from 

 G as F is, and to another concentrick Circle 

 fo nigh as AD, deceived him in this 

 Point. 



The famous Gaffendm has written 4 large 

 Epiftles on this Subject, the fubftance of all 

 which is, that the Moon being nigh the Ho- 

 rizon and looked at through a more foggy 

 Air, calls a weaker Light, and confequently 

 forces not the Eye fo much as when brighter j 

 and therefore the Pupil doe; more inlarge it 

 fclf, thereby tranfmittmg a larger Projection 



on 



