JMifcellanea Curiofa. 275 



T^he Sentiments of the Reverend 

 and Learned fir. John Wallis 

 R. S. Soc. upon the aforefaid 

 ylfpearance, communicated in a 

 Letter to the Tublijher. 



AS to the laft Inquiry ( concerning which, 

 you fay, the Royal Society would be 

 glad to know my Opinion •,) about the appa- 

 rent Magnitude of the Sun near the Horizon^ 

 greater than when confiderably high : 



The Inquiry is Ancient : And, I remember, 

 I difcourfed it near forty Years ago with 

 Mr. Fofter, then Profeifor of Aftronomy in 

 Grejham College. Who did then alTure me 

 (from his own Obfervation, I fuppofe, for 

 I have never examined it my felf,) that the 

 apparent Magnitude taken by Inftrument 

 (however the Fancy may apprehend it) is not 

 greater at the Horizon, than when higher. 

 And Mr. Cafwel (when your Letter was com- 

 municated to our company here) affirmed the 

 fame. 



And (though I have not my felf made the 

 Obfervation) I do not doubt but the thing is 

 fo. For it is agreed, That Refraclion near 

 the Horizon, though (as to appearance) it 

 alter the Altitude of the thing feen *, yet it 

 alters not the Azimuth at alb 



T 2 And 



