JMifcellanea Curiofa. 16% 



Concerning the apparent Magnitude 

 of the Sun and Moon y or the ap* 

 rent diflance of two Stars when 

 nigh the Horizon 5 and when 

 higher elevated. 



I Do not defign fo much to eftablifh any 

 thing of my own that may be fatisfa&ory 

 in folving this admirable appearance, as to 

 detect, the Errors of thofe that have offered 

 at a Solution thereof, and have come fhort 

 (as I conceive) of being fatisfa&ory \ that 

 thereby I may again let the minds of Philo- 

 sophers on work, and roufe them up to en- 

 quire anew after this furprizing Thmomenon. 

 That I may do this the more effectually, I 

 fhall briefly declare the Matter of Fad, and 

 then proceed to the Reafon thereof, given by 

 feveral, and to their Confutations. 



Firffc therefore it is well known that the 

 mean apparent Magnitude of the Moon is 

 30 m. 30 f. we will take it Numero Rotundo 

 to de 30, that is, an Arch of a great Circle 

 in the Heavens of 30 Minuts is covered by 

 her Diameter ; and this we'H fuppofe to be 

 her apparent Diameter, at a full Moon in the 

 midflof Winter, and when me's in the Me- 

 ridian, and at her greateft Northern Lati- 

 tude, and confequently the utmofl that fhe 

 can be elevated in our Horizon ; J Tis as well 



S 4 knowa 



