of a new Variable Sta}\-^\ i^^ r 



■In order to obtain a point of comparifon, for fettling the 

 periodical changes of tj Antinoi, which I fuppofe to be con- 

 ftant, it is natural to fix upon that phafis, which can be deter- 

 mined with the greatefl precifion ; and this feems to be at the 

 time when it is between its leaft and greateft brightnefs, as 

 clmoji the whole increafe of brightnefs is completed in lefs than 

 24 hours, though the perfect completion is performed only in 

 n^d ±L hours ; thus having fettled this neceffary point, and found 

 roughly the length of a lingle period, the computations, in 

 order to obtain greater exadlnefs, areas follows. 



S s Ti 



ime 



