206 SOME ACCOUNT OP THE 



7. The equation of time. 



8. The inn's equation, or equation of the orbit. 

 Argument, his mean anomaly, corrected by the equa- 

 tion of time. It this is in the northern iigns, the equa- 

 tion is -to be fubtra&ed from his place corrected by 

 the equation of time ; if in the fouthern, to be added. 



9. The fun's Wtflance^ his horary motion, and appa- 

 rent diameter. Argument, his equated anomaly. 



II. Tables of the Moox, 



l — C). Contain the mean longitudes and motions of 

 the Moon, of her apogee and node, for the fame period, 

 as the correfponding tables of the fun. 



7. The moon's firft equation, or elliptic equation. 

 Argument, her mean anomaly corrected by the equa- 

 tion of time, to be applied to her place ; corrected by 

 the equation" of time, in the lame manner as the equa- 

 tion of the fun to his. 



8. The moon's fecond equation, is to be applied in 

 three pfciocs ; viz. to her longitude and apogee^ cor- 

 rected by the firft equation and to the node. It has 

 two arguments. 



l . From the moon's longitude once equated, fub- 

 tracl the fun's equated place. The iigns and degrees 

 of this are at the top and bottom of the table. 



r l. From the moon's place once equated, fubtracl: 

 the place of the fun's apogee. The iigns and degrees 

 of this are on the right and left of the table. 



The equation is found at the interfeclion of the two 

 arguments: If the fecund argument is in the firft half 

 of the zodiac, and the firft argument in the firft or 

 fourth quarter, the equation is to be added ; in the 

 fecond or third, to be fubtraetcd. But if the feebnd 

 argument is in the fecond half of the zodiac, and the 



firft 



