212 



THE ORBIT OF URANUS. 



The period of arguments 1 to 9 is 600. 



In January and February of those years which, though divisible by 4, are not 

 leap years, namely, 1700, 1800, 1900, 2100, etc., Table IV must be entered with 

 a number 1 greater than tlie real day of the month. 



