17] ON NEW TABLES OF THE MOON'S PARALLAX. 93 



The Minor Equations of Equatorial Horizontal Parallax are comprised 

 in Table I. 



Table II. contains the Equation depending on the Argument of Evection; 

 Table III. that depending on the Argument of Variation ; and 

 Table IV. that depending on the Argument of Anomaly. 



The formulae employed in their construction are the following, in which 



E denotes Burckhardt's argument of Evection ; 

 V that of Variation ; and 

 A that of Anomaly ; 



and the Arguments of the Minor Equations are denoted by their numbers 

 as in Burckhardt. 



6''34- 6''34 cos (Arg. 1) 



173+ 173 cos (Arg. 2) 



1-46+ 1-46 cos (Arg. 4) 



0'87 + 0'87 cos (Arg. 5) 



071- 071 cos (Arg. 6) 



O'll- O'll cos (Arg. 7) 



0-62- 0-62 cos (Arg. 8) 



1-81- 0-05 cos (Arg. 9) + 1"'81 cos 2 (Arg. 9) 



0'21- 0'21 cos (Arg. 12) 



0-16- 0-16 cos (Arg. 13) 



0'14+ 0'14 cos (Arg. 16) 



0-12+ 0'12 cos (Arg. 23) 



0-10+ O'lO cos (Arg. 25) 



36-81+ 37-22 cos E+ 0"-41cos2# 



26-18- 0-94 cos V+ 26"'34 cos 2F+0"'16 cos 4 V 

 55' 50-92 + 187-1 4 cos A + 10"'27 cos 2A + 0"'64 cos 3A + 0"'04 cos 4.4 



In this formula, a few terms have been neglected, the largest of the co- 

 efficients of which does not exceed 0"'08. 



The sum of the constants in this formula is 3422"'29, slightly differing 

 from what is called the constant of Parallax, in consequence of the change 

 in the form of developement. 



