[ 33 ] 
.and which, by reafon of its Luftrc and Pofition, 
gave me the Opportunity of making my Series of 
Obfervations of It , more complete than of many 
others. This Star was compared with the Point 
marked 39°. 1 yf and was South of it as in the fol- 
lowing Table-; wherein your Lordfnip will fee, that 
the Obfervations of the Years 1740 and 174 ,r give 
the Polar Difiances 3" greater, than the mean of the 
other Years. Had there been only a fiiigle Obfer- 
vation taken in either of thofc Years, Part of this 
apparent Difference might have been fuppofed to 
arife from their Uncertainty 5 but as there were 8 
-Obfervations taken within a Week, either before 
or after the 3d Day of June 1740, which agree 
well with each other , and three were made within 
20 Days in September 1741, which likewife corre- 
fponded with each other ; I am inclined to think, 
that the Toremention’d Differences muft be owing 
to fomething elfe, bclides the Error of the Obfer- 
vations. This ‘Phenomenon therefore may deferve 
the Con fide rat ion of thofc Gentlemen, who have 
employed their Time in making Computations re- 
lating to the Quantity of the Effects, which the 
Power of Gravity may, on various Occafions, pro- 
duce. For I fufpect, that the Pofition of the Moon's 
Apogee, as well as of her Nodes, has fome Relation 
to the apparent Motions of the Stars that I am now 
f peaking of. 
My Series of Obfervations of fevera'l Stars abound, 
of late Years, with fo many and long Interruptions ; 
that I cannot pretend to determine this Point ; but 
probably the Differences before taken notice of in 
the Obfervations of a CaJJiopee , and fome others 
E that 
