C 39 3 
the 35th Camelopard. Hevel. was South of the 
fame Spot So that the mean Polar Diftance 
of y ^Draconis was only 3 ". 4 greater, than that of 
the 35th Camelopard. Hevel. but as the Equation 
for the Nutation, in both thefe Stars, was then near 
the Maximum , and to be applied with contrary 
Signs 5 the Apparent Polar Diftance of y 'Dracoms 
was 21". 4 greater, on the 27th Day of March 
1 7 2 7 - 
The Differences of the Polar Difiances of the 
Stars, as here fet down, may be prefumed, both on 
account of the Radius of the Inftrument and the 
Number of Observations, to be very exa&ly deter- 
mined, to the Time when the Moon’s Afcending 
Node was at the Beginning of Aries j and if a like 
Companion be hereafter made, of Obfervations taken 
of the fame Stars, near the fame Pofition of the 
Moons Nodes; future Aftronomers may be enabled, 
to fettle the Quantity of the mean Prcceffion of the 
Equinox, fo far as it affeds the Declination of thefe 
Stars, with great Certainty : and they may likewife 
difeover, by means of the Stars near the Solfiitiai 
Colure, from what Caufe the apparent Change in 
the Obliquity of the Ecliptic really proceeds, if the mean 
Obliquity be found to diminifh gradually. 
The ’forementioned Points indeed can be fettled 
only on the Suppofition, that the angular Difiances 
of thefe Stars do continue always the fame, or that 
they have no real Motion in themfelves; but arc 
at Refi in Abfolute Space. A Suppofition, which 
though ufually made by Afironomers, nevertheless 
feems to be founded on too uncertain Principles, to 
be admitted in all Cafes. For if a Judgment may be 
formed, with Regard to this Matter, from the Re- 
fill t 
