Seconds vv^hen th Pole Star tranfits tlie Meridian above 
tht Fok. Dr*'i ie thefc Degrees by 15, it giveih tfie 
Hcjrs, and every Degree under 15 multiplied by 4, 
giveth the Minutes 5 and every Minute iiiukiplied by 4, 
giveth the Seconds, of Apparent time of the Pole-Stars 
Sourniog. ifcarce need to fay t.hat itcorneth under the 
Po,k at 12 hours diftance, only making foaie fmall al- 
lowance for the alteration of the Suns R. Afc. in that 
12 hours time. 
But you may fhoiten your labour,- by ufing Tables. of 
the Suns R. Afc, in Timcj ioftead of his ?\, Afc, in De- 
grees^ &c. which may be found in Sr Jon, ?doors Math, 
Compend. and in divers other Books. 
' If the Sun's R; Afc. exceededi the Pole Stars^ add 360 
degrees, or 14 hours, and then fubft:rafi:« 
The R. Afc. of the Pole-Star is determin'd by Mr 
Flamjieed to be 5.3'. 4'. of Jj//je, Anno 169O5 and the 
increafe of it's R. Afc. in 10 years i'. 16". of Tw/e. There- 
fore this !prefent year 1703 , the R. Afc. of the Pole- 
Star is G^' 35'. 2 2*. of Time. 
Or you may fee when the Pole-Star cometh to the Me- 
ridian, by hanging up a Plumb- line^ and obferving when 
the Thill- Horfe in Charles's called J/i^Wi*; comes near 
the Line, together with the Pole-^Star, on one fide the 
the Pole 5 or the bright Star of the 3d Magnitude ia 
CajJl&peia'sThigh on the other fide, as is reprefented ia 
Fig, 3. 
The foregoing Inftrumeots may be let by any other 
Star, as well as the Pole-Star. But the Pole Star in our 
Northern Hemifphere, is moft convenient, becaufe it 
maketh but a fmall circle round the Pole, and therefore 
moveih flower, and coofequently is longer in traniiting 
the Meridian. And therefore a uiiall error in calcula- 
tion, or a little expence of time in fetting the Inftruixentj 
may be admitted, as little deferviog regard* 
^ The 
