C 8i8 ^ 
by' the Earths Motion isl, indubitably demonftratcd, . as 
^ppesrsi irbiriilv^psom^dohm bo £>r,:Miliis 6n:that: 
• Mow!}f DPI 'tl^idgebf^hislndex tierefbs dua^n a&ale 
of Degrees,MinutesandSeconds,to the Radius of theGIafs, 
we (hall not only have a very accurate Inftrutnent for the 
hour, but be farniftied widiione whereby we (hall fee the. 
truth of rlie Earths ratJtion,;cbrifirmed by^the accefs and 
recefsof ourStar;tovvards andirom; the.Pole,according to 
the Earths place in the Eciiptick, as that Learned perfon 
above-mentioned has difcovered ^ andthat not only when 
the Star Tranfits the Meridian.but in clear air at any time 
of the day^one (halMikewife obferve- tii^r.Annuai increafe 
of the Po:e Stars declination, catifcdbyrthe Preceflion of 
theEquinox. - ^ - <--^-"«' -^^-^^ ■ ^ 
My own obfervations alTure me/ that- the Pole-Star 
fnay befeen in the day time with a Telefcope of 16 
foot, for with one of this length I faw that Star on the 
26th of April, this prefent year 1701. from 4 a Clock in 
the morning till 7, and cou'd have feen it longer,had not 
Clouds interpofed 5 and again the i ft May, I did not 
lock for the Star till the Sun had been up more than half 
an hour, viz. at 5 in the morning,yet I foon found it,and 
faw it afterwards as oft as I pleafed, till half an hour 
after 9 the fame Morning, fo that I doubt not this Star 
may be feen in a clear day, throughout the whole 
year. 
The Declination of the Pole-Star for tlie year 1700, is 
87 42 51, as I find it by Ricciohis his Catalogue of fixed 
Stars in the Appendix to Sir Edward Sherboum his 
Sphear of Mamlius, &c. Hence its diftance from the 
Pole at this time may beaffumed 2 17. the focal length 
of my objeaciafs is 15 foor 6 inches, fo that the Dia- 
meter of the Ring will be 14 inches, and 84 hundred 
parts of an inch, which is the natural tangent of the 
former arch 2. 17. doubled, a circle large enough to be 
di- 
