( 6 19 > 
which hath face been crc&ed for the fame Purpofe 
and upon the like Principles, though it is fomewhat 
different im its Conftru£Hon, for a Reafon you will 
meet with prefently. 
Mr. Molyneitx's Apparatus was compleated and 
htted for obferving about the End of November 1725, 
and on the third Day of “December following, the 
bright Star in the Head of Draco ( marked y by 
Aayer) was for the firft Time obferved, as it parted 
near the Zenith, and its Situation carefully taken 
With the Inftrument. The like Obfervations were 
made on the fth, nth, and nth Days of the fame 
Month, and there appearing no material Difference 
in the Place of the Star, a farther Repetition of them 
at this Seafon feemed needlefs, it being a Part of the 
Year, wherein no fenfible Alteration of Parallax in 
this Star could foon be expected. It was chiefly 
therefore Curiofity that • tempted me (being then at 
Kew, where the Inftrument was fixed) to prepare 
for obferving the Star on December 17th, when 
having adjufted the Inftrument as ufual, I perceived 
that it parted a little more Southerly this Day than 
when it was oblerved before. Not fulpetfting any 
other Caufe of this Appearance, we Jfirft concluded 
that it was owing to the Uncertainty of the Obfer- 
vations, and that either this or the foregoing were 
not fo exacft: as we had before fuppofed ; for which 
Reafon we purpofed to repeat the Obfervation again 3 . 
in order to determine from whence this Difference 
proceeded ; and upon doing it on December 20th 
I found that the Star parted ftill more Southerly than 
in the former Obfervations. This fenfible Alteration 
the more furprized us, in that it was the contrary 
wa J 
