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[[right margin notes not related to text]] 
No elasticity of the air 
How caused 
Of Matter, Electric [[abbreviation "per se"?]] and [[underline]] non [[/underline] electric  
They will not mix together, thence conjectured what Attraction of Cohesion is. V. p. 46. 
Attraction of Cohesion, no essential property of Matter.
Cause thereof.
[[/right margin]] 

equal to the double tangent of the distance of the neat star to the pole-star, from the pole.  The Instrument thus prepared, look thro' the sight, & bring the two circles to the two stars, whose distances from the pole they represent; a Line, passing through [[the]] sight and center of the circles, is the elevation of the pole: and two plumb-lines hung up, one over the sight, the other over the center of the 2 circles, will exactly lye in the meridian of the Place. 
[[left margin]] Several Methods of mine to find a true Meridian. 1st with the Pole * and [[underline]] Alioth [[/underline]] having the same R[igh]t. A. V. Prob. on p.122. [[/left margin]] First way. As the motion of the north pole Star is very slow and that of Alioth in the great bear's tail pretty swift, these two are very proper for the purpose. and Suppos ^ [[insertion]] ing [[/insertion]] [[strikethrough]] e [[/strikethrough]] them to have exactly the same or 180°. difference of Right Ascension, (which they had in the [[strikethrough]] year [[/strikethrough]] middle of the year 1760) then two plumb lines cutting each other and [[strikethrough]] also [[/strikethrough]] both these stars at the same instant of time will be in the Meridian. As [[underline]] Alioth [[/underline]] is visible upon the meridian under the pole. [[strikethrough]] from [[/strikethrough]], in these Northern Latitudes of [[underline]] England [[/underline]], from about the 13 [[strikethrough]] 8 [[/strikethrough]]th of [[underline]] December [[/underline]] to the 16th of [[underline]] January [[/underline]] N.S. (but the Globe at 12°. depression of the sun, makes it from the 1st of December to the 10th of January.) [[insertion]] V. prob. on p.122. [[/insertion]] This observation may be made in a clear night during all that time. 

[[left margin]] Difficulty of not having the same R. A. removed [[/left margin]] [[strikethrough]] But should they not have the same Right Ascension or 180° difference which is most likely to be the case [[/strikethrough]] Since ^ [[insertion]] the R[igh]t Ascension [[/insertion]] [[strikethrough]] that [[/strikethrough]] of the Pole star has now overtaken that of [[underline]] Alioth [[/underline]] and the excess of ^ [[insertion]] its [[/insertion]] increase [[strikethrough]] of the former [[/strikethrough]] above that of [[strikethrough]] the latter [[/strikethrough]] ^ [[insertion]] Alioth [[/insertion]] will continue a great number of Ages to come, they will not have the same Right Ascension or 180°. difference; therefore it remains to find how far the plane of the two lines are from the Meridian: to do who which, [[left margin]] V. Scholia on p.113 [[/left margin]] in Fig. 34.  Z is the Zenith, P the North pole, ZPE the Meridian, GAD, the path described by the pole Star; EBF that by [[underline]] Alioth [[/underline]] and ZAB, the plane of the two plumb lines; then AP = 1°56'48" (in 1765) the Co-declin. of the pole Star, BP = 32°43'30", co-declin. of [[underline]] Alioth [[/underline]], and < APB = 179°50'23 1/2" the difference of their Right Ascensions. [[strikethrough]] Nor in in the ∆ APB, [[/strikethrough]] let fall the perpendicular AC upon BP produced; then pspherics, making < APC Middle part, As Rad: Cos. APC (= Suppliment of APB):: Tang. AP: Tang. CP; then BP + CP = BC: And As S. BC: S. PC::
Continued on p. 49.