CONTENTS. 



P.igc 



Dr. Mortimer, on the same Subject 668 



J. Logan, on T. Godl'rey's Improvement of 

 Davis's Quadrant 669 



Page 

 Rd, Graham, New Instrument for the Lat. 673 

 Dr. Derham, on Meteorological Diaries . . 67S 



THE CONTENTS CLASSED UNDER GENERAL HEADS. 



Class I. Mathematics 



1. Arithmetic, Political Arithmetic, Aged Persons, j^nnuities. Logarithms, i^c. 



General Mortality Bills, Dr. Sprengell 10 Dresden Bills of Mortality, Sprengell 61O 



Negativo-Affirmative Arith. J. Colson . . l63 Augsburg ditto ibid 



Bills of Mortality, Dr. Sprengell 214 Remarks on ditto, Wm. Maitland ibid 



, J. G. Scheuchzer 345 



2, Algebra, Analysis, Fluxions, &c. 



On Impossible Roots, C. Maclaurin 145 The Roots of Equations, C. Maclaurin . . . 340 



On the same, George Campbell 264 Quadrat, of Hyperb. Curves, Klengenstiern 462 



3. Geometry. 

 Quadrat, of Hyperb. Curves, Klingenstiern 462 



Class II. Mechanical Philosophy. 

 1. Dynamics, 



On Pendulum Rods, Geo. Graham 129 



On Moving Forces, John Eames 166 



Remarks on the same, J. Eames I69 



On a prop, in Newton's Prin., B. Robins . . 181 



On Motive Forces, John Eames 203 



On the same. Dr. Samuel Clarke 



Cause of Cohesion, Fr. Triewald .... 

 Fig. of Revolving Fluids, Maupertuis 

 Momentum of Bodies, Desaguliers . . . 

 Lengths of Pendulums, Geo. Graham 



1. Statics. 



On Specific Gravaties, Fahrenheit 32 On a Spirit Level, J. Hadley 



3. Astronomy, Navigation, Chronology. 



Observations of a Comet, Ja. Bradley . . . . 



On the same Subject, Ld. Paisley 



On the same, Bianchini 



On a Solar Eclipse, Thos. Robie 



Lunar eclipse observed in Italy 



Eclipses of Jup. Satellites, Wm. Burnett. . 



Lunar Eclipse at Lisbon, Fa. Carbone 



Eclipses of Jup. Satellites, by the same . . 



13 Transit of Mercury, 1723, Dr. Halley . 



15 A Chronological Index, Sir I. Newton , 



16 On Flamsteed's Historia Coelestis 



20 The Marine Surveyor, H. de Saumarez . 



21 On a Lunar Eclipse, J. Barron 



49 Celestial Observations, Geo. Lynn 



55 Eclipses of Jup. Satellites, Fa. Carbone 



ibid Astronom. Observ. at Toulon, Fa. Laval . 



219 

 336 

 519 

 6I8 

 649 



620 



101 

 125 



132 

 143 

 144 



