IV 



CONTENTS. 



2. Algebra, yinalysis, Fliixions. 



Page 



On the Roots of Equations, . . Rowning . . 48 Computation of Fluents, .... linden. . 

 Theorems for Areas, Landen. ... ^^ 



3. Geometry, Trigonometry, Land-surveying. 



On the Conic Sections, Jones -4.58 Triangles in and about Circies, Stedman 



Castillion on Sir I Newton, . . Winthrop. . .S 1 8 Polygons in and about Circles, Horsley . 



Geometrical Theorems, Lexel <)46' Calcul. in Splierical Trigon., , . Lyons . . 



On Hyperbolic Arcs, I^anden. . . . 6*7 



160 



65} 



653 

 690 



Class If. Mechanical Philosophy. 



1 



Proposal to Measure the Attrac- 

 tion of Hills, Maskelyne 



2. Astronomy, 



On the Transit of Venus, .... Dunn 



Voyage to Hudson's Bay, .... Wales .... 



Transit of Venus, Deyloss . . . 



On the same, . . Pigot 



Occultation of a Star, Ludlam . . . 



Transit of Venus, Winthrop. . 



On the same, Mallett 



On the same, Rose 



On the same, Mason .... 



On the same, Pingre .... 



Eclipses of Jupiter's Satellites, Heberden. . 



Transit of Mercury, Smith 



Transit of Venus, Doz 



On the same, Bouniot . . . 



Transit of Mercury, Wintlirop. . 



A New Comet, Messier . . . 



An Equatorial Observatory, . . Naime .... 



Transit of Venus, . . Green .... 



On the same, Capt. Cook 



Transits of Venus & Mercury, Mohr 



Moon's Parallaxes and Eclipses, Pemberton 

 Micrometer Measurements, . . Maskelyne 

 Sun's Parallax determined, . . . Hornsby . . 

 Astronomical Observations, . . Witchell , . 

 Use of the Micrometer, Bradley . . . 



'Dynamics. 



Mea.sures for the Attraction of 

 700 Mount Scheliallien, Maskelyne 702 



Chronology, Navigation. 



14 Sun's Parallax determined, . . Euler, jun. . 



On Hadley's Quadrant, Maskelyne 



On the Indian Zodiac, Call 



An Astronomical Problem, . . . Pemberton 

 Astronomical Observations, . . Wollaston. . 



Motion of Arcturus, Hornsby . . 



Obliquity of the Ecliptic, .... Idem 



On Jupiter's Satellites, Bailly . . . . 



Notes on the same, Hornsby . . 



On the Solar Spots, Wilson . . . . 



Astron. Observ. at Pekin, .... Cipolla. . . . 



22 



47 



49 



59 



60 



61 



78 



80 



81 



82 



83 



91 



92 



93 



104 



ibid 



174 



ibid 



180 



181 



204 



220 



276" 



277 



Cross Wires of Telescopes, . . Wilson. . . . 507 

 Disparition of Saturn's Ring, . . Varelaz . . . 509 

 Eclipses of Jupiter's Satellites, Holland . . . 526 



On the same, Sproule . . . ibid 



Astronomical Observations, . . Holland . . . 527 

 Eclipses of Jupiter's Satellites, Maskel. ibid 5^8 



On the Solar Spots, Marshall. , 



Astronomical Observations, . . Wollaston. . 



Occultations observed, Lexel .... 



Astronomical Observations, . . Wollaston 

 Astronomical Observations, . . Ludlam . . . 

 Time by Equal Altitudes, .... Aubert. . . . 



52y 

 532 

 646 

 650 

 665 

 734 



On Pendulums,, , 



4. Mechanics. 

 • Mallett 61 



5. Pneumatics. 



New Wheel Barometer, .... Fitzgerald . 



Observations on Airs, Priestley . . 



Explosion in a Coal-Pit, Barnard . . 



Effluvia of Putrid Marshes, . . Priestley . . 

 On the same subject, Price 



17 

 313 

 432 

 502 

 505 



De Luc's Rules for Bar. Heights, Maskelyne 520 



The same, Horsley 530 



Portable Wind-Gage, Lind 66 1 



Fiuther Discoveries in Air, Priestley . . 666" 



On a Young Musician, 



6. Acoustics, Music. 

 . Barrington 1 1 



