CONTENTS. 



Page 

 Priestley, Compos, of Water and Phlogiston 518 

 Gray, on Linnaeus's Amphibia and Serpents 521 



Hutchinson, Dryness of the Year 17 US 528 



Piazzi, on an Eclipse of the Sun ,. . 529 



Anderson, a Bituminous Lake in Trinidad.* 531 

 Baillie, Change of Structure in the Ovarium 535 

 Saunders, on the Vegetable and Mineral Pro- 

 ductions of Boutan and Thibet 539 



Priestley, Phlogis. of Spirit of Nitre 557 



Herschel, Observations of a Comet 560 



Marsham, Indications of Spring 56' 1 



Anderson, on a Human Monster ibid 



Waring, Method of Correspondent Values 563 



, Resolution of Attractive Powers . . 572 



Walker, on Congealing Quicksilver 579 



Herschel, a 2d 1000 New Nebulae 586 



Maskelyne, on the Theory of Vision 595 



Nicholson, Experiments on Electricity 599 



Priestley, Vapour of Acids thro' Hot Tubes 602 



Milner, on Nitrous Acid and Air 6o6 



Herschel, on Saturn's Ring and Satellites 6l3, 730 

 Bugge, Observations on Venus and Mars . . 621 

 Hey, account of Luminous Arches 627 



Page 

 WoUaston, F. J. H. on Luminous Arches , . 630 



Hutchinson, B. on the same ibid 



Franklin, J. on the same 631 



Pigott, Edward, on the same ibid 



Austin, on Heavy Inflammable Air 632 



Mills, on the Strata and Volcanic Appear- 

 ances in Ireland and the Western Isles 639 

 Cavendish, Height of a Luminous Arch .. 6^5 

 Priestley, Observations on Respiration .... 6^7 



Roy, Trigonometrical Survey 649 



Russell, P. account of the Tabasheer .... 65$ 

 Blane, on the Nardus Indica, or Spikenard 658 

 Withering, Extraor. Effects of Lightning . . 662 

 Home, of a Child with a Double Head .... 663 

 Wedgwood, a Mineral fi'om N. South Wales 667 

 Blagden, on the Excise of Spirituous Liquors 675 

 Castles, on the Sugar Ants in Grenada .... 688 



Keir, Dissolution of Metals in Acids 694> 



Pigott, Edw. Lat. and Longitudes of Places 709 



Crawford, on the Matter of Cancer 710 



Wildbore, on Spherical Motion 740 



Biogr. Notice of the Rev. Cha. Wildbore . . ibid 

 MarsdeUj on the Hindoo Chronology 742 



THE CONTENTS CLASSED UNDER GENERAL HEADS. 



Class I. Mathematics. 



1. Arithmetic, Annuities, Political Arithmetic, 



Mortality of Males and Females, Clarke.. 122 Survivorships and Reversions,.. . .Morgan. . 475 

 Log. Lines on Instruments, Nicholson 262 The same subject, Morgan. . 529 



2. Algebra, Analysis, Fluxions, Series. 



On Infinite Series, Waring. . 61 On the Sum of Divisors, Waring. , 497 



New Method of finding Fluents, Vince .. 150 Method of Correspondent Values, Waring. . 563 

 Values of Algebraic Quantities,. . Waring. . 191 



3. Geometry, Trigonometry, Land-surveying. 

 Measure of a Base on Hounslow-heath, Roy 22 Trigonometrical Survey, Roy 64 



Class II. Mechanical Philosophy. 



1. Dynamics. 



Precession of the Equinoxes, .... Vince . . 303 Resolution of Attractive Powers,. . Waring 572 

 On Centripetal Forces, Waring 384 On Spherical Motion, Wildbore 740 



2. Astronomy, Chronology, Navigation. 



Variation of the Star (J'Cephei, . . Goodricke 56 On the Comet of 1532 and 1661, Maskelyne 147 



On Changeable Stars E. Pigott 83 Catalogue of 1000 New Nebulae, Herschel 158 



On the Transit of Mercury, .... N. Pigott 135 On a New Comet, Miss Herschel 169 



On the same, E. Pigott ibid Remarks on the same, .... W. Herschel 170 



Latit. and Longitude of York ., E. Pigott 145 Longitude and Node of Saturn, Bugge .. 177 



