PRINCIPAL SUBJECTS IN THE CYCLOPEDIA OF ARTS AND SCIENCES, 



WITH THE NAMES OF THE CONTEIBUTOES AND BEVISERS. 



MATHEMATICS AND ASTEONOMY. 



Contributor* : Penny Cyclopaedia. 



G. B. AIRY, A.M., Trinity College, Cambridge. Astronomer Royal. 

 A. DE MORGAN, A.M., Trinity College, Cambridge, Professor of Mathe- 

 matics at University College, London. 

 T. GALLOWAY, A.M., F.R.S. 



J. Lt CAPPKLAIN, Actuary of the Albion Insurance Company. 

 REV. B. SHEEPSHANKS, A. M. (the late), Trinity College, Cambridge. 



Contributors and Kevisers: English Cyclopaedia. 



G. B. AIRY. 

 A. DE MORGAN. 



A. CAYLEY, F.R.S., F.R.A.S. 



B. GRANT, A.M., F.B.A.S., Professor of Astronomy In the University of 



Glasgow. 



The following Articles occur in Otis Department : 



BY THE ASTRONOMER ROYAL. 

 Gravitation. 



Algebra ; Annuity and Assurance ; 

 Analysis ; Calculus ; Category ; 

 Combinations and Permutations ; 

 Computation ; Curvature ; Curve ; 

 Differentiiil Oilrulus; Discount; 

 Easter, Modes of Finding ; Klimi- 

 nation ; Invention and Disco- 

 very ; Fluxions ; Involution and 

 Evolution ; Observation and Ex- 

 periment ; Operation ; Organon ; 

 Periods of Revolution; Prime; 



BY PROFESSOR DE MORGAN. 



Principia; Probability; Propor- 

 tion; Quadrature of the Circle; 

 Ratio; Regular Figures; Rever- 

 sion; Root; Scale; Series; Sine 

 and Coeiue ; Slide Rule ; Spherical 

 Trigonometry ; Square Root ; Ta- 

 ble ; Taylor's Theorem ; Tempe- 

 rament and Tuning ; Tetrachord : 

 Theory and Practice; Theory of 

 Couples; Theory of Equations; 

 Transcendental ; Transformation 



of Co-ordinates; Trigonometrical 

 Tables ; Trigonometry ; Trochoidal 

 Curves ; Universal and Particular ; 



Variations, Calculus of ; Velocity ; 

 Virtual Velocity ; Vortex; Wager; 

 Weights and Measures. 



BY THE REV. R. SHEEPSHANKS. 

 Repeating Circle ; Sextant ; Transit Instrument ; Zenith Sector. 



BY PROFESSOR GRANT. 



Asteroids; Astronomy; Earth, Mean 



Density of ; Nebulas ; Neptune ; 



Saturn ; Solar Eclipse ; Solar 



System, Motion of the; Star; 



BY A, CAYLEY. 

 Mathematics, Recent Terminology in. 



Double Star ; Taurus ; Uranus ; 

 Ursa Major and Minor; Variable 

 Stars ; Weights and Measures, 

 Standard. 



PHYSICAL SCIENCES: 



OPTICS; ACOUSTICS; DYNAMICS; ELECTRICITY; MAGNETISM; METEOROLOGY. 



Contributors: Penny Cyclopaedia. 



A. DE MORGAN. 



Rev. R. MURPHY (the late), Caius College, Cambridge. 



Professor NARRIEX. 



T. BRADLEY, King's College. 



Contributors and Revisers: English Cyclopaedia. 



A. DE MORGAN. 



G. G. STOKES, Lucasian Professor in the University of Cambridge. 



C. TOMLINSON, Lecturer on Physical Science, Kings College School. 



E. W. BRAYLEY, F.R.S., of the London Institution. 



ANDREW and THOMAS ROBS. 



G. R. SMALLEY, King's College School. 



R. GRANT, A.M., Professor of Astronomy, Glasgow. 



The following Articles occur in this Department : 



BY PROFESSOR STOKES. 



Absorption of Light ; Elliptic Po- 

 larisation ; Interference (in Op- 

 tics). 



Light. By Professor 0. G. Stokes 

 and the late R. Murphy. 



Geodesy. By the late Rev. R. Mur- 

 phy ; T. Galloway, Actuary of the 

 Amicable Insurance Society ; and 

 K. Grant. 



Gyroscope. By the Rev. Charles A. 

 Tomlinson, Worcester College, Ox- 

 ford. 



Heat. By the late R. Murphy and 

 C. Tomlinson. 



Mi I..-,.,,|.-. 



EMM K..-.I. 



By Andrew and Tho- 



Optics; Polarisation of Light; Rain 

 bow; Scioptic Ball; Sight; Spec- 

 trum ; Undulatory Theory of 

 Light. 



Pendulum; Pneumatics; Power. By 



Professor A. De Morgan and C. 



Tomlinson. 

 Perspective. By Thomas Bradley, 



of King's College. 

 Terrestrial Light; Terrestrial Map 



netism. By G. R. Smalley, of 



King's College School. 

 Rivers ; Seas ; Surface of the Earth. 



By the late W. Wittich, and E. W. 



Brayley, F.R.S. 

 Climate. By the lato W. Wittich. 



BY E. W. BRAYLEY. 



Avalanche ; Bore ; Calm ; Cloud ; 

 Deserts; Dew; Dunes or Downs; 

 Dust, Atmospheric ; Earthquakes ; 

 Hail and Hailstorms ; Meteoro- 

 logy ; Meteors ; Physical Forces 

 (Correlation of); Plains; Rain; 



Reefs ; Refrigeration of the Globe ; 

 Seismology; Snow. &c. ; Thaw 

 Vacuum, or Void ; Valleys ; Volca- 

 noes ; Water ; Water-Spouts ; 

 Waves and Tides; Whirlpool ; 

 Winds. 



BY C. TOMLINSON. 



Aero-Dynamics; Anemometer; At- 

 traction; Barometer; Breath-Fi- 

 gures ; Capillary Attraction 

 Chess ; Cyanometer ; Diffusion 

 Ebullition; Elasticity; Electrica 

 Light, and Machine; Electricity 

 Electro - Magnetism and Metal 

 lurgy; Galvanism; Hydrostatics 

 Lightning and Lightning Con 

 ductor; Magnetism; Repulsion 



Self- Registering Instruments ; 

 Specific Gravity; Specific Heat; 

 Speculum ; Telegraph, Electric; 

 Telescope ; Thermo - Electricity ; 

 Thermometer ; Thunder ; Torsion ; 

 Transparency ; Transpiration ; Tu- 

 ning-Fork; Twinkling of Stars; 

 Wedge; Weighing-Machines; Wheel 

 and Axle. 



Contributors: Fenny Cyclopaedia. 

 W. H. BROOKE. 

 Dr. DAY. 

 B. PHILLIPS, P.R.8. (the late). 



CHEMISTRY. 



Contributors and Kevisers: English Cyclopaedia. 



E. FRANKLAND, Ph.D., F.R.S., Lecturer on Chemistry, St. Bartholomew's 



Hospital. 



Dr. ATKINSON, F.C.S., Lecturer on Chemistry, Cheltenham College. 

 J. ATTFIELD, Demonstrator of Chemistry, St. Bartholomew's Hospital. 

 Dr. GUTHRIE, F.C.8., Professor of Chemistry, University of Mauritius. 



The Articles on Chemistry in "The Penny Cyclopaedia," which were chiefly contributed by the late R. PHILLIPS, had a high 

 reputation at the period of their publication. But tlie enormous advance of chemical science has called for an entire 

 remodelling of this department of "The English Cyclopicdia." That labour has been accomplished by Dr. E. FllANKLAND, 

 vrith the occasional assistance enumerated above. The following arc amongst the Articles thus prepared; 



Alcoholometry ; Alcohols ; Alkali- 

 metry ; Antimony ; Arsenic. De- 

 tection of ; Atomic Volume ; Base ; 

 Benzoic Acid and Group ; Bro- 

 mine ; Bronte ; Caffeine ; Cam- 

 phor ; Caoutchouc ; Carbamic 

 Acid ; Chemical Analysis ; Equi- 

 '~i Formula and Nomencla- 



ture ; Chromium ; Cinchona, Alka- 

 loids of ; Citric Acid ; Colouring 

 Matters ; Copper ; Cuminic Acid ; 

 Cyanogen ; Electro -Chemistry ; 

 Eremacaums ; Erythric Acid ; Es- 

 sential Oils; Ethers; Ethyl; Gas; 

 Gas Lighting ; Gasometric Ana- 

 lysis ; Methyl, and its Com- 



pounds ; Nitric Acid ; Nitrogen, 

 and its Compounds ; Oleic Acid ; 

 Alkaloids of Opium ; Organic Ana- 

 lyses ; Organic Bases ; Organic 

 Chemistry ; Organic Compounds ; 

 Organic Radicals ; Organo-Metallic 

 Bodies ; Osmose ; Palladium ; Po- 

 tassium { Salicylic Group; So- 



dium, &c.; Succinic Group; Sugar; 

 Sulphur, tc. ; Tannic Acid and 



Mntuu ; Uranium ; Urea ana 

 Uric Group ; Valerianic Group ; 

 Water ; Wine ; 2inc ; Zirconium. 



