INDEX

Air (See Liquid Air).

"A Journeyman Mechanic's" Device, 99

Allaman's Animadversions on the Neglect of Orffyreus's Inventions, 239

Anderson & Enbom's Pump, 76

Archimedean Screw and Liquid, Device by Means of, 104

"Artisan, The," Article Published in, 329

Bags in Liquid, Compressible and Distensible, Device by Means of, 155

Bellidor, B., His Account of Perpetual Motion Device, 46

Bernoulli, John, Notice of, 336 Arguments Supporting Possibility of Perpetual Motion, 336

Black, James, His Device, 102

Böckler, George Andrew, His Plates, 81

Buoyancy Through Media of Different Densities, 151

Brewster, Sir David, Edited Lectures of James Ferguson, 44 In Appendix to Ferguson's Lectures Gives Description of "Water-Blowing Machine", 148 Is Attracted by Spence's Device, and Writes Letter Affording Description of Same, 170

British Patents, 58; 120; 121; 125; 127; 129; 132, 140

British Thermal Unit Defined and Explained, 264

Cannon Balls and Oscillating Trough, 71

Capillary Attraction and Physical Affinity, Devices by Means of (See Table of Contents), 5

Capra, A., His Device, 32

Compressible and Distensible Bags in Liquid, 155

Congreve, Sir William, Notice of; His Perpetual Motion Devices, 182

Conservation of Energy, Its Relation to Possibility of Perpetual Motion (See Table of Contents), 5 Considered with Reference to Perpetual Motion, 269 Proof and Illustration of, 200 Anticipated by Newton, Galileo, Huyghens and Descartes, 272

Copland, Robert, His "Improved Method of Gaining Power", 140

Cunningham, George, His "Mercurial Pneumatic Device", 157

"Darius Green and His Flying Machine", 16

Desagulier, Rev. J. T., Proposition on the Balance, 47 Article of, Concerning the Device of Marquis of Worcester and the Orffyrean Wheel, 222

Dircks, Henry, Title Page Mention, 3 His Books Mentioned, 7 Comments by Author on His Works, 8 Information Furnished by, Rearranged, 9 His Classification of Devices, 19 His "Life, Times and Scientific Labors of the Second Marquis of Worcester", 213 Excerpt from, 228 His Statement Concerning Arguments For and Against the Possibility of Perpetual Motion, 270 Arguments by Others For and Against the Possibility of Perpetual Motion, Published by Dircks, Copied in This Work, 274

Eaton's Perpetual Siphon, 145

"Ed. Vocis Rationis," His Device, 78

Ellis, George Henry (See Rathen & Ellis).

Energy (See Momentum and Energy).

Energy, Conservation of (See Conservation of Energy).

Energy and Heat Convertible and Commensurable, 262

Energy Defined, Explained and Distinguished from Momentum, 203

Enbom and Anderson's Pump, 76

Explanation by Author of Failure of Hydraulic and Hydro-Mechanical Devices, 112 of the Failure of Pneumatic, Siphon and Hydro-Pneumatic Devices, 159 of the Failure of Momentum and Energy Devices, 206 of Failure of Wheels and Weights Devices, 61

Failures (See Explanation of Failures).

Ferguson, James; "Peasant Boy Philosopher," His Device, 43

Fontana, P. Gregorio, Notice of; His Arguments on the Impossibility of Perpetual Motion, 306

Foot-Pound, Defined and Explained, 265

Furman, George H., "A New and Improved Motor," U. S. Patent, 36

Gallileo, His Pendulum Experiment, 267

Gravesande, Prof. S., Letter to Sir Isaac Newton, 236

Haywood, John, His Device, 58

Heat and Energy Convertible and Commensurable, 261

Helmholtz, Notice of, 258

Honecort, Willars de, Account of His Device, 22

Horse-Power, Defined and Explained, 264

Hydro-Pneumatic Devices (See Table of Contents), 5

Hydrostatical Paradox, 118

Hydrostatical Paradoxical Balance, Article on, 305

Hydraulic and Hydro-Pneumatic Devices (See Table of Contents), 5

Inclined Planes and Rolling Weights (See Table of Contents), 5

Inclined Planes and Weights Devices, Unpublished. Noted by the Author, 73

Inclined Planes, Series of, 69

Italian Device, An, 92

Introductory Essay, 11

Jacobus, Dr., His Magnetic Device, 173

Joule, Notice of, 258

Jurin's Device, 176

Kenrick, Dr. William, His Remarks Concerning the Inventions of the Marquis of Worcester and Councillor Orffyreus and Perpetual Motion in General, 228

Langley, Prof. Samuel P., His Attempts and Labors at Heavier Than Air Flight, 14

Lardner, Ignatius, Attempts to Show Impossibility of Crossing Ocean With Steam Power, 14

Leonardo da Vinci (See Vinci).

Läserson, Louis Diodor, His "Improvements in Production of Motive Power", 127

Legge's Hydro-Pneumatic Power Device, 146

Linley, John, His Hydraulic Device, 87

Liquid Air, as a Means of Perpetual Motion, 195

Lord Rayleigh (See Rayleigh).

Mackintosh, F. S., Experiment by, 166

Magnetic Devices (See Table of Contents), 5

Magnetic-Driven Wheel, 164

Magnetic Pendulum, 163

Magnetic Semi-Circle, 172

Mechanic, A Journeyman (See "A Journeyman Mechanic").

Mechanics' Magazine, Article Published in, 278, 353

Media of Different Densities, Devices by Means of Buoyancy Through, 151

Mercurial Pneumatic Device (See Cunningham, George).

Mercury, Inclined Glass Tube and Ball, 68

Momentum, Defined, Explained and Distinguished from Energy, 201

Momentum and Energy, Account and Explanation of Perpetual Motion Devices by Means of, 205

Momentum and Energy, Distinguished and Considered; Attempted Devices for Perpetual Motion by Means of (See Table of Contents), 5

Munro, R., Comments on Mackintosh's Experiment, 169

Newcomb, Simeon, Notice of, 15

Newton, Sir Isaac, Mention of, 135, 220 Letter to from Prof. 's Gravesande, 236

Nicholson, William, Notice of, 315; His Article Against the Possibility of Perpetual Motion, 316

Orchard's Vacuum Engine, 137

Orffyreus, Jean Ernest Eli Bessler (Councillor), His Perpetual Motion Labors (See Table of Contents), 5; Remarks of Author Concerning Claims of, 252

Papin, Dr., Argument by Against the Possibility of Perpetual Motion, 275

Pasley, T. H., Article by, 347

"Pamphleteer, The," Article Published in, 349

Paradox, Hydrostatical, 118

Patents, U. S. (See U. S. Patents); Patents, British (See British Patents).

"Peasant Boy Philosopher" (See Ferguson, James).

Pendulum, Gallileo's Experiment with, 268

Perpetual Motion Defined, 11

Perpetual Pump, 109

Perpetual Motion, Its Possibility Considered with Reference to Conservation of Energy, 269

Perpetual Motion, Consideration of Its Possibility, 270 Arguments Against Its Possibility—Article by Dr. Papin, 275; Article by Rev. John Wilkins, 281; Article Based on Paradoxical Hydrostatical Balance, 305; Article by P. Gregorio Fontana, 306; Article by William Nicholson, 316; Article Published in "The Artisan," 329; Article Published in "Mechanic's Magazine," 278. Arguments Maintaining Its Possibility—Scriptural Arguments, 335; Article by John Bernoulli, 336; Article by P. Christopher Scheiner, 342; Article by T. H. Pasley, 347; Article Published in "The Pamphleteer," 349; Article by J. Welch, 351; Article Published in "Mechanic's Magazine," 353.

Physical Affinity and Capillary Attraction, as a Means of Perpetual Motion (See Table of Contents), 5

Pickering, Peter, His "Atmospheric Engine", 120

Pneumatic Devices (See Table of Contents), 5

Preface, 7

Proposition on the Balance (See Desagulier, Rev. J. T.)

Radium and Radio-Active Substances as a Means of Perpetual Motion (See Table of Contents), 5

Rayleigh, Lord, His Radium Clock, Notice of, 197, 199

Rangley's Patent Roller Pump, Adaptation of, 97

Rathen and Ellis's Device, 129

Rationis, Ed. Vocis (See "Ed. Vocis Rationis").

Rolling Weights and Inclined Planes as a Means of Perpetual Motion (See Table of Contents), 5

Scheiner, P. Christopher, Notice of; Argument by Supporting Possibility of Perpetual Motion, 342

Schirrmeister, Charles, His "Mechanical Movement", 38

Schott, Gaspar, Mention of in Connection with Perpetual Motion, 172, 173

Scriptural Argument, 335

Self-Motive Power Defined, 11

Semi-Circle, Magnetic, 172

Siphon Device for Perpetual Motion (See Table of Contents).

Sims, John, His Perpetual Motion Problem, 106

Sinclair, Prof. George, His Pneumatic Device, 124

Siphon, Eaton's Perpetual, 145

Siphon and Funnel Device, 135

Sleigh, Burrowes, Willcocks Arthur, His Perpetual Motion Labors, 111

Sleigh, William Willcocks, His Perpetual Motion Labors, 110

Sommerset, Edward (Marquis of Worcester) (See Table of Contents), 5

Spence, John, Notice of; His Magnetic Device, 170

Stansel, P. Valentine, Device of, 95

Strutt, Hon. R. J. (See Rayleigh).

Stuckey, William Henry, His "Pneumatic Engine", 121

Theisneri, Joannis, His Magnetic Semi-Circle, 172

Trough, Oscillating and Cannon Balls, 71

U. S. Patents, 36, 38, 76

Vacuum Engine, Orchard's, 137

Vallance, Dixon, His Device, 34

Varley, Richard, His "New Perpetual Moving Power", 132

Vinci, Leonardo da, Notice of, 27; His Perpetual Motion Labors, 29, 32

"Voice of Reason," Device by Author of, 88

Vogel, A. F., His "Hydrostatic General Mobile", 96

Water Blowing Machine, 147

Water-Wheel Driven Pump, 97

Welch, J., Article by, 351

Wheel, Magnetic Driven (See Magnetic-Driven Wheel).

Wheels and Weights Devices (See Table of Contents), 5

Wilckens (See Ludeke and Wilckens).

Wilkins, Rev. John, Argument Denying Possibility of Perpetual Motion, 281

Worcester, Marquis of (Edward Sommerset) (See Sommerset).

X-Ray Machine, Notice of, 16