The Antiquity of the Problem; Remarks by Dircks, Newton, Galileo, Huyghens and Descartes; Generalizations of; Remarks by Author Concerning the Possibility of Perpetual Motion. Comments from Other Sources: 1 Denying the Possibility of Perpetual Motion,--Article by Dr. Papin; Article by Rev. John Wilkins; Article Based on Paradoxical Hydrostatical Balance; Article by P. Gregorio Fontana; Article by William Nicholson; Article Published in "The Artisan"; Article Published in "Mechanic's Magazine." 2 Asserting the Possibility of Perpetual Motion,--Scriptural Argument; Article by John Bernoulli; Article by P. Christopher Scheiner; Article by T. H. Pasley; Article Published in "The Pamphleteer"; Article by J. Welch; Article Published in "Mechanic's Magazine" 270-357 INDEX Page 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