What the problem is, 37
Clock that requires no winding, 38
Watch wound by walking, 39
Clock wound by tides, 41
By electricity, 41
Absurdities, 42
Overbalancing wheels, 43
Dr. Young, on, 44
Bellows action, 45
Hydrostatic paradox, 46
Bishop Wilkins, 48
Archimedean screw, 49
Archimedean screw, by mercury, 51
Congreve's, by capillary attraction, 53
Tube and balls, 56
Tube and rope, 59
Magnetism, 61
Self-moving railway carriage, 63
A child's perpetual motion, 64
Fallacies, 65
Liquid air, 65
Bisulphide of carbon, 66
Frauds, 69
Keeley motor, 69
Geiser's clock, 71
Adams, 71
Redhoeffer, 72
Lukens, 72
How to stop the machine, 73
Marquis of Worcester, 74
Dircks' model, 75
Orffyreus, 77
Possibility of, 78
Peters' micrographs, 141
Philosopher's stone, 97
Phosphorus, discovery of, 101
Pigeon-post, 146
Population, a question of, 165
Power, the, of the future, 40
Ptolemy, on the circle, 15
Puzzles, arithmetical, 170
Railway carriage, self-moving, 63
Ramsay, Sir William, 80, 98
Ratio of diameter to circumference carried to 127 places, 17
Redhoeffer's perpetual motion, 72
Rosicrucius, 100
Rutherford, 16
Schott, Father, and palingenesy, 107
Schweirs, Dr., 52
Scott, Michael, and his slave demons, 6
Scott, Sir Walter, legend of the great Wizard, 6
Powder of sympathy, 112
Self-moving railway carriage, 63
Senses--illusions of, 148
Taste and smell, 149
Heat and cold, 150
Hearing, 150
Touch, 150
Sight--size of spot, 152
Length of lines, 153
Direction of lines, 154
Objects seen through hand, 156
Looking through a brick, 158
Sense, possibility of a new, 123
Shadow going backward on dial, 133
Shakespeare, cost of first folio, 168
Philosopher's stone, 97
Witchcraft, 114
Shanks--value of ratio carried to 707 places, 16
Sharp, Abraham, 16
Sight, sense of, deceived, 152
Smith, James, on squaring circle, 28
Snake lifted by spider, 130
Solvent, universal, 104
Space enlarged by cutting, 126
Spider lifting a snake, 130
Sun-dial--shadow going backward, 133
Taste and smell--illusions, 149
Tides, clock moved by, 40
Will be the great source of power of the future, 40
Time it would take Archimedes to move the world, 171
Touch, sense of, deceived, 150
Transmutation of the metals, 79
Ancient fables, 79
Hermes Trismegistus, 80
Treatises not allegorical, 81
Seven metals, 82
Metals named after planets, 82
Methods of cheating, 83
"Brief of the Golden Calf," 84
Story of unknown Italian, 87
Possibility of effecting, 88
Sir William Ramsay, 89
Effect of such discovery on our currency system, 90
"Tribune," New York, 29
Trisection of angle, 33
Tube and balls, 56
Tube and rope, 59
Universal medicine. See _Elixir of Life_.
Van Ceulen, Rudolph, 16
Wallich, Dr., 35
Watch that is wound by walking, 39
Used as a compass, 134
Webb micrographs, 142
Whewell's refutation of 3-1/8 ratio, 28
Wilkins, Bishop, 48
Witchcraft or magic, 113
Worcester, Marquis of, 74
Writing, fine, 139
Young, Dr. Thomas, 44