75. See p.69.
75. See p.69.
76. See p.84.
76. See p.84.
77. It is to this latter circumstance that the Panorama is principally indebted for its magical effects.
77. It is to this latter circumstance that the Panorama is principally indebted for its magical effects.
78. Sir David Brewster has enumerated various extraordinary illusions, which may be thus produced, in his Work on Natural Magic.
78. Sir David Brewster has enumerated various extraordinary illusions, which may be thus produced, in his Work on Natural Magic.
79. Ovid’s Metamorphoses, 10.
79. Ovid’s Metamorphoses, 10.
80. Page138.
80. Page138.
81. From the French termcourant, signifying running.
81. From the French termcourant, signifying running.
82. See page344.
82. See page344.
83. A scientific critic has offered the following just remark upon this passage. “The rocket ascends by a constantly acting force, not by a momentary impulse, as though it were shot from a gun. Supposing the force arising from combustion to be proportionate to the weight of the rocket, as long as the force continues to be generated, the rocket must move in a straight line; after which, having only its own momentum to oppose its gravitation, it will proceed in a parabolic curve.”
83. A scientific critic has offered the following just remark upon this passage. “The rocket ascends by a constantly acting force, not by a momentary impulse, as though it were shot from a gun. Supposing the force arising from combustion to be proportionate to the weight of the rocket, as long as the force continues to be generated, the rocket must move in a straight line; after which, having only its own momentum to oppose its gravitation, it will proceed in a parabolic curve.”
ADDITIONAL NOTES;ADDRESSED MORE ESPECIALLY TOPARENTS AND PRECEPTORS,OR TOTHOSE ADVANCED IN SCIENCE.
ADDITIONAL NOTES;ADDRESSED MORE ESPECIALLY TOPARENTS AND PRECEPTORS,OR TOTHOSE ADVANCED IN SCIENCE.
ADDITIONAL NOTES;
ADDRESSED MORE ESPECIALLY TO
PARENTS AND PRECEPTORS,
OR TO
THOSE ADVANCED IN SCIENCE.