VIII.—ON THE SELECTION OF OBJECTS FOR THE KALEIDOSCOPE, AND ON THE MODE OF CONSTRUCTING THE OBJECT-BOX, 67 IX.—ON THE ILLUMINATION OF TRANSPARENT OBJECTS IN THE KALEIDOSCOPE, 76 X.—ON THE CONSTRUCTION AND USE OF THE TELESCOPIC KALEIDOSCOPE, FOR VIEWING OBJECTS AT A DISTANCE, 81 XI.—ON THE CONSTRUCTION AND USE OF POLYANGULAR KALEIDOSCOPES, IN WHICH THE REFLECTORS CAN BE FIXED AT ANY ANGLE, 88 1. Bate’s Polyangular Kaleidoscope with Metallic Reflectors, 89 2. Bate’s Polyangular Kaleidoscope with Glass Reflectors, 94 XII.—ON THE CONSTRUCTION AND USE OF ANNULAR AND PARALLEL KALEIDOSCOPES, 98 1. Mr. Dollond’s Universal Kaleidoscope, 100 2. Ruthven’s Universal Kaleidoscope, 102 XIII.—ON THE CONSTRUCTION AND USE OF POLYCENTRAL KALEIDOSCOPES, 105 1. On combinations of four mirrors forming a square, 107 2. On combinations of four mirrors forming a rectangle, 109 3. On combinations of three reflectors at angles of 60°, 109 4. On combinations of three reflectors at angles of 90°, 45°, and 45°, 111 5. On combinations of three reflectors at angles of 90°, 60°, and 30°, 112 XIV.—ON KALEIDOSCOPES IN WHICH THE EFFECT IS PRODUCED BY TOTAL REFLEXION FROM THE INTERIOR SURFACES OF TRANSPARENT SOLIDS, 114 XV.—ON THE APPLICATION OF THE KALEIDOSCOPE TO THE MAGIC LANTERN, SOLAR MICROSCOPE, AND CAMERA OBSCURA, 117 XVI.—ON THE CONSTRUCTION OF KALEIDOSCOPES WHICH COMBINE THE COLOURS AND FORMS PRODUCED BY POLARIZED LIGHT, 122 XVII.—ON THE CONSTRUCTION OF STEREOSCOPIC KALEIDOSCOPES, 126 XVIII.—ON THE CONSTRUCTION OF MICROSCOPIC KALEIDOSCOPES, 128 XIX.—ON THE CHANGES PRODUCED BY THE KALEIDOSCOPE, 131 XX.—ON THE APPLICATION OF THE KALEIDOSCOPE TO THE FINE AND USEFUL ARTS, 134