LIST OF ILLUSTRATIONS ON WOOD. xxiii 



FIO. PAGE 



48. Clearing the rubbish in the Alpine tunnel 74 



49. Section of carrier 79 



50. The New York atmospheric railway 80 



51. The interior tube of a carriage 80 



52. Nero's fountain 81 



53. Foundation of the piers of the bridge of Kehl by the use of compressed 



air 83 



54. Ascension of soap-bubbles filled with hydrogen 88 



55. Pilatre de Rozier and Arlandes' first aerostatic ascent, October 21, 1783 90 



56. Gas-balloon 92 



57. Car of the balloon Le Pole nord 93 



58. Operation of inflating a balloon with hydrogen gas 94 



59. Valve of the balloon Entreprenant 96 



60. Valve of the balloon Le Pole nord < 97 



61. A balloon fitted with its parachute 98 



62. Departure of a balloon from the works of La Villette 100 



63. Mr. Glaisher's car ready for a scientific expedition 103 



64. Speaking-tube, mouth-piece, and whistle 108 



65. The invisible woman 109 



66. Speaking-trumpet 110 



67. The horn of Alexander the Great (Kircher) 110 



68. Speaking-trumpet in the merchant service Ill 



69. Ear-trumpets 113 



70. The triangle 120 



71. Harmonica with plates of glass 121 



72. Musical-box 122 



73. Sistrum of Isis 122 



74 and 75. Sistra of the ancient Egyptians 122 



76. Jew's harp 123 



77. Cymbals .123 



78. Japanese bonzes or priests striking the gong and playing on cymbals . 124 



79. Section of a bell 126 



80. Outside view of bell 126 



81. Japanese bell at Kioto 127 



82. Sonnantes 128 



83. Old arrangement for chimes 129 



84. Modern key-board carillon at St. Germain FAuxerrois 130 



85. The tambourine 131 



86. European military drums 131 



87. Orchestral kettle-drums 132 



88. Persian drums 132 



89. Hing-Kou 133 



90. The hazar of the Jews 135 



91. The nebel 135 



92. Thekinnor. . 136 



93. The harp of the Hebrews 136 



94. The tetrachord and the heptachord 137 



95. Ancient lyres or cithars . . 137 



