50. Gower Street Station, Metropolitan Railway 115 51. Map of the Route of Pacific Railway 117 52. Trestle Bridge 118 53. American Canyon 119 54. “Cape Horn” 121 55. Snow Plough 122 56. First Steam Railroad Train in America 123 57. Railway Embankment 124 57_a_. Train ascending the Rigi 126 57_b_. At the summit of the Rigi 127 58. The _Great Eastern_ at Anchor 129 59. Casting Cylinder of a Marine Steam Engine 131 60. Screw Propeller 132 61. Section of _Great Eastern_ Amidships 134 62. The _Great Eastern_ in course of construction 135 63. The _Great Eastern_ ready for launching 136 64. Comparative sizes of Steamships 137 65. The ss. _City of Rome_ 138 66. The _Castalia_ in Dover Harbour 140 67. The same—End View 141 68. Bessemer Steamer 142 68_a_. A Whaleback Steamer, No. 85, built at West 146 Superior, Wisconsin 69. H.M.S. _Devastation_ in Queenstown Harbour 149 70. Section of H.M.S. _Hercules_ 151 71. Section of H.M.S. _Inconstant_ 153 72. Section, Elevation and Plan of Turret of H.M.S. 154 _Captain_ 73. H.M.S. _Captain_ 155 74. Diagram of H.M.S. _Captain_ 158 75. Ditto 159 76. H.M.S. _Glatton_ 162 77. H.M.S. _Thunderer_ 163 78. The _König Wilhelm_ 165 78_a_. The _Victoria_ leaving Newcastle-on-Tyne 166 78_b_. Firing at Floating Battery 168 79. Krupp’s Works at Essen, Prussia 169 80. Trajectory of a Projectile 174 81. Diagram for Trajectory of a Projectile 176 82. Muzzle-loading Musket and Rifles (obsolete 179 patterns) 83. The Minié Bullet 181