56. Map--Western Europe during the Third Interglacial Stage 116 57. Three terraces on the Connecticut River 120 58. Four forms of the Chellean coup de poing 121 59. Section--Terraces on the Somme at St. Acheul 122 60. Very primitive palæoliths from Piltdown 127 61. Pre-Chellean coups de poing from St. Acheul 128 62. Pre-Chellean _grattoir_ or planing tool from St. Acheul 129 63. Discovery site of the Piltdown skull 131 64. Section of the Piltdown discovery site 133 65. Primitive worked flint found near the Piltdown skull 134 66. Eoliths found in or near the Piltdown site 135 67. Piltdown skull and skull of South African Bushman 136 68. Restoration of the Piltdown skull, three views 137 69. Section of the Piltdown skull, showing the brain 140 70. Brain outlines of the Piltdown man, of a chimpanzee, and of modern man, compared 140 71. The Piltdown man, side view 142 72. The Piltdown man, front view 143 73. Map--Pre-Chellean and Chellean stations 149 74. Section--Middle and high terraces on the Somme at St. Acheul 150 75. Excavation on the high terrace at St. Acheul 151 76. Small Chellean implements 153 77. Map--Palæolithic stations of Germany 160 78. Entrance to the grotto of Castillo 163 79. Section--archæologic layers of the grotto of Castillo 164 80. Map--Acheulean stations 167 81. Late Acheulean station of La Micoque in Dordogne 168 82. Method of 'flaking' flint 169 83. Method of 'chipping' flint 170 84. The fracture of flint 171 85. Large Acheulean implements 173 86. Map--Valleys of the Dordogne and the Garonne 175 87. The valley of the Vézère 176 88. Acheulean implements, large and small 178 89. A Levallois flake 179 90. The grotto of Krapina 181 91. Section Valley of the Krapinica River and grotto of Krapina 182 92. Section--The grotto of Krapina 183 93. Skull from Krapina, side view 184