xii SCIENCE FROM AN EASY CHAIR 



FIG. PAGB 



61. SINGLE EGG-TUBE OR OVARIAN TUBE OF AN INSECT . 329 



62. THE DEATH-WATCH BEETLE (XESTOBIUM TESSEL- 



LATUM) . . . . . . .35 



63. THE SILVER-FISH INSECT (LEPISMA SACCHARINA} . 353 



64. THE BOOK-LOUSE, OR ATROPOS DIVINATORIA . . 354 



65. THE HUMAN SKULL FROM THE CHAPELLE-AUX-SAINTS 370 



66. AN UNPOLISHED BUT BEAUTIFULLY CHIPPED FLINT 



KNIFE OF THE NEOLITHIC AGE . . .374 



67. A POLISHED FLINT AXE-HEAD OF THE NEOLITHIC AGE 375 



68. HARPOONS OF THE PALAEOLITHIC PERIOD . . 379 



69. A PIECE OF MAMMOTH IVORY CARVED WITH SPIRALS 



AND SCROLLS . . . . . .380 



70. CARVING ON AN ANTLER OF A GROUP OF THREE RED 



DEER AND FOUR FISHES . . . .381 



71. PAINTING OF A BISON ..... 382 



72. BACK AND FRONT VIEW OF A FLINT IMPLEMENT OF 



THE MOUSTIER TYPE .... 384 



73. FLINT PICK FROM THE LOWER PLEISTOCENE OF THE 



THAMES VALLEY . . . . . .387 



74. A ROUGH TYPE OF FLINT IMPLEMENT FROM THE 



LOWER PLEISTOCENE OF THE SOMME VALLEY . 388 



75. A PROFILE AND A FRONT VIEW OF THE SKULL AND 



LOWER JAW OF A MAN OF THE CROMAGNARD RACE 



OR REINDEER MEN ..... 389 



76. THREE VIEWS OF THE SKULL-TOP FROM NEAR DUSSEL- 



DORF ON THE RHINE, KNOWN AS THE NEANDERTHAL 

 SKULL .... ... 392 



77. THE GIBRALTAR SKULL FROM A CAVE IN GIBRALTAR . 394 



78. THE SKULL-TOP OF THE PRIMITIVE KIND OF MAN 



FROM PLEISTOCENE SANDS IN JAVA, CALLED PITHEC- 

 ANTHROPUS ...... 400 



79. DRAWING OF THE LEFT SIDE OF THE LOWER JAW OF 



A MODERN EUROPEAN ..... 404 



80. OUTLINE OF THE SKULL OF THE NEANDER MAN FROM 



THE CHAPELLE-AUX-SAINTS .... 404 



