V. BIELA'S COMET 408

VI. THE UNIVERSAL BELIEF OF MANKIND 424

VII. THE EARTH STRUCK BY COMETS MANY TIMES 431

VIII. THE AFTER-WORD 437

{p. iv}

LIST OF ILLUSTRATIONS.


GEOGRAPHICAL DISTRIBUTION OF THE DRIFT Frontispiece.

TILL OVERLAID WITH BOWLDER-CLAY 5

SCRATCHED STONE, FROM THE TILL 6

RIVER ISSUING FROM A SWISS GLACIER 19

TERMINAL MORAINE 20

GLACIER-FURROWS AND SCRATCHES AT STONY POINT, 26
LAKE ERIE

DRIFT-DEPOSITS IN THE TROPICS 38

STRATIFIED BEDS IN TILL, LEITHEN WATER, 54
PEEBLESSHIRE, SCOTLAND