PICTORIAL REPRESENTATION OF STRATA OF THE EARTH'S CRUST,
WITH SUGGESTIONS OF CHARACTERISTIC FOSSILS (_Coloured
Illustration_) 92
FOSSIL OF A PTERODACTYL OR EXTINCT FLYING DRAGON 94
Photo: British Museum (Natural History).
PARIASAURUS: AN EXTINCT VEGETARIAN TRIASSIC REPTILE 94
From Knipe's _Nebula to Man_.
TRICERATOPS: A HUGE EXTINCT REPTILE 95
From Knipe's _Nebula to Man_.
THE DUCKMOLE OR DUCK-BILLED PLATYPUS OF AUSTRALIA 95
Photo: _Daily Mail_.
SKELETON OF AN EXTINCT FLIGHTLESS TOOTHED BIRD, HESPERORNIS 100
After Marsh.
SIX STAGES IN THE EVOLUTION OF THE HORSE, SHOWING GRADUAL
INCREASE IN SIZE 101
After Lull and Matthew.
DIAGRAM SHOWING SEVEN STAGES IN THE EVOLUTION OF THE
FORE-LIMBS AND HIND-LIMBS OF THE ANCESTORS OF THE MODERN
HORSE, BEGINNING WITH THE EARLIEST KNOWN PREDECESSORS OF
THE HORSE AND CULMINATING WITH THE HORSE OF TO-DAY 104
After Marsh and Lull.
WHAT IS MEANT BY HOMOLOGY? ESSENTIAL SIMILARITY OF
ARCHITECTURE, THOUGH THE APPEARANCES MAY BE VERY
DIFFERENT 105