class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">59; Koch's Hydrarchus, 61; bones collected by Mr. Schuchert,63; abundance of sharks,64; the great Carcharodon,65; arrangement of sharks' teeth,67; references,68.

V. BIRDS OF OLD

Earliest birds,70; wings,71; study of young animals,73; the curious Hoactzin,74; first intimation of birds,76; Archæopteryx, 77; birds with teeth,78; cretaceous birds,79; Hesperornis, 80; loss of power of flight,81; covering of Hesperornis, 82; attitude of Hesperornis,83; curious position of legs,84; toothed birds disappointing,85; early development of birds,86; eggs of early birds,87; references,88.

VI. THE DINOSAURS

Discovery of Dinosaur remains,90; nearest relatives of Dinosaurs, 91; relation of birds to reptiles,92; brain of Dinosaurs, 93; parallel between Dinosaurs and Marsupials,95; the great Brontosaurus,96; food of Dinosaurs,97; habits of Diplodocus,99; the strange Australian Moloch,100; combats of Triceratops,101; skeleton of Triceratops,102; Thespesius and his kin,104; the carnivorous Ceratosaurus,106; Stegosaurus, the plated lizard,106; preferences,109.

VII. READING THE RIDDLES OF THE ROCKS

Fossils regarded as sports of nature,111; qualifications of a successful collector,112; chances of collecting,114; excavation of fossils,115; strengthening fossils for shipment,117; great size of some specimens,118; the preparation of fossils, 119; mistakes of anatomists,120; reconstruction of Triceratops,121; distinguishing characters of bones,122; the skeleton a problem in mechanics,124; clothing the bones with flesh,127; the covering of animals,