Part 22

Toothed birds, collections of, 88 discovery of, 79

Townsend C. H., 190-192

Tracks, ascribed to birds, 38 ascribed to giants, 45 animals known from, 41 collections of, 47 of Connecticut Valley, 37 deductions from, 44 of Dinosaurs, 38,* 40,* 41, 47* discovery in England and America, 37, 42 how formed, 35, 40 at Hastings, 44

Tracks, of Mylodon, 46 of worms, 3, 33

Triceratops, brain, 94 broken horn, 102 description, 100, 101 restoration, 126* skeleton, 103*

Tufa, 14

Tukeman, killing of the Mammoth, 177, 193

Variation in animals, 228

Vertebrates, oldest, 22

Vestigial structures, 201, 202

Volcanic outbursts, 231, 232

Webster, F. S., on destruction of gar pikes, 26

White, C. A., on the nature and uses of fossils, 17

White Shark, 65

Wings, 71, 72,* 73 of embryonic birds, 73

Wood, fossil, 9, 10

Worm trails, 3, 33

Yucca, fertilization, 235

Zeuglodon, abundance of remains, 60 same as Basilosaurus description, 58, 63 habits, 59

Zeuglodon, Koch's restoration, 62 name, 58, 69 once numerous, 60 size, 58 specimen of, 68 structure of bones, 64 teeth, 58, 69*