Falls of St. Anthony, 86.
Fishes, lowest among common vertebrates, 46; trunk-fish, cow-fish, puff-fish, mouse-fish, flounder, 46; most primitive backboned animals, 92; 94; 157; embryos of, 171.
Fiske, 139.
Flies, may, 259.
Flounder, a variant of the fish theme, 66.
Fossilization, conditions of, 77-78.
Fossils, 73-105; remains of, 73; groups, 77; 78, 79; order of succession, 91; oldest rocks devoid of, 92; forms, 99.
Fowl, game cock, 138;
pigeons, 138.
Frog, 45;
eggs of, larva, development of, 58, 59, 60, 68.
Galapagos Islands, 102, 103, 104.