Ceratosaurus, his dreadfulness and his name, [23];
and Nature's dream of the coming of man, [23];
one of our queer cousins, [264]
Civilization, its constant advance, but with ups and downs, [269];
the civilization that Mother made, [270]
Coal, did it help bring on the Ice Age? [20];
bad effect of coal making on plant and animal life—volcanoes to the rescue! 226;
coal seams and the records of ancient life, [245]
Colorado River, how it dug the Grand Canyon, [88]
Conglomerate rock, why it is called "pudding stone," [96];
conglomerate boulders as historians, [155];
how made in the sea mills, [227]
Continents, how they rose out of the sea, [8];
how the fact that they are still rising helps the rivers get back to sea, [75];
the continents and Nature's accident insurance, [262]
Copernicus, and the discovery that there are worlds of worlds, [4]
Coral islands and reefs, how the sea helps the corals build them, [225]
Coyotes, as ventriloquists, [179];
their night songs, [179];
how they get a living, [180]
Crater Lake, the blue lake in the volcano's mouth, [194], [195]