Great Basin, records of the two great lakes it used to hold, [249]
Great Lakes, how they were made in the Ice Ages, [34];
an Ice Age lake that was greatest of all, [193];
tides in the Great Lakes and tides in a teacup, [201];
how the glaciers of the Ice Age tipped the Great Lakes up, [253]
Great Salt Lake, ancient weather records on its walls, [249]
Greek civilization, one of the things that do not die, [270]
Harbor engineering of the rivers and the sea, [221], [222]
Hieroglyphics, picture language of the Egyptians and how it was read, [258]
Himalaya Mountains, glacial table on, a lesson in picture-reading, [59];
why some of the Himalayas are called "hills," [117]
Horse, evolution of, [266]
Hot Springs (cause of), [165]
Hudson River, action of the tides, [221];
the Palisades, [241]