Laplacian, of the universe, [20].

Icebergs, [296];

Antarctic, [292], [293];

Antarctic, formation of, [292];

blue, [292];

manner of formation of, [291], [292];

northern, [291].

Ice caps, profiles of, [267], [268];

sculpture, [380].

Ice-dammed lakes, [321], [323], [410], [411];