Lawson, A. C., cited, [92], [260], [351].
Leads, in pack ice, [286].
Le Conte, Joseph, cited, [6].
Leffingwell crater, California, [104].
Levees, [166].
Leverett, Frank, cited, [6], [104], [166], [312], [318], [321], [330], [332], [333], [334], [337], [339], [344], [345].
Lewiston escarpment, at Niagara, shaping of, [360-362].
Libbey, W., cited, [274].
Life histories, of rivers, [158].