Precipitation, Bernal, Merrill Evaporation from free water surfaces, Harding, Sydney Snow and snow surveying; ice, Church, James E Glaciers, Matthes, François E Lakes, Harding, Sidney Infiltration Transpiration and total evaporation, Lee, Charles H Soil moisture Runoff Droughts, Hoyt, William G Physical changes produced by the water of the earth Hydrology of limestone terranes, Swinnerton, Allyn C Hydrology of lava-rock terranes, Stearns, Harold T