INDEX 



173 



I jflhrador, observations in, 44 

 Lagoons inside coral reefs, 11 



depths of, 68 



flatness of floors of, 67 



testimony regarding strength of the 



earth's crust, 67 ff 

 Lake Constance. See Constance, Lake 

 Lake Geneva. See Geneva, Lake 

 Lake Lee, 147 



Lake Mead. See Mead, Lake 

 Lake Murray, 147 

 Landsliding, in volcanic islands, 53 

 Lava 



cause of ascent from depth, 51 



cascade, 56 



fountains, 56 



lakes, 56 



liquidity of, 50, 58, 60 



origin of, 56 ff, 60 



temperature of, 56 

 Leet, L. D., 15 

 Level, changes of 



shown by water-gage, 38 



shown by the spirit-level, 39 

 Lindenkohl, A., on the Hudson Canyon, 



128 

 Lizard, The, continental terrace off, no 

 Long Island, New York, furrowed slope 



off, 116, 133 

 Loo Choo mountain-arc, 91 

 Louisiade archipelago, 68 

 Louisiana, continental terrace off, in 

 Love, A. E. H., 16 

 Love seismic waves 



defined, 16 



velocities of, 19, 21 

 Loyalty Islands, 66 



JVlacclesfield Bank, test of prolonged 



crustal stability, 67 

 Macelwane, J. B., 165 

 McLaughlin, D. H. See Figure 71 

 Madeira Island, test of crustal strength, 



63 

 Maldive archipelago, 50 

 Mangaia Island, test of prolonged crustal 



stability, 66 

 Mango Island, test of prolonged crustal 



stability, 66 



Marine currents 



affecting symmetry of deltas, 102 



in Gulf of Mexico, 102 



in the Mediterranean Sea, 103 

 Marmora Sea, double density-current in, 



142 

 Marshall Islands, 66 



Massachusetts, continental shelf off, 100 

 Matterhorn, 92 

 Mauna Loa, lava lake of, 61 

 Mead, Lake 



density currents in, 144 ff 



gradient of floor of, 146 



velocity of density currents in, 146 

 Mediterranean sea-basins, origin of, 4 

 Michaelmas Cay, bore-hole at, 66 

 Mid-Atlantic Swell, 9, 23 

 Miladummadulu Bank, test of prolonged 



crustal stability, 72 

 Mille (Mulgrave) atoll, test of prolonged 



crustal stability, 67 

 Miller, A. H., on gravity in southern 



Canada, 44, 165 

 Milligal, defined, 30, 64 

 Mindanao Island, 7 



Miocene sediments in canyon walls, 128 

 Mississippi Delta, asymmetry of, 101 

 Mississippi River 



deflection of, ioi 



trenching its own alluvium, 130 

 "Mixed" paths of Surface earthquake 



waves, 21, 22 

 Montreux, Switzerland, 142 

 Morris, F. K., 88 

 Mount Etna, lava column of, 61 

 Mount Everest, cause of height of, 93 

 Mountain chains 



arcuate ground-plans of, 88, 91, 95, 



97 



delayed uplift of, 89, 93 



folding of bedded rocks in, 88 



origin of, 3, 47, 86 



overthrusts in, 87, 89 



peridotite in roots of, 95 



structure of, 86 



submarine, 5, 48 ff, 79 

 Mountain structures of the sea floor, 48 ff 

 Mud-suspensions affecting density of sea 



water, 112, 136, 147 

 Murilo atoll, map of, 67 

 Murray, H. W., 155 



