Constipation, causes and treatment, ix, 250-2; chronic, x, 316-17, 328-9; hyperacidity caused by, 322 Contact Catalysis, viii, 82-3, 103, 316 Contact Senses, ix, 86, 91-5; connections with brain, 142 Contempt, sentiment of, xi, 148 Continental Climates, i, 208, 370, xiv, 346, 347 Continental Islands, xiv, 271-6, 278-81 Continental Platforms, major relief features, xiv, 9, 27; margins and slopes, 25, 287-8 Continental Rivers, xiv, 153 Continental Shelves, iii, 52, xiv, 287; area covered by, iii, 52, xiv, 26; breadth of, 25, 285; cutting of, by waves, iii, 55-6, xiv, 46-7; deposits on, iii, 53, xiv, 284-5 Continental Slope, xiv, 287-8; deposits on, iii, 53 Continents, average elevation of, xiv, 26-7; climate on opposite sides, 346; distinction from islands, 23; drainage systems, 190; former connections, xiii, 320, xiv, 290; former submergence, iii, 216, xiv, 19-20; present, never covered by deep sea, iii, 55; rate of wearing away, xiv, 41; tides modified by, 292 Continuity, of action, xi, 264-5; of training, 257 Contrast, association by, xi, 197; attention aroused by, 344; effect on tastes, 72; illusions of, 189 Convection, iv, 139, 178-9, 185 Converters, electrical, vi, 162, 332-48, vii, 365; speed-limiting devices, 48; in traction systems, 199, 365 Convolutions of Brain, xv, 62, 63, xi, 29 Convulsions, production of, ix, 133-4 Cook, Capt. James, xvi, 123; story of Polynesian, xv, 124 Cooke, Dr. R. P., x, 161 Cooking, chemistry of, viii, 367-9; development of art of, xv, 13, 195, 232-3; effect on vitamines, ix, 36, x, 263, 266; frying habit, ix, 286; good, advantages to digestion, 241-2; "pressure cookers," iv, 171; use and advantages, xv, 229 Cooking (electric), vii, 89; special rates for, 174; in U. S. Navy, 332-3 Cooking Utensils, aluminum, viii, 155; copper, 164 Coolidge Tube, x, 185 Cooling, contraction by, iv, 134-5, viii, 107-8; dynamic, i, 90 (see also Expansion, cooling by); use of water in, viii, 37; water changes in, iv, 149, 150-1, viii, 38 (see also Refrigeration) Coon Bear, xii, 338 Cooper, Astley, x, 129-30 Coordinates, iv, 16 Copal, in varnishes, viii, 265 Copepods, xii, 18, 84 Copernican Theory, ii, 43-4; aided by Pythagorean teachings, xvi, 82; establishment of, iv, 95; Galileo and, ii, 54, 56; Kepler, and, 49; not accepted at once, 45, 46, 60, 311 Copernicus, ii, 42-4, iv, 19, xvi, 102; as astrologer, ii, 21; "De Revolutionibus," 12, 43; ideas of motion, 63; on speed and orbits of planets, 49; studies in Italy, 12