Brazil, bushmaster snake of, xii, 234; butterfly orchid of, xiii, 145; coasts, xiv, 257; coffee production, xiii, 232, 233; coral reefs on coast, xiv, 305; forests, xiii, 365, xiv, 366; frogs of, xii, 178, 179; glacial and coal deposits, iii, 203, 204; interior unexplored, xiv, 26, 250; jaguarundi of, xii, 364; lizards of, 208; matamata of, 193; public health scholarships, x, 172; rubber production, xiii, 246-7, 248; shirt tree of, xv, 256; soil depths, iii, 26; tea cultivation, xiii, 228; wolf of, vii, 342; yellow fever in, x, 163 Brazilian Basin, xiv, 289 Brazilian Current, xiv, 304 Brazil Nut, source, xiii, 266 Bread, chemistry of, viii, 368-9; digestion of, x, 326; food value of, viii, 364, ix, 34-5, 299, x, 267, 268, 269, 273; rising of, due to bacteria, 194; yeast action in, ix, 248 Breadfruit, origin, xiii, 224 Breadfruit Trees, xv, 124 Breakwaters, pneumatic, v, 125; strength of, xiv, 300, 301 Breath, holding of, ix, 256-7, 266; holding of, in infants, 348; shortness of, in heart failure, x, 340-1; smell of, ix, 97; soul in, savage idea of, xv, 330 Breathing, action and control of, ix, 256-8, 263-6, x, 339; body heat regulation by, 251; color effects on, xi, 96; deep, value of, ix, 259; deep, sensations from, 266-7; how learned, xi, 36-7; in fatigue, 272; in sleep, 283; muscles of, in voice production, ix, 83; of insects, xii, 103; periodic, x, 339-40; quickened by exercise, 303; rate of, in infants, ix, 347-8; rib cage movements in, 65; through mouth, effects, x, 341-2 (see also Respiration) Breeding (animal and plant), blended inheritance and pure breeds, ix, 337; in ancient Egypt, xvi, 72; in captivity, xv, 197; selective, ix, 327, xvi, 157-8 Brennan, Louis, v, 342 Brenner Pass, xiv, 240-1 Bretonneau, Pierre, x, 106, 110 Brewing, chemistry of, viii, 249 Bricks, invention of, xv, 268; making of, in Egypt, 267 (fig.) Bridges, steel, electrolysis in, vi, 64, 66; strains on, v, 194; sympathetic vibration of, iv, 225 Briggs, Henry, xvi, 104 Bright's Disease, x, 112, 225, 335, 340-1, 345, 346 Bristol Channel, tides of, xiv, 293 British Columbia, fjord coasts, xiv, 258; no volcanoes or earthquakes in, 315, 331 British Gum, viii, 243 British Meteorological Office, i, 222; aeronautical service, 230, 286; forecasts, 241; in World War, 310 British System of Units, iv, 46, 69-70, 79, 80 British Thermal Unit, iv, 154, v, 350-1; erg and calorie equivalents, vii, 382 Brittle-stars, xii, 23, 49 Broadway, N. Y., display lighting vii, 340-1 Broca, Paul, x, 130 Brocken Specter, i, 184, 185, 382