Moors, astronomy of, ii, 11, 38; in Mediterranean group, xvi, 49; medical influence of, x, 37-8; science of, xvi, 100, 106 Moose, xii, 318-19; antlers of, 316 Moraines, iii, 67-8, 380, xiv, 59; lakes formed by, iii, 144-6, xiv, 202 Morality, beginnings of, xv, 356; civilization and, xvi, 43-4, 45, 47-8; primitive, limited to tribes, xv, 374; religion and, 355-7; varying conceptions of, 285-6 Morgagni Giovanni, x, 97-8 Moriceau, François, x, 79, 80 Morning Glories, climbing stems, xiii, 27; roots, 18; tendrils, 111 Moro, Lazzaro, xvi, 126 Morphine, xiii, 253; an alkaloid, viii, 240; use of, in pain, x, 381 Morro Velho, mine shaft, v, 259-60 Morse, S. F. B., telegraph inventor, vi, 24, vii, 108, xvi, 188 Morse Systems, vii, 108, 109-11 Mortar, lime in, viii, 150 Mortar and Pestle, xv, 238 Mortars (military), v, 368 Mortmain, meaning, xi, 44 Morton, William, ether introduction, x, 124-5, xvi, 185 Mosaic Laws, medical importance of, x, 15 Mosasaurs, iii, 288, xii, 203 Moselle River, xiv, 89, 90, 165 Mosenthal's Test, x, 379 Mosquitoes, campaign against, x, 299-301; in fly family, xii, 120; kinds of, x, 156; malaria spread by, 154, 156-9, 299-301; singing of, cause, xii, 103; yellow fever and, x, 160, 161-2, 173 Moss Animals, xii, 46-7 Mosses, alternation of generations, xvi, 166; character and kinds, xiii, 68-70; reproductive process, 160-3 Mosso, Prof., experiment of, xi, 285; on mountain sickness, i, 328 "Mother Carey's Chickens", xii, 252 Mother-Family, xv, 295 Mother-of-Pearl, xii, 63; iridescence of, 245 Mother Shipton, iv, 104 Mothers, rule of, under polyandry, xv, 294-5; transmission of hereditary traits, ix, 340-1; transmission of nervous influences, 343-4 Mother's Milk, infants' digestion of, ix, 346 Moths, xii, 114-16, 118-20; appearance in Tertiary, 104; evolution of, 107; in flower fertilization, xiii, 142-3; number of species in New York, xii, 99; Pronuba, adaptation in, xvi, 152-3 Motion, as sign of life, ix, 9-11, 14; bodily, different kinds of, 82-3; of animals, means of, 73-4; sense of, ix, 90, xi, 123-8 (see also Movement) Motion (mechanics), energy of (see Kinetic Energy); force in relation to, iv, 56-69, 71-2, v, 182-3; forms of, iv, 85-6; Galileo's investigations, iv, 19; laws of (see Newton's Laws of Motion); quantity of, iv, 62; rapid, not explained by Newton's theory, ii, 80, 81; relativity of, iv, 16-17, xvi, 85; science of, iv, 25; time and, Newton on, 15; uniform and difform, ii, 80; Zeno's theories, xvi, 84-5 Motor Cycles, cooling of cylinders, v, 160; gyroscopic action, 343; generators in, vi, 215-16 Motor-Generator Sets, vi, 332-3, 342-3; efficiency in electric furnaces, vii, 306 Motor-mindedness, xi, 222