Chapter IV

.), definition of, 82; universality of, 83, 295; relativity of, 84, 88, 93, 95, 98, 101, 102, 106, 111, 113; distinguished from the ludicrous, 85; complexity of, 87, 114, 153; groups of laughable objects, 87; inhibitory concomitants of, 90, 93, 96, 101, 111, 301, 306; relation of, to laughter as a whole, 153; field of, 260, 315, 319.

Laughter, estimates of, 1, 416; scientific investigation of, 3 ff., 19, {437} 154; physiological characteristics of, 22, 26–28, 30, 33–36, 69, 227, 309; varieties of, 22, 48, 188, 251; an intermittent manifestation, 26, 74; sounds of, 31, 174, 227; bad effects of, 37, 46, 415, 418, 420, 422; mechanically produced, 42, 64 ff., 74; occasions of, 50 (