Manners, genesis of, [77];
decline of the influence of, [89];
conformity in manners leads to extravagance, [99];
conformity in, decreases social intercourse, [100];
defeats the true end of social life, [102], [107].
Muscular movements, cause of, [195];
arrested by feeling, [199];
in laughter purposeless, [201];
of animals when excited, [211];
variations of, produce changes of voice, [214].
Music, increasing heterogeneity of, [26];
relation of mental to muscular excitement, the source of, [214];
theory of, [221]-[224];
its history confirms the theory, [224]-[228];
negative proof of theory of, [228]-[231].