borrows from underlying tissues, [45], [47] f.

Sleep, instinctive origin of, [335] f.;

walking and talking in, [336], [340].

Smell, sensations of, [48] ff.;

blends of, with taste and touch, [48];

blends of odorous qualities, [49];

disused but not degenerate, [50] f.;

arithmetic by, [51];

adaptation to, [51], [63];

contrast of, [63];