CHAP. XIII. BLUSHINa. 327 blinking eyes, as on an inanimate object, in a manner which we elders cannot imitate. It is plain to every one that young men and women are highly sensitive to the opinion of each other with reference to their personal appearance; and they blush incomparably more in the presence of the opposite sex than in that of their own.25 A young man, not very liable to blush, will blush intensely at any slight ridicule of his appearance from a girl whose judgment on any important subject he would disregard. N"o happy pair of young lovers, valuing each other's admiration and love more than anything else in the world, probably ever courted each other without many a blush. Even the barbarians of Tierra del Fuego, according to Mr. Bridges, blush " chiefly in regard to women, but certainly also at their own personal appearance." Of all parts of the body, the face is most considered and regarded, as is natural from its being the chief seat of expression and the source of the voice. It is also the chief seat of beauty and of ugliness, and throughout the world is the most ornamented.20 The face, there- fore, will have been subjected during many generations to much closer and more earnest self-attention than any other part of the body; and in accordance with the prin- ciple here advanced we can understand why it should be the most liable to blush. Although exposure to alter- nations of temperature, &c., has. probably much in- creased the power of dilatation and contraction in the capillaries of the face and adjoining parts, yet this by 20 Mr. Bain (' The Emotions and the Will,' 1805, p. 65) remarks on " the shyness of manners which is induced be- tween the sexes .... from the influence of mntxial re- gard, by the apprehension on either side of not standing well with the other." 20 See, for evidence on this subject, ' The Descent of Man,' &c.> vol. ii. pp. 71, 341.