(VIII) Laughter primarily the expression of joy Ludicrous ideas Movements of the features during laughter Nature of the sound produced The secretion of tears during loud laughter Gradation from loud laughter to gentle smiling High spirits The expression of love Tender feelings Devotion.
(IX) The act of frowning Reflection with an effort or with the perception of something difficult or disagreeable Abstracted meditation Ill-temper Moroseness Obstinacy Sulkiness and pouting Decision or determination The firm closure of the mouth.
(X) Hatred Rage, effects of, on the system Uncovering of the teeth Rage in the insane Anger and indignation As expressed by the various races of man Sneering and defiance The uncovering of the canine tooth on one side of the face.
(XI) Contempt, scorn and disdain, variously expressed Derisive smile Gestures expressive of contempt Disgust Guilt, deceit, pride, &c. Helplessness or impotence Patience Obstinacy Shrugging the shoulders common to most of the races of man Signs of affirmation and negation.
(XII) Surprise, astonishment Elevation of the eyebrows Opening the mouth Protrusion of the lips Gestures accompanying surprise Admiration Fear Terror Erection of the hair Contraction of the platysma muscle68 Dilatation of the pupils Horror.
(XIII) Nature of a blush Inheritance The parts of the body most affected Blushing in the various races of man Accompanying gestures Confusion of mind Causes of blushing Self-attention, the fundamental element Shyness Shame, from broken moral laws and conventional rules Modesty.
In the text, Darwin mentions an even greater variety of mental and bodily traits. In the lists for chapters IV and XI, he included the sign &c.â to indicate that in his mind, the emotional domain includes a greater number of traits.