of the insane.[155] Sexual excitement is one among many
causes--intellectual excitement, pain, a loud noise, even any sensory
irritation--which produce dilatation of the pupils and enlargement of the
palpebral fissure, with some protrusion of the eyeball. The influence of
the sexual system upon the eye appears to be far less potent in men than
in women.[156] Sexual desire is, however, by no means the only irritant
within the sexual sphere which may thus influence the eye; morbid
irritations may produce the same effect. Milner Fothergill, in his book on
_Indigestion_, vividly describes the appearance of the eyes sometimes
seen in ovarian disorder: "The glittering flash which glances out from
some female irides is the external indication of ovarian irritation, and
'the ovarian gleam' has features quite its own. The most marked instance
which ever came under my notice was due to irritation in the ovaries,
which had been forced down in front of the uterus and been fixed there by
adhesions. Here there was little sexual proclivity, but the eyes were very
remarkable. They flashed and glittered unceasingly, and at times perfect
lightning bolts shot from them. Usually there is a bright glittering sheen
in them which contrasts with the dead look in the irides of sexual excess
or profuse uterine discharges."

The activity of the glandular secretions, and especially those of the
skin, during detumescence, would lead us to expect that such secretory
activity is an index to an aptitude for detumescence. As a matter of fact
it is occasionally, though not frequently, noted by medical observers. It
is stated that the erotic temperament is characterized by a special
odor.[157] The activity of the sweat-glands is seldom referred to by
medical observers in describing persons of erotic temperament, although
the descriptions of novelists not infrequently contain allusions to this
point, and the literature of an earlier age shows that the tendency to
perspiration, especially the moist hand, was regarded as a sure sign of a
sensual temperament. "The moist-handed Madonna Imperia, a most rare and
divine creature," remarks Lazarillo in Middleton's comedy _Blurt,
Master-Constable_, to quote one of many allusions to this point in the
Elizabethan drama.

The lips are sometimes noted as red and everted, perhaps thick[158];
Tardieu remarked that the typically erotic woman has thick red lips. This
corresponds with the characteristic type of the satyr