It is one of the signs of mental degeneration as far as love is concerned.
When this Line is pale and broad, without any depth, it denotes a nature _blase_ and indifferent with no depth of affection.
When very low down on the hand, almost touching the Line of Head, the heart will always interfere with the affairs of the head.
When it lies very high on the hand and the space is narrowed only by the Head Line being abnormally high and out of its place, it indicates the reverse of the above, and that the affairs of the heart are ruled by the head.

Such persons are extremely calculating in all matters of love.
When only one deep, straight line is found across the hand from side to side, the two lines both Head and Heart appear to blend together.

This denotes an intensely self-concentrated nature.

If such a subject loves, he unites with it all the forces of his mind, and if he put his mind on any subject, he throws his whole heart and soul into whatever it may be (Plate VI.).
These people are also terribly head-strong and self-willed in all they do.

They do not seem to know what fear means in any sense--they are dangerous lovers and husbands to trifle with, for they will stop at nothing if their blood is once roused.
They are also dangerous to themselves.