If it be caused by 564 varicose veins, the veins are hard and long, as though they were crooked rods, like those seen in the calves of beggars who carry great burdens. If it be from that part of the peritoneum called zirbus, though the sufferer lie supine the matter is not returned.565 If it be the true form it returns easily if he lie supine. If it be the sinews, by which the semen is propelled that are relaxed, because the holes in them are large and loose, it is easy for the viscera to fall into the scrotum, and the name of these sinews is didimi. If it come from the humours, the body is full of evil humours, without pain, and if the matter be grasped, it so to speak comes with you i.e. yields to the touch, and there is an intermediate softness566 between the variety caused by fleshiness, and that caused by wateriness.