5389. There are troops of spirits who wander about, and by turns come back to the same places. Evil spirits greatly fear them, for they torment them with a certain kind of torture. I was informed that they correspond to the fundus or upper part of the bladder in general, and to the muscular ligaments converging therefrom toward the sphincter, where the urine is driven out by a kind of contortion. These spirits apply themselves to the part of the back where is the cauda equina. Their mode of operating is by quick movements to and fro which no one can stop. It is a method of constriction and restriction directed upward, and pointed in the form of a cone. The evil spirits who are thrown within this cone, especially at the upper part, are miserably tormented by being twisted to and fro.