in the present state of the evidences, there is no solid ground on which to rest the foot of conjecture in taking either the one step or the other. In the mean time, many practitioners are playing with an agency, the dangerous character of which they little suspect. In ancient exorcisms, it sometimes happened that the exorcist himself became the involuntary recipient of the contagious frenzy of the patient. If such an event happened now, it would not be more wonderful than when it befel the Pere Surin, at Loudon, in 1635, as he has himself described his disaster in his letter to the Jesuit Attichi: "For three months and a half I have never been without a devil in full exercise within me. While I was engaged in the performance of my ministry, the devil passed out of the body of the possessed, and coming into mine, assaulted me and cast me down, shook me, and traversed me to and fro, for several hours. I cannot tell you what passed within me during that time, and how that spirit united itself with mine, leaving no liberty either of sensation or of thought, but acting in me like another self, or as if I possessed two souls; these two souls making, as it were, a battle ground of my body. When I sought, at the instigation of the one, to make the sign of the cross on my mouth, the other suddenly would turn round my hand and seize the fingers with my teeth, making me bite myself with rage. When I sought to speak, the word would be taken out of my mouth; at mass I would be stopped short; at table I could not carry the food to my mouth; at confession I forgot my sins; in fine, I felt the devil go and come within me as if he used me for his daily dwelling-house."