I AM a medical man specializing in neurology and diseases of the brain. My peculiar field is abnormal psychology, and in it I am recognized as an expert. I am closely connected with two of the foremost hospitals in New York, and have received many honors in this country and abroad. I set this down, 
risking identification, not through egotism but because I desire to show that I was competent to observe, and competent to bring practiced scientific judgment upon, the singular events I am about to relate.