THE RELIEF OF PAIN AND OTHER SYMPTOMS BY THE AID OF THE MEMORY
M ANY years ago patients who had been cured of imperfect sight by treatment without glasses quite often told me that after their vision had become perfect they were always relieved of pain, not only in the eyes and head, but in other parts of the body, even when the pain was apparently caused by some or ganic disease, or by an injury. The relief in many cases was so striking that I investigated some thousands of cases and found it to be a fact that persons with perfect sight, or the memory of perfect sight-that is, of some thing perfectly seen-do not suffer pain in any part of the body, while by a strain or effort to see I have pro duced pain in various parts of the body.
By perfect sight is not meant, necessarily, the perfect visual perception of words, letters, or objects, of a more or less complicated form. To see perfectly the color alone is sufficient, and the easiest color to see perfectly is black. But perfect sight is never continuous, careful scientific tests having shown that it is seldom maintained for more than a few minutes and usually not so long. For practical purposes in the relief of pain, therefore, the memory is more satisfactory than sight.
When black is remembered perfectly a temporary, if not a permanent, relief of pain always results. The skin may be pricked with a sharp instrument without caus ing discomfort. The lobe of the ear may be pinched be-