An experiment in treating neurotic patients was tried in te Massillon State Hospital, Ohio, when a picture entitled, "Christ Knocking at the Door, " a copy of Hofmann's masterpiece, was unveiled during the religious services. The painting was life-size, on cathedral glass, and illuminated by electric lights. The hope was that by flashing the lights suddenly on the picture a beneficial theraputic effect would be produced on the minds of the inmates of the hospital.