Two of our patients graduated at the end of the school term. After the final examinations they told me that they had been greatly helped in their tests by the memory of a swinging black period. One of them was told by the principal that if she failed to pass, it would be because she refused to wear glasses. She gave the principal Dr. Bates' book, which was one of her precious possessions, and after that, though he watched her closely, he did not say anything more about her eyes.

"I made up my mind to pass without the aid of glasses," she said, "and 'put one over* on the principal, but you can bet I never lost sight of my precious swinging period. The book has become a family treasure," she continued. "When one of us has a pain in head or eyes, out of the bookcase comes the book. It Is natural to see mother palming after her house work is done. She enjoys her evenings with her family, because palmIng rests her and she does not get so sleepy before bedtime."

The other graduate said: "I did not have to think of a black period when the test was easy, but when I had to answer questions In the more difficult subjects, I certainly did find the period a life-saver. I know I would have failed without it."