23 APRIL 1921, Page 16

A BRAIN WAVE.

CTo THE EDITOR OF THE " SPECTATOR.") SIR,—The following brain wave may interest your 'readers, recalled to my remembrance when lately reading the account in Harries's History of England of the assassination of the Duke of Buckingham in the reign of Charles I. by Felton. I recall distinctly my father saying to us at dinner that a friend had come into his room (in the War Office) and, after some conversation, told bins he wished he would come and dine with him as he had a paper he very much wished to show him, adding, " You will never guess what it is." My father instantly replied, " The paper which fell out of Felton's hat." And it was so. I need hardly add my father had no clue to his friend's