The casual reader, on seeing these lines, might be forgiven for the thought that Lord Byron had the crossword puzzle in mind when he wrote them. In an uncertain world nothing is more certain than that this was not the case. Byron died in 1824. The crossword puzzle was born, at least in its popular modern shape, almost precisely a century later. Its history begins suddenly. Neither in the Concise Oxford Dictionary of 1921, nor in the twelfth edition of Encyclopaedia Britannica, dated 1922, does the crossword appear at all. But from the year 1923 references to it become increasingly frequent. In 1924 a popular work entitled The Crossword Puzzle Book was published. In 1925 there was a reference to crosswords in Punch. In 1926 the thirteenth edition of Encyclopaedia Britannica had a short article on it. In 1928 the crossword puzzle was mentioned in Galsworthy's Swan Song. From that time every good standard dictionary or work of reference has included it. These facts document its emergence as a literary phenomenon in Great Britain. The history of the crossword in the United States is very similar, except that it would appear to have achieved stardom in the popular firmament a few months earlier in that country than in this.