160 



MAGIC SQUARES 



[CH. VII 



of 7 blank squares and so that the sum of the pips in each row, 

 column, and diagonal of the square is equal to 24. A solution* 

 is given below. 



Figure xxvii. Magic Domino Square. 



If we select certain dominoes out of the set and reject the 

 others we can use them to make various magic puzzles. As 

 instance, I give in figure xxviii two examples of magic squares of 

 this kind due respectively to Escott and Dudeney. 



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Figure xxviii. Magic Domino Squares. 



Magic Coin Squares. There are somewhat similar questions 

 concerned with coins or postage stamps. Here is one applicable 



* See L' Illustration, July 10, 1897. 



