+-- --+-- --+-- --+-- --+-- --+--.--+--.--+-- --+
| | | | | | . | . | |
| ............. ....... . ....... |
| . | | . | . | . | . | | . |
+--.--+-- --+--.--+--.--+--.--+--.--+-- --+--.--+
| . | | . | . | . | . | | . |
| ....... ....... ....... ....... |
| | . | | | | | . | |
+-- --+--.--+-- --+-- --+-- --+-- --+--.--+-- --+
| | . | | | | | . | |
| ....... ....... ....... ....... |
| . | | . | . | . | . | | . |
+--.--+-- --+--.--+--.--+--.--+--.--+-- --+--.--+
| . | | . | . | . | . | | . |
| ............. . P ............. |
| | | | | | | | |
+-- --+-- --+-- --+-- --+-- --+-- --+-- --+-- --+

]

A French prisoner, for his sins (or other people's), was confined in an
underground dungeon containing sixty-four cells, all communicating with
open doorways, as shown in our illustration. In order to reduce the
tedium of his restricted life, he set himself various puzzles, and this
is one of them. Starting from the cell in which he is shown, how could
he visit every cell once, and only once, and make as many turnings as
possible? His first attempt is shown by the dotted track. It will be
found that there are as many as fifty-five straight lines in his path,
but after many attempts he improved upon this. Can you get more than
fifty-five? You may end your path in any cell you like. Try the puzzle
with a pencil on chessboard diagrams, or you may regard them as rooks'
moves on a board.

324.--THE LION AND THE MAN.

In a public place in Rome there once stood a prison divided into
sixty-four cells, all open to the sky and all communicating with one
another, as shown in the illustration. The sports that here took place
were watched from a high tower. The favourite game was to place a
Christian in one corner cell and a lion in the diagonally opposite
corner and then leave them with all the inner doors open. The consequent
effect was sometimes most laughable. On one occasion the man was given a
sword. He was no coward, and was as anxious to find the lion as the lion
undoubtedly was to find him.

[Illustration:

+-----+-----+-----+-----+-----+-----+-----+-----+
| | | | | | |