Fig. 19.

There were now thirty-six boys sleeping in the dormitories, and next night they were joined by four more, which brought the number up to forty, and yet the master 65 only counted twelve in each dormitory on his rounds that night. How the new distribution was made is shown in [Fig. 20].

Fig. 20.

Next night four more chums popped in for a snooze, making a total of forty-four, and again the master was bamboozled by the following readjustment ([Fig. 21]).

Fig. 21.

History is silent upon the subject of the arrangement at the breakfast-tables.

The proper way to present this puzzle to your friends is to lay forty-four matches on the table, and after showing the initial arrangement, allow them to work the rest out for themselves.