Make a target of brown wrapping-paper, and put the number 100 on the
bull’s eye. Outside of this mark five rings, making the largest one
two feet in diameter, the others proportionately smaller. Inside of
these rings put the numbers 10, 20, 30, 40, 50, the centre as stated
being 100. Mark out a space on the ground for a base five feet away;
place the target on the ground, blindfold a player, lead him to the
base, and turn him around twice, and leave him facing the target. He
is now entitled to roll three marbles, and then remove the blindfold.
His count will be the added numbers in the rings at which his marbles
have stopped. Should any of them stop on a line, he is entitled to the
largest number adjoining. No marbles must be moved, and each boy has
the privilege of trying the ground once with each marble, before being
blindfolded.