same size. It measures 8
inches in circumference, and is covered with felt, black, red, or
white; some have an overspun cover knitted on the ball in green or
white. Cost, $6 per dozen. Enameled rubber squash balls in black or
gray may be had at twenty cents each.

TENNIS BALL.--Tennis balls are of rubber, hollow, and are covered with
white felt. The official specifications call for a ball measuring not
less than 2-1/2 nor more than 2-9/16 inches in diameter, of weight not
less than 1-15/16 nor more than 2 ounces. Tennis balls cost about $4
per dozen.

VOLLEY BALL.--Volley balls are quite similar to basket balls, but
slightly smaller and lighter. They are suitable for games in which the
ball is batted with the open hand or fist and where it is to be kept
continuously in the air, such as the game of Volley Ball. The ball
consists of a rubber bladder inclosed in a laced leather cover of
white. The official specifications call for a ball not less than 25
nor more than 27 inches in circumference, of weight not less than 9
ounces nor more than 12 ounces. Volley balls cost from $2.50 to $4
each.

MARKING GROUNDS

Where boundary lines are important in a game and need to be seen from
a distance, as in many ball games, they should be plainly marked. On a
gymnasium floor black paint for permanent diagrams is the best. For
out of doors white linen tape may be had, with wooden staples and pins
for fastening to the ground, costing from $3.50 to $6 per set for a
court the size of a tennis diagram. A liquid mark may be made of
whitewash, and a dry mark by mixing two parts of sand with one of
whiting. Marble dust or slaked lime also make good dry marks. Roller
markers for placing either wet or dry marks in lines of even width may
be had at from $1 to $5 each.

BEAN BAG AND OAT SACK GAMES

BAG PILE

_10 to 100 players._

_Gymnasium; playground; schoolroom._

_Bean bags; oat sacks._

The players are divided into two or more equal parties which line up
in ranks. Near the front end of each rank is a pile of from ten to
fifteen bean bags or oat sacks, which are to be passed down the line.
At a signal the first player in each rank takes a bag and passes it
down the line, sending the others in succession as rapidly as
possible. The last player in the line when he receives the bean bag
lays it on the floor in front of him; and as each bean bag reaches
him, he piles it on the first one, making a stack. Only the first