he is to stand on a
certain line, he must "heel it" if with his back toward them,
or, if his side be toward them, stand with one foot on either
side of the line.

The jumper.--The player who leaps must lay his hands flat on
the back at the shoulders and not "knuckle," _i.e._ double
under his fingers. Any player transgressing this rule must
change places with the back. The back must be cleared without
touching him with the foot or any part of the body except the
hands. Such a touch is called "spurring," and the transgressor
must change places with the back if the latter stands upright
before the next player can jump over him. If he does not stand
upright in time, he remains back. When a leap is made from a
starting line or taw, the jumper may not put his foot more than
half over the line. Good jumpers will land on the toes with
knees bent and backs upright, not losing the balance.

The leapfrog games here given in alphabetic order include:--

I. WITH ONE BACK: II. WITH TWO OR MORE BACKS:

Leader and Footer Bung the Bucket
Leapfrog Johnny Ride a Pony
Leapfrog Race Cavalry Drill
Par Saddle the Nag
Spanish Fly Skin the Goat

LEAPFROG

_2 to 100 players._

_Playground; gymnasium._

The first player makes a back, standing either with his back or his
side toward the one who is to leap over. The next player runs, leaps
over the back, runs a few steps forward so as to allow space for a run
between himself and the first player, and in his turn stoops over and
makes a back. This makes two backs. The third player leaps over the
first back, runs and leaps over the second, runs a short distance and
makes a third back, etc., until all the players are making backs, when
the first one down takes his turn at leaping, and so on indefinitely.

VARIATION.--This may be made much more difficult by each player
moving only a few feet in advance of the back over which he has
leaped, as this will then leave no room for a run between the backs,
but means a continuous succession of leaps by the succeeding players.

LEAPFROG RACE

_10 to 100 players._

_Playground; gymnasium._

The players are lined up in two or more single files, as for the
simplest form of leapfrog, but the game is a race between the
diff