foot-rests 22 in. long, 3 in. wide and 3/4 in. thick. Fasten them
on the under side of the baseboard at right angles to its length
and 16 in. apart, beginning at the rear. At the front 24 or 26 in.
will be left without cross bars for fitting on the auto front. On
the upper side of the cross bars at their ends on each side screw
a piece of oak 1 in. square by 14 ft. long. On the upper side of
the baseboard at its edge on each side screw an oak strip 3 in.
wide by 3/4 in. thick and the length of the sled from the back to
the auto front. These are to keep the cushion from falling out.
See Fig. 1. For the back of the sled use the upper part of a
child's high chair, taking out the spindles and resetting them in
the rear end of the baseboard. Cover up the outside of the
spindles with a piece of galvanized iron.

The construction of the runners is shown by Figs. 2 and 3. The
stock required for them is oak, two pieces 30 in. by 5 in. by
1-1/4 in., two pieces 34 in. by 5 in. by 1-1/4 in., two pieces 14
in. by 6 in. by 2 in., and four pieces 14 in. by 2 in. by 1 in.
They should be put together with large screws about 3 in. long.
Use no nails, as they are not substantial enough. In proportioning
them the points A, B and C, Fig. 2, are important. For the front
runners these measurements are: A, 30 in.; B, 4 in.; C, 15-1/2
in., and for the rear runners: A, 34 in.; B, 7 in. ; C, 16-1/2 in.
The screw eyes indicated must be placed in a straight line and the
holes for them carefully centered. A variation of 1/16 in. one way
or another would cause a great deal of trouble. For the steel
runners use 3/8 in. cold-rolled steel flattened at the ends for
screw holes. Use no screws on the running surface, however, as
they "snatch" the ice.