tand three large-sized spools together, forming a triangle, with one
point turned to face the opposite pier. This group of three spools is
the foundation of one of the two columns, which together form one pier
of the bridge.

About two inches distant and on a line with the triangle of spools stand
a group of three more spools, and build up each group into a column four
spools high. You will need two more columns for the opposite pier of the
bridge; build them as you did the first, and place the second pier
exactly opposite to and as far from the first as you desire the span
should reach--say about fourteen inches.

Lay a strip of pasteboard six inches wide across from pier to pier,
allowing the ends to rest on the piers, but not extend beyond the
outside end edges of the piers; then if your span is fourteen, inches
long, cut from a pasteboard box two more strips fourteen inches long and
of the same width as the span; score each strip across one end, one inch
from the edge, bend slightly and fit the bent edge of each strip on one
end of the bridge, allowing the other end of the strip to extend away
from the pier and rest on the floor, forming an inclined approach to the
bridge proper as in Fig. 77.

[Illustration: FIG. 77--The spool bridge.]

When your pasteboard strips are well settled in place, continue building
up the piers on top of the pasteboard, making each group of three spools
two layers high; then build up one spool two layers high on top of the
four columns.

[Illustration: FIG. 78--Span the two columns with this.]

Complete the archway by spanning the two columns of each pier with a
narrow strip of stiff white paper bent up into a point at the centre and
out into a flap at each end (Fig. 78). The flaps rest on top of the
spools. The photograph shows how the entire bridge should look, and in
the photograph you will find a little lady hurrying across the bridge on
her way home, and following in her wake Mr. Clothespin and Mrs.
Clothespin. A paper boat under the bridge would make the scene more
realistic.

Next build

=A Memorial Arch=

(Fig. 79), something like the one which was erected in New York City.
Commence with two groups of spools a short distance apart; have three in
each group, two in the back and one in the front. Build up columns four
spools high; then lay a strip of pasteboard across from one to the
other. On top of the pasteboard place two more groups of smaller spools
a little neare