This is a peculiar thing, and the boy builder of the cigar-box train
insists that it must be done exactly as he directs, in order to make a
really _proper_ cab. To proceed, then:
For the front piece take a board a half-inch thick, three and three
quarters inches high, and two and a half wide. Cut with a jig saw, near
the top, two windows, one on each side, to overlook the engine. Nail
this to the back end of the boiler, and to the floor. Make the two side
pieces of the cab of cigar-box wood three inches wide and four inches
high. In these cut two windows, also near the top. Before you nail
these side pieces on, make a third piece out of half-inch wood, two and
a quarter inches long, by two and a half wide, and nail it with brads
to the front piece of the cab, one inch from the floor, like a shelf.
This is the real floor, and without it your cab will be a mere toy, and
not at all the correct thing. Having this shelf in place, nail on your
side pieces, both to the front piece, and to the shelf.
The roof requires a piece of thin board, two and a half inches wide,
and four inches long, so that it will project one inch beyond the
sides. Remember it must be put _between_ the side pieces, and on _top_
of the front piece, and nailed with brads.