Place a number of ties side by side, and with a ruler and pencil draw
two lines across them, three and a half inches apart, having about
three quarters of an inch beyond the lines at each end. These marks are
to guide you in laying the track straight. When you have thus prepared
a number of ties and rails, fasten them together by nailing, with
small-sized carpet tacks, through each punched hole, on to a tie, being
careful that the _end_ of each rail reaches no more than half over its
tie, so that the next rail may join on right (_fig. 2_). The tacked
edges of the two rails turn towards each other on the inside of the
track, and thus do not show when a train is on, and the angle _c_ rests
exactly on the line drawn on the tie. Go on in this way till your
rails are all used, or you come to a curve.