and gluing them to the cabin and engine-room. A good
substitute for the wood can be found in tin, but of course this would
have to be tacked on. The little skylight on the back of the tug is made
by a single block covered by two pieces of cigar-box wood.

In order to stabilize the craft and to bring her down to the proper
water-line, a lead keel must be nailed to the bottom. The weight of this
keel will have to be adjusted until the boat rests properly in the
water. The reader will notice that no dimensions have been given for
this boat. This is because most boys will wish to build different sized
boats, and therefore it has not been deemed advisable to dimension the
boats described in this Chapter. What the author desires to do is to
impart the principles of construction, so that every boy may use his own
ingenuity in regard to size and proportion of length to beam.

If tugs are constructed according to the design outlined above, the
model boat builder will also desire to have something that the tug can
haul. A very simple barge for this purpose is outlined in Figs. 25 and
26. This is formed of a single slab with the ends cut at an angle as
illustrated. A square flat piece is then tacked to the upper deck, which
acts as a cover. Four posts are then put in place in the same way as
those on the tug. One is placed in each corner. A boat or a scow like
this is generally painted red, and the model described can be made to
look much more realistic by painting it this color.

[Illustration: FIG. 25]

[Illustration: FIG. 26]

[Illustration: FIG. 27]

[Illustration: FIG. 28]

These barges are so easy to construct that the model-builder should make
three or four of them at a time. If the pieces for several are cut out
at the same time, the construction will be just that much easier. If the
boat does not sink far enough into the water, a piece of lead should be
placed on the bottom to bring it down. This piece of lead should be
placed as near the center as it is possible to get it. Otherwise the
boat will list or tip at one end or the other. With a little patience
and care the weight can be so adjusted on the bottom as to bring the
scow to a perfectly level position. The reader will understand that the
water-line of a scow or any boat made according to the directions in
this book will depend largely upon the nature of the wood. In the first
Chapter of the book it was pointed out that the specific gravity of
different wood