_A_ and _B_ are two half logs, or puncheons, which run from the floor to
the ceiling on each side of the fireplace. _S_, _S_, _S_ are the logs of
the cabin walls. _C_ is the puncheon supporting the mantel and _D_ is the
mantel. Fig. 279 shows a section or a view of the mantel looking down on
it from the top, a topographical view of it. Fig. 278 is the same sort of
a view showing the puncheon _A_ at the other end of the mantel before the
mantel is put in place between the two puncheons _A_ and _B_. In Fig. 279
the reader may see that it will be necessary to cut the corners out of the
mantel-board in order to fit it around the puncheons _A_ and _B_; also,
since _A_ and _B_ have rounded surfaces, it will be necessary to so bevel
the ends of the puncheon (_C_, Fig. 277) that they will fit on the rounded
surfaces of _A_ and _B_. Fig. 280 shows the end of _C_ bevelled in a
perspective view, and also a profile view of it, with the puncheon _A_
indicating the manner in which _C_ must be cut to fit upon the rounded
surface. This makes a simple mantelpiece but a very appropriate one for a
log cabin.