2 
THE YOUNG SCIENTIST. 
keel. The sides, r p and h n, are each I2 
inches thick, 4 inches high, and about 11 
feet long. They are nailed to the stern at 
N and p, and to the top of the lower cross 
piece at h and r. The distances t f and 
T H, being each 3 feet. The top cross 
piece, H F, is la inches thick, 10 inches wide 
and 6 feet long. It is nailed to the keel 
at T, and to the side pieces at h and f. 
The mortice, t, to hold the foot of the 
mast, is made through the top cross piece 
the voyagers, and the floor should be se- 
curely fastened, else they may at some 
inopportune moment be let unexpectedly 
down into the ice. 
The runners, k it, are each 3 feet long, 
2 inches thick, and 7 inches high ; they 
are fastened firmly to the ends of the 
lower cross piece at e and d, and parallel 
with the keel as shown in Fig. 1. The 
cross piece being at right angles with the 
keel, w is a corner block, which is 
P ^ A ^ 
SIDE VI EW 
down into the keel, care being taken not 
to weaken the keel by cutting out too 
much wood. 
The piece e s is Is inches thick, and 4 
inches deep. It is fitted and fastened be- 
tween the keel and sides about 6 feet from 
the stern. The space included within r s 
N p, is boarded on the under side of the 
keel and sides with i inch match boards, 
fastened with II inch screws. This is the 
portion of the boat which is occupied by 
screwed firmly to the runner and the 
underside of the cross piece. 
The bottom edge and forward end of 
the runner is grooved, as shown at r sv, 
Fig. 2, to hold the iron skate in place. 
The skate is made of I inch square iron, 
set cornerwise in the groove, as shown at 
/ r s V. It is bent up in the shape of a 
skate or sleigh runner, to fit the forward 
end of the runner, and is fastened with 
two 21 inch screws, as shown at d d. The 
