THE YOUNG SCIENTIST. 
20 
and^drive into it, near the bottom, a wooden 
faucet, whose spout is covered with a piece 
of muslin or flannel to prevent impurities 
Fig. 3. 
from passing upon the plate. Another ves- 
sel to receive'slops, and a towel to dry the 
hands, will complete the furniture of the 
dark room. 
To he continued. 
Simple Legerdemain. 
rp HE simple piece of apparatus, which is 
shown in the engraving illustrating 
|}hi3 article will enable any one to perform 
Fig. 1. 
a little bit of legerdemain which will sur- 
prise almost any one that is not familiar 
with it. The construction of the apparatus 
itself constitutes a capital exercise for those 
who wish to become expert in the use cf 
the turning lathe, and in succeeding num- 
bers we will give minute directions for mak- 
ing it. Meantime we will give a description 
of its general construction and the method 
of using it. 
Fig. 1 shows the apparatus as ifc appears 
when together. At first sight it would seem 
to be made out Of a single piece, and as the 
entire surface of the oval part is finished ofif 
Fig. 2. 
with a series of rings, the joints are invisi- 
ble. In reality, however, it consists of four 
parts, as shown in Fig. 2: 1, the base and 
cup, a; 2, the ball, b ; 3, the shell, c; 4, the 
cap or cover, d. 
Suppose now that we wish to puzzle some 
of our friends. We must carefully conceal 
from them the existence of the shell, c, for 
it is upon this that the entire puzzle de- 
pends. The hollow part of this shell is an 
