THE YOUNG 
down until it is below the surface of the 
board ; this screw can be used for holding 
thin stuff while it is being planed, polished, 
or sandpapered, as it can be raised to suit 
any thickness. Workmen call this tem- 
porary work bench " a horse," which is a 
Fig. 10. 
A^ery appropriate name. It is fastened to 
the table by a screw-clamp, vice, or hand- 
screw ; the last named being the better of 
the three because of its being made of 
wood, and, therefore, the least liable to 
injure the table or the "horse." There 
are many other devices for holding the 
work in place while being operated on be- 
sides the ones mentioned, but they are 
mostly of a complicated character, and 
too costly to be within the reach of the 
young amateur whose means are limited, 
therefore, no further reference will be 
made to them. 
Besides the saw frame, horse, and hand- 
screw, the following tools will be indis- 
pensible, namely : a few brad awls of differ- 
ent sizes, or better still where it can be 
afforded, a hand-drill with half a dozen 
assorted drill points. The former will 
cost about five cents each, and the latter, 
drill-points and all complete, can be 
obtained for one dollar. Fig. 11, shows the 
hand-drill with point attached, also wrench 
for taking out, and screwing in drill- 
l)oints. A few rat tail files will be found 
Fig. 11. 
very useful in smoothing up the edges of 
quick curves. A flat file and a couple of 
three sided files will also be found of great 
service in finishing up the work after it 
SCIENTIST. 85 
has left the saw. The files of course, will 
require to be of different sizes. A tenon 
saw which will cost about seventy-five 
cents will often be wanted to cut the stuff 
near to the size required, and also to cut 
mitres and straight work where it is out- 
side the pattern. A light claw hammer, 
a glue pot, and an assortment of small 
brads will also be found very useful. A 
piece of cork two inches wide, one inch 
thick, and three inches long, makes the 
best rubber known ; wrap the sandpaper 
round it, then smooth up your work and 
it will be found that the cork will not 
permit the sandpaper to cut off the sharp 
angles of the work. Where the cork can 
not be obtained, a good substitute can be 
made by taking a piece of flat India rub- 
ber and gluing it on to a piece of pine 
board. When using, keep the rubber side 
next to the work. It will also be well to 
have a good supply of saws of all sorts 
on hand, for the beginner icill break a 
number of them before accomplishing 
much work ; but this should not be cause 
for discouragement, for we venture to 
say, that no one has reached to any de- 
gree of perfection in the art of scroll-saw- 
ing, without breaking a large number of 
saws ; with care and practice however, 
saws can be made to last a long time, and 
the longer they last, the smoother and 
cleaner they cut. 
Lessons in Magic— VIII. 
The Filtration. 
THIS trick is so old, that it will appear as 
new to most of the present genera- 
tion, very few of whom have ever seen it. 
It is a most excellent illusion, and may be 
exhibited with equal effect in the drawing- 
room or on the stage. 
Two large glass jars, one filled with 
water and the other with ink, are brought 
on the stage and placed at a distance from 
each other. To convince the audience 
that there is really ink in one, the per- 
former ladles out some and pours it on a 
piece of white paper which is immediately 
discolored. 
All doubts as to the contents of the jars 
being satisfied, they are covered with 
handkerchiefs, and on removing these, it 
