Juniata sentinel and Republican. [volume] (Mifflintown, Juniata County, Pa.) 1873-1955, 1882-10-04

| Scientific JuggteTy.-A clever magI-
clan now performing in this country, has
neat way of bringing the electric current
10 his aid where it would hardly be ex-
pected. For example, after borrowing o
few watches he places them on a plate
which he suspends by bit of string to 9
little bar between two cords from the cell
Ing. Suddenly flash comes from tn ,
sar, tie string is burned, and plste and
watches fall with a crash. The broken
plate and ruined watches are restored by
shooting them out Of gun, against a
| framed black square, also suspended BY
cords from the ceiling. and here asain the
G ectric current sctuates mechaL SIN which
causes the lightning-like disappearance OF
an Interposing screen. The current again
works he hammer of a glass bell appar
emily suspended by mere thread. bu,
which accurately counts the number OF
spots on chosen cards. In electro-muslc
ne Is an adept. tie has a dozen or more
drums which be heaps up on a kind OF
barrow in the middle Of his stage. Then
SEATING himself at mis- piano, at some dis
tance away, he pays a lively air, to whith b
the mysterious drums beat at fr5t time,
and then play deafening accompaniment
OF course concealed banners operated bv
| electromagnetic are at the bottom or the
ruzZle. HIS orchestrion is a much NOR,
elaborate contrivancer Ii is a good sized
parlor organ. provided with supplement
tai keyboard, aud surmounted with a be
wilderlng mass of brass tubes and appara-
tus An air played by the performer is
4 tondlap1t ;al D.,
bells at the further end of the hall, then by
small bells near bv, then another organ
near the ceiling issues notes like flute, a
chorus of sleigh bells in still another part
of the hall joins in; the music initiates a
storm, and huge iron plate in another
quarter rattles itself, while from a box
near the ceiling issues the sound of falling
RAIN. Finally two sharp explosions from
miniature guns near the roof are heard, the
lights are turned down, and on the organ
appear revolving Geissler tubes, flashing
out greea and blue lights in the weirdest
manner. as the curtain shuts the magician
and his instrument from view.
Giytotype Printing Blocks. - The
French method of producing printing
blocks by etching on zinc has been brought
10 a high degree of perfection In tba,
country, and its use Is becoming more and
more extended. BY request. we describe
again the main process.
Il paper is first prepared by covering
India paper with one or two films of gela-
line solution, applied very ihInly and even
ly, and allowed TO dry, after which a
coating OF cold starch paste is put ON, and
subsequently, little gamboge dissolved in
water. TIE picture, Crawn in fatty ink
upon the paper, is laid with Its face down
ward upon the zinc, the surface of this
having been well cleaned 10 remove all
grease A sheet of paper, molstened with
nydrocolor:c acid, is ylsced upon it, and
above this, sheets of dry paper, and tn;
whole passed two or three times through a
ithosraphic press. The back of the paper
conta ming the picture is now well most
led with water, which allows it to be re-
nJved rom the ziuc, leaving behind the
fatty picture. AT er this, the plate is
washed with soft sponge. and subseq1eat-
Y with gum water, to which Q little hv-
drochloric acid has been added, and the
whole allowed to dry upon the metal An
ordinary z'ncograph plate is thus obtained,
| from which can b. taken an impression as
trom lithographic stone. But tor rel,ef
painting, etching Is requlred-the process
for which n' ei mol be here detailed.