The Indianapolis journal. [volume] (Indianapolis [Ind.]) 1867-1904, 1896-11-01

expand. filling the hold and instantly
smothering any fire without damage to
goods.
A novelty I'm decorative painting was re-
Gently brought out by Sven. a Swedish art
list, and is said TO have attracted much at
tention in Berlin. The paintings are exc
cuted upon plate glass intended panels
for furniture or ornamental articles. BY
the use OF phosDhoreScent material. the
colorS are given glowing briiliancy.
which causes the panels to stand out with
singular attractiveness in partial obscurity
or complete darkness. 1t is claimed that
such paintings do not fade. and they are
made practically indestructible by the pro-
lection Of the glass.
The action of coal gas on rubber tubing
has been investigated by NJ. Grosheintz.
Connecting a pressure gauge to a gas sup
ply by a rubber tube. it was found that.
twelve hours after the closing of the stop
cock. the pressure had not only disap-
peared, but an actual defect of pressure
was Indicated The rubber had gained in
weight from absorption of the gas. Further
research showed that black rubber, with
y TO III per cent. of added solids, absorbed
the gas the most readily; red rubber, with
10 or II per cent, coming next; while the
ordinary gray rubber. containing % to 80
per cent. of foreign material, was least af-
fected. This gray rubber proved its super
fority as retainer by being the last 10 be
so permeated by the gas as TO yield a
smell in the room.
The animal life of the ocean is confined
chiefly TO two regions-one extending from
the surface to a depth of about four hum
dred meters. the other being the ground
region at the bottom. Many animals. more
over, approach the surface at night but
descend in the daytime. DR.. jacques Loeb.
of the United States Fish Commission, finds
that this daily migration is largely due TO
the effect on the animal of light, animals
In the condition which he terms positively
heliotropic being forced to move toward the
light, while those that are negatively hello
troplc move away from il. AT a depth of
10 Iour hundred meters light practical
on the brightest day TO AFFECT a photograph
lc plate. In the zone between the surface
and this depth the sensitive animals move
the mechanical effect of the light, causing
tnem TO rise or descend until their hello
tropism reaches a state of equilibrium or is
reversed DR.. Loeb has proven that moths
anu otner nylng creatures are impeled to
approach the light by a similar action and
not by fondness for light.
In study of the tools Of the ancient Ro-
mans. as preserved at Pompeii. Professor
GOODMAN has been most impressed by the
resemblance between many of the nipple.
ments Of 1,S0O years ago and those of to.
day. Except for the rust, the iron tools OF
Pompeiian factory might almost be taken
for those of modern tool shop. Sckles
Dill hooks. rakes. forks, spades. black
smiths tongS. hammers, soldering iron
planes and shovels are much like those OF
To-Day; but the most marvellous instru,
ments are those for surgery. beautifulIy
executed and of design exactly similar To
some recently patented and reinvented In.
credible as 1t may appear, the Pompeiians
mad well-made wire ropes The bronze bra
zier and kitchener had boilers at the side
and taps running off the hot water: and
tnere We're ewers and urns with interior
furnaces he
ent arrangement in steam boilers Meta
saIes mad substantial locks many of them
ingenious and intricate. Lead pipes under
tne streets distributed the water supply
and there were many public drinkinr fop,41.
largo houses - '--s