Courier Democrat. (Langdon, N.D.) 1891-1920, 1894-01-11

variably deteriorate. The combustion
OF plastomenite Is also 80 well balanced
TINT 1t leaves no residue in tho barrei
or cartridge, although the striking veloc-
ity of the projectile Is unusually great.
Its initial velocity from 81-2mm.
caiiber Is 715m.. with q gas pressure Of
considerably below 5000 atm ,spleres.
Furthermore, neltle. cold nor hot
weather has any effect upon the plas-
tomenite cartridges, whereas, NIL pow
ders containing nitro-glycerile suffer
from changes In the temperature. Hith-
erto plastomenite has been m,nufact-
ured principally for sporting purposes,
hut Its good qualities have attracted the
attention of the German military au-
thorities, and it is to be extensively test
ed In the army.
Heat Rays i'm IncAndescent Tampa.
B. e. James makes suggestion that
may serve as pointer to lamp manu-
facturers who are seeking to turn out
lamp that will give the maximum
efficiency mt minimum Of cost. He
mentions that German chemist has
succeeded in producing glass which,
while perfectly transparent, is impervi-
Gus to heat waves. If an incandescent
lamp be grasped. and the current
turned on, heat is instantly felt, but an
appreciable time will elapse before the
| glass becomes hot. In one case heat
has been transmitted through the glass
instantly rs heat; in the other, tempera-
ture has been transmitted. Mr.. James
shows That the principal reason why
electric globes are so relatively iEeffi-
Gent is that the white hot carbon gives
out waves, not only Of the requisite
length to affect the eye, but also waves
Of all possible lengths longer THIN these.
The light rays arc all within very
small compass--from 100000 to 1-60,-
600 Of an inch long, and as matter Of
fact, the all possible lengths longer than
these, include by far the greater part
of the energy Of the current. It Is along
this line Mr.. james proposes that eX-
pertinent shall follow. If q glass can
be made which will keep back these
longer, j. e., heat waves, a heat can be
accumulated III the globe approaching
the melting point of the glass, If neces-
sary, and consequently the filanent can
be kept white hot at an expenditure of
a much smaller amount Of current. The
point ut which this heating Of the glass
should be stopped could be suitably de-
ter1nined and regulated. 1t is stated
that the glass for which this quality is
claimed is composed Of sodium, sand
and kaOlin
A Steam Carriage.
G. L. Simonds, Of Lynn, Mass, has
made steam carriage for his own use
that will make ten miles an hour. The
carriage weighs only 400 pounds and
can carry two persons at time. 1t
has the appearance of an ordinary car
riage in front, except there are no pro-
visions made for a horse. The wheels
are Of cycle make and are four in num-
Der. The hind wheels are 43 inches
and the front wheels are 36 inches,
with rubber tires. The boiler and en-
CINE set just in the rear Of the seat
and give the carriage the appearance
in what is called porcupine boiler,
which weighs 100 pounds. The steam
is made by naphtha flames from three
jets. The naphtha is kept in cylinder
enough to last for seven hours, and
| SSAA
gallons. There is pump that is auto
matte in action directly connected with
the engine. The steering part consists
Of crank wheel on the footboard, so
that the engineer can steer and attend
to the engine at the same time. The
body of the carriage rests on a cradle
and three springs. 1t is easy riding,
and allowance has been made for ev-
cry movement The shafts are Of steel
and can stand all of 1000 pounds MIR.
Simonds has given the steam carriage
trial already, and it has proved sue
cess. 1t started off at ten-mile gait;
there was no noise, smoke or trouble
whatever.-Springtield (Mass.) Repub-
lican.
Lfmitati lns of Electrical Knowl-
Lord Kelvin says that although the Ia
bors Of the many workers and thinkers
of the nineteenth century in the fields
of light, heat, electricity and magnet
ism have had splendid results. we must
not fold our hands and think or
say there are no more worlds to con-
uuer for electrical science. What we
know of it is as nothing compared with
what we do not know. The world Is
still asking in vain for al answer to the
question, What Is ELECTRICITY and all
accepted theories teach us nothing OF
the actual motions of matter .,onstitut-
ing a magnetic wave. We have as yet
absolutely no guidance towards any IN
derstanding or imagining of the rcla-
ton between the nndulatory theory OF
light according to Fresnel, or any other
motion or displacement Of the other,
and the earliest known phenomena OF
electricity and magnetism-the electrifi-
cation of matter, and the attractions
and repulsions Of electrified bodies; the
permanent magnetism of loadstone
steel, and the attractions and repulsions
due to it, and certainly we are quite
as far from the clew to explaining, by
other or otherwise, the enormously
greater forces of attraction and repul-
sion now so we'll known after the mod
ern discovery Of electromagnetic.