El Paso herald. (El Paso, Tex.) 1901-1931, 1913-09-06
an equivalent of 1900


upon each acre an equivalent of 1900
horsepower, working continuously.
According to the late 5 p. Langley,
the sunshine that falls upon one square
yard of the earth's surface represents
an energy equal to about one horse
power. If all he sun rays tnat stTiKe
Manhattan Island upon a summers day
could be put to work, they would de-
velOp enough power TO run all the ma
chlnery OF the world, to prOpel all the
railroad cars and street cars, and to
heat and light all the cities on the
globe.
An EngliShman in India named Ad-
ans claimed that with 500 mirrors he
could produce temperature CT 1000
degrees There was no limit TO the
number of mirrors that could he en-
plOyed, and none to the Intensity CT
heat ObIainable. or to the force of
steam generated. The apparatus costs
little, and might be used FOR an indefi-
mite period without repairs or loss Of
efficiency
Devises Solar Cook Stove.
1t was this man Adams who devised
the first practical solar COOK stove
u cOnicaI, eight-sided box of wood
lined with silVered glass, and having
at its bottom small copper boiler The
boiler was provided with a glass cover
to retain the rays concentrated Dy he
mirror upon the pOller- in this con-
trivance any sort If food could be
quickly cooked. If the steam genera ted
was retained, the result was a stew or
bon; if allowed to escape, it was a
bake. RauOns for seven men could be
prepared in the box in two hours, in
Guiding meats.
Another n-cooker.~ invented not
long ago by a san Francisco man. is a
rectangular box, its two upper sides Of
glass and the two lower sides of wood
double walled and line with black felt.
one OF the upper sides is exposed to the
direct rays OF the sun, while the other
is provided with a series of prism-like
mirrors 1nasmuch as box and mirrors
are adjustable at various angles (the
continuance being set on one edge), the
suns rays may be concentrated upon
the inside Of the ''oyen" at aBy hour OF
the day.
This kind of solar oven is further
provided. inside. with shelves. which re-
main horizontal, no matter at what an
gle the box is placed They are for
baking Along the top edge Of the box
extends a flat piece of metal, hollow.
into which hot air IS admitted from
the oven beneath This is the broiler
and viii cook a steak nicely. To the
housewife stove OF this description
must strongly recommend itself, mas
much as it is perfectly clean, requires
no fuel. and produces no asheS-uot TO
mention the fact that the cooking it
does costs nothing
Printing Press Run by sun Power.
As far back as 1882, a printing press
was run by sun power at the. Tuileries.
as a feature of an exhibition given
there. The apparatus employed consist
ed of great reflector in the shape of
a hollow cone, 10 feet long. which con-
centrated the solar rays upon a boiler
an ARRANGEMENT somewhat similar to
that already described as adopted by
the English inventor Adams. The
steam thus generated drove an engine
which ran a press and printed a little
newspaper set up for the occasion and
called the SOleil Journal.
The French possessions in northern
Africa are mostly deserts. and torment
ed with tropical heat The sunshine
there is so much too much that meth
DDS of utilizing it for practical purposes
in one way or another nave taxed the
ingenuity of engineers For disulling
water for drinking purposes. there has
long been employed in that part of the
world a form of cOntrivance consisting
of a boiler and concave mirror, the
steam generated being condensed in
cOiIed tube surrounded by water APP
paratus Of this kind is made small
enough to be portable so that a soldier
may carry it on his back. When set
up il viii boil q quart of water, and
keep it boiling, with the rays that fall
uDOn ] IL square yards OF surface 1t
viii distiIl two gallons In a day OF con-
tinuOus sUnshine-enOuSn 10 supply
''--- Hot water in California.
At the present time. IN southern Cali
fOrnia many dwellings are supplied
with hot water without expense by
means of roof boxes, covered with
glass painted black inside, and suitably
insulated for conservation of heat In
these boxes, which are shalloW, water
is raised to a high temperature by the
RAYS of the sun. and is drawn OF by
simple arrangement Of pipes as 1t is
wanted for Washing or other househ0ld
uses. OF course. it has to be pumped
into the boxes to start with, but gravity
attends to the rest of the business
1t is said that the lamps IN the hSht-
houses along the Panama canal are TO
be lighted by the sun. The solar rays
g
RANGED that their expansion from heat
win close valves in the lamps and cut
off the gas When night arrives, Ihe
cooling of the metal of the cyuhders
viii automatically open the valves
turning on the gas, which. VII &c lS-
nited by small pilot Jets. Necessity
for the employment of gas tenders viii
thus be done away with and the cen
sumption of gas will be reduced
sun Energy Is Decreasing.
Our sun is small one, as such ce-
1estial bodies go Also. it IS dying,
Prof n. J. J. See one of the foremost
of LIVING astronomers SAYS that half q