Evening journal., 1900-03-10

make IL do mans drudgery at practi-
caly no cost; TO make il hew his wood
and draw his water, run his railroads
furnish light and heat to cities, propel
vessels across the ocean-in short.
TO substitute il everywhere for tho
present use of coal and wood and 9th.
er fuels-has bcen the dream of Do
Cous, HeTschel aud of Ericsson. Pro-
lessor Langley, CT the Smithsonian
Institution, has written powerful
words calling attention to the neces.
siiy for such an invention. He has
declared that the human race must
depend in the future upon the sun for
heat and power Il is a method fof
tho utiiization Of this heat OF the IN
in Q practical way that Dr. William
Calver claims 60 hsye discovered. In
slhstantiation Of lbs claim, he attains
results which would seemingly con-
vince the most skeptical Dr. Calver
seems thoroughly wrapped up in the
work that he has accomplished and
the work that he has in view
Il believe, in fact. l know" said he,
In answer to a question, that l have
solved the problem Of the direct con-
version Of the suns rays into heat,
which can be used on a far cheaper
commercial basis than coal. I have
also devised a method for the storage
of this heat, so thst it can be used at
any desired time and place. feel
that beyond q doubt have settled for
ever tho question of the actual com
mercial Harvesting of the direct rays
of the sun and of their adaptation to
the needs of man.
There is no limit to the intensity
of the heat which / can generate.
With the concentrated rays Of the
sun collected against the mountain
side l could melt the rocks and cause
the earth to burn like a living volcano.
I can produce in one spot a heat vast.
er and more fierce than that on the
face of tho sun itself. and a greater
heat than any now attainable through
the combustion OF known substances
or through the agency Of the electric
arc. which now furnishes the fiercest
heat known to man.
"The cost of this heat for CONNER
/ cial purposes is not a 1.-THE of the
cost of digging and raising coal and
/ cutting down timber. With heat thus
generated ! shall be able to smelt easi
/ ly the hardest and most rebellious OF
tho ores. With it I shall make a quail
ity Of glass which cannot exist at pres
ent With it an innocuous gas can be
made at a far less cost than that OF
our present coal gss.
"This motor consists of the simplest
arrangement possible. Each of the
/ small fiat mirrors is attached to a
| gearing device b. which it can be
| moved at pleasure. Each or all OF
\ these little surfaces can be concen
trated on very sInall surface at any
! desired distance. In practice they arc
! concentrated on the reservoir in the
centre of the yarl. Each glass re
\ fleets from twelve 10 fifteen degrees
of heat from the sun
How about the point of concentra
tion when the sui moves around?'
was asked.
THAT is simple enough said DR.
Calver. "The frsile moves, too.
is geared and adju ,ted in such sim
pie manner that it can be moved alonl
the circular track by even the mos
ignorant of attendants. One man coul'
keep a great nu1lber of these ma
chimes focused on n single point. AL
that is required ii the occasional ad
justment OF some uulleys.
But how abOI. the cloudy ant
rainy days?" was asked
From the SOC mirrors in the lab
oratory here have generated on tn
coolest days sum mCient heat to well
copper and Russian iron. I hav
burned a brick halfway through i
less than an hour I have concentrai
ed the combined iieat from the mil
rors on an unburl ed brick, and hav
burned it so hari that il scratche
steel"
DR.. Calyer pilhfd up a stick fror
the frozen soil. u Q mounted the re.
crvoir and focused the heat of tn
mirrors upon p 'tion of the froze
wood. ln m ment it cracke,
smoked and burst pt> a fierce fame.