Evening journal., 1900-03-21

make It do manB drudgery at practl.
cally 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,
10 substitute It everywhere for tho
present use of coal and wood and 9th.
or fuels-has been the dream OF De
Cous Herschel and of Ericsson. Pro-
fessor Langley, Of the Smithsonian
Institution, has written powerful
words calling attention to the neces.
sity for such an invention. He has
declared that the human race must
depend in the future upon the sun for
heat and power It is a method for
the utilization of this heat of the sun
in a practical way that Dr. William
Calver claims TO have discovered. In
substantiation 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 q question, that ! 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. have
also devised a method for the storage
OF this heat, so that it can be used at
any desired time and place. l feel
that beyond a doubt have settled for
ever the question of the actual COM
mercial harnessing 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 l can generate
With the concentrated rays of the
sun collected against the mountain
side | could melt the rocks and cause
the earth to burn like living volcano.
can produce in one spot heat vast
er and more fierce than that on the
face of the 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 tithe Of the
cost of digging and raising coal and
cutting down timber With heat thus
generated shall be able to smelt easi-
~ the hardest and most rebellious OF
the oros. With it 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 gas.
This motor consists Of the simplest
ARRANGEMENT possible Each of the
small fiat mirrors is attached to a
rearing device BIZ which It can be
moved at pleasure. Each or all OF
these little surfaces can be concen-
trated on a very snail surface at any
desired distance In practice they are
concentrated on tie reservoir in the
centre OF the yard. Each glass re
fleets from twelve to fifteen degrees
of heat from the sun"
How about the point of concentra
tion when the sul moves aroundg
was asked.
THAT is simple enough" said DR.
Calver. THE fraino moves, too. Il
is geared and adju sted in such a sim
pie manner that il can be moved alonl
the circular track by even the mos
ignorant OF attendants. One man coulC
keep a great number of these ma
chimes focused on 4 single point AL
that is required IL the occasional ad
iustment of some liulleys.
But how abol. the cloudy ant
rainy days2" IVES asked.
From the 600 mirrors in the lab
oratory here | haze generated on tn
coldest days sufi lent heat to wei,
copper and Russian iron. hav
burned a brick halfway through il
less than an hour l have concentrat
ed the combined heat from the mil
rors on an unburIsd brick. and hav
burned it so hari that it scratche,
STEEL"
DR.. Caiver pich,d up a stick from
the frozen soil. lie mounted the res
ervoir and fOcusl,d d the heat OF tn
mirrors upon ,-tion of the frozel
wood. In II ment It cracked
smoked and burst M a fierce flame.