Evening capital. (Annapolis, Md.) 1884-1910, 1900-02-16

make II do mans drudgery at practi-
cally no cost; TO make II 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 it everywhere for the
present use OF coal and wood and 9th
er 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-
silly for such an invention. He has
declared that the human race must
depend In the future upon the sun for
heat and power. II is a method for
the utlization " this heat of the sun
In n practices way that DR.. William
Calver claims 10 have discovered. In
substantlation Of his 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.
II believe. in fact, l know" said he.
In answer to 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 1t can be used at
any desired time and place. | feel
that beyond doubt have settled for
ever the 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
- x.,l.f .I n 20
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 1.-THE of the
cost of digging and raising coal and
cutting down timber. With heat thus
generated shall be able to smelt east.
ly the hardest and most rebellious of
the ores. With ii shall make quail
ity OF glass which cannot exist at pres
ent. With IL an innocuous gas can be
made at n far less cost than that or
our present coal gas.
"This motor consists of the simplest
Arrangement possible. Each of the
small fiat mirrors is attached to
gearing device by which it can be
moved at pleasure. Each or all OF
these l,gtle surfaces can be concen-
trated on very small surface at any
desired distance. In practice they are
concentrated on the reservoir in the
centre of the yard. Each glass re-
fleets from twelve to fifteen degrees
OF heat from the SUM-
How about the point of concentra-
ton when the sun moves around?'
was asked.
THAT Is simple enough" said DR..
Calver. The frame moves, too. IL
is geared and adjusted in such SIM
pie manner that it can be moved along
the circular track by even the most
ignorant of attendants. One man could
keep great number of these ma
chimes focused on q single point. All
that is required Is the occasional adj
justment of some pulleys.
But how about the cloudy and
rainy days?" was asked.
From the 1000 mirrors in the lab
oratory here l have generated on the
coolest days sufficient heat to weld
copper and Russian iron. have
burned a brick halfway through in
less than an hour. l have concentrate
ed the combined heat from the mir
rors on an unburned brick. and have
burned 1t so hard that it scratched
steel"
Dr. Calver picked up a stick from
the frozen soil He mounted the res
crvoir and focused the heat of the
mirrors upon a potion OF the frozen
wood. In moment 1t cracked.
smoked and burs. i',;o q fierce aame.