Marshall County Republican. (Plymouth, Ind.) 1856-1878, 1862-07-24

Btatinum, q.
"1ts spiral f'angss stiffen the rod and the rough
edges dissipate the electricity, and therein is much
better than a smooth surface."-DR. BoYsroN-
"The open fianses running spirally the whole
length Of the rod, enable the fluid to freely ira
verse both surfaces and at the time pursue
the spiral course natural to its NOV mcnt.'-PRoF.
BucKMAN.
"Whcn electricity is communicated to a con
Quoting body, IL does not distribute itself uniform
ly through the whole mass, but exclusively upon
the surface. "-DRrFR's CHEMISTRY, pace 10a.
cooper is little affected by exposure, whereas,
iron soon rusts. and in few years ceases to be a
conductor. "-BENsoS's Essays.
A correspondent of the South Bend (fnd.) Re
gsicr of recent date. says the frame dwelling of
Nathaniel Frame, In Warren Township, ST. Jo-
seph Co., was struck by lightning. The rods on IL
were square iron. in pieces, connected by burs or
nuts the electricity LEFT the rod at the first con-
nection. and passedn into the house, doing consider
able damage. During the same month, the dwell
ing of ID. !. Boomer, of Peru Tp.. same Co.. was
struck by lightning. Its rods were Of huted iron,
connected by burrs nuts. The lightning Sfs
rod at the first burr and passed into the house, in
jurcd Mr.. Boomer and wife slightly, aud damaged
the house to extent of 500. Mr. Writer'S
house in German 1'p, st. Joseph CO., was similar
ly protected. % and being struck. the lightning
left the rod at the third nut and seriously damaged
the house. We have numerous instances where
bindings covered wi h iron rods, have been injur-
ed or destroyed by Lightning. The School Board
Of Keokuk. Iowa, recently decided to take down
the iron rods on their central school house because
of their interchangeable building having been
struck 10y lightning and materially damaged-and
ordered the erection Of Munson's Spiral Copper
Rod. We learn that Notwithstanding these facts.
the Iron rod pedlcrs are busy in certain quarters
circulating the most outrageous stories about the
copper rod. We caution the public against them
"Whcn the building is protected by Munson's
Copper Lightning Rod, five per cent. may be dc
Quoted from the premium note Nodeduction for
Iron Rods."--FRon RULES OF IsD,AsA FIRE In
suRAScE Co.
"Mstal should disp,syas much surface in, lateral
dimensions possible, consistent with Strength 10
reduce intensity of action the surface, and heat
ing effect IS DIcrIoSARs or MEcnAs-
les, page 4l6.
"Iron, ON account of its low conducting power,
is more easily melted than ccppes.,'--CrcIorEDIA
OF usEFuL AIRS, page 557. .....-. .....,.
"It Is well known the greater the surface Of the
conductor IN proportion 10 its mass, the heavier s
charge viii ID be able to conduct safely, For in.
stance "a rod which is 81 times as wide as il Is
thick, will conduct a charge about q per cent.
greater without being melted, than rod which Is
square and has the same cross sectons."-MosEs
G.. FARnEs. Ef.EcrRIcAL ESci sExn. rlioric sf-T
The efficiency Of Lightning Conductors does
not depend much upon their power TO attract the
lightning. upon the rover of point TO draw a.
way. insenslbly, very powerful charges Of electric
ity from the electrified cloud, thus preventing the
descriptive dschsrge,''--PRoF SIfI,NAS-. - 49,.
81 would not hesitate to commend Munson's
Rod 10 AL who wish perfect protection from &C
cideuts by lightning <-PRor. BkowS OF THx NJ.
W. G. UNIVERSITY.
L...+<-.-rgF -. 4 T.. 4