Marshall County Republican. (Plymouth, Ind.) 1856-1878, 1862-07-03


ats spiral fanges stiffen the rod and the rough
edges dsspate the electricity, and therein is much
better than smooth surface. "-DR BoYSToS
"'The open hanges running spiraily the whole
length of the rod, enable the fluid to freely ira
verse both surfaces and at the same time pursu,
the spiral course natural to its movement. "-PRoF
BUcKMAs.
"When electricity is communicated to con
Quoting body, it does not distribute itself uniform
y through the whole mass, but exclusively upon
the surface. "-DRAPER's CHEMISTRY, page los.
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-
gster. Of recent date. says the frame dwelling OF
Nathaniel Frame, in Warren Township, st. Jo-
seph Co., struck by-lightuing. The rods or il
were square iron, in pieces, connected BY burs or
nuts; the electricity left the rod at the first
nection, and passed into the house, doing consider
able damage. During the same month. the dwell
ing of d. {. Bloomer, of Peru Up, same Co.. was
struck BY lightning. Its rods were Of futed iron,
commercially burrs or nuts. The lightning left the
rod at the first burr. and passed into the house, in
jured Mr.. Bloomer and wife slightly, and damaged
the house to an extent Of 800. Mr. Writer'S
house, in German Tp-, St Joseph Co., was similar
~ protected, % and being struck, the lightning
left the rod at the third nut, and seriously damaged
the house. We have numerous instances where
buildings covered wi 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 iDefficicLcy-the building having been
struck by lightning and materially damaged-and
ordered the erection of Munson's Spiral Copper
Rod. We learn that notwithstanding these facts,
the Iron rod pedlers are busy in certain quarters
circulating the most outrageous stories about the
copper rod. We caution the public against them
H. l. ofrd hr carsfs
Copper Lightning Rod. five per cent. may be de-
Quoted from the premium note. No deduction for
Iron Rods."-Faon RULES OF INDIANA FIRE In
sURANcE Co. r.-
"Metal should display as much surface in lateral
dimensions as possible consistent with strength, to
reduce intensity Of action the surface. and heat
ing effect"-ArPLEroN's DIcrrcsARs OF MEcHAS-
Ics, page 4ls.
"iron. on account of it's low conducting power,
is more easily melted than copper."--CrcLosEDrA
or UsEruL hRrs, page 557.
cit is well known the greater the surface OF the
conductor in proportion to its mass the heavier ds'
charge will il be sble 10 conduct safely For in
stance: rod which is 81 times ~ wide as it is
thick, viii conduct charge about 43 per cent
square and has the same cross sections. "-MosEl
G. FAaxEn, ELEcrRlcAL EEGIsrER.
"The efficiency OF Lightning Conductors does
not depend much upon their power to attract the
lightning, as upon the power Of point to draw q
way. nsenslbly. very powerful charges of electric
ty from she electrified cloud, thvs preventing the
disruptive discharge" SULLIVAN.
al would not hesitate to commend Munson's
Rod to al Who wish perfect protection from ae
cidents By lightning. --PRoF. BRowN OF THE N
W. c. UNvEasrv. sE-
Orders may be sentby mail, or Left It our ONCE
No. L. Blackfora's Block. immediately over Amer
lean Express Co.'S Office. Price twenty-five cent
| per foot, and two pollan for points There 10 .
iine field In this business for pedlers who buy q
Wholesale
LOCKE & MUNsoN. Manufacturers.
lspiAHkPoLis, IND.