Daily American telegraph., 1852-11-15
Protection from Lightning.

VIE undersigned, being the duly appointea Agent Of
SPRATr5 ELEcraieaa AND ELECTRO MsTALLUR6isY Lldnl
Me-oD MARUrAcroRy, ,Covington Kentucky, bags offer
there superior Rods Of Spirawted Carbonized Anneaed
ron with Zinc Protectors, and Electropesye elsments
combined In their manufacture thus rendering them equal
ocopper conductors. They are in taneet lengths with
accuratslyftted brass connecting joints entire
new style of metallic paentea attachments, for brick
frame bnildngs; also, glass olaars, of novel and inge
nions construction, patened forming lock- the whole
twelve inches LONG, surrounded at the base with three angn
lar negative magnetic which possess the power TO extra
fearful thunderstorm and embrace the perfec
ton ofsence up to tho present tms the whole eonsttu
ting the r.ot magnificent and perfect ent conductor ever
Safety has not been compromised by afordns these
csent rods at such low rates the greatest attention has
been given otheir TO be readily attached
The astonishing pnwer Of the in dischar
sated by the Eectromster when unrnagnetized points
have shown but slight results though placed under the
same conditions In fact they gather and silently discharge
electricity from the atmosphere when you would scarcely
suspect any being present se4. sge...s
There improvements being secured by double leters pa
tsn are hereby cautioned against laying yourselves
liable by purchasing of those who not authorized
who substituting inferior limitations. All agents duly
meme CHARLES ". ,HEYDoN,
- Washington City
do hereby certify that have app lied various powerful
chemical reagents to pras Patent Points for Lightning
that they will resist the action of atmospheric causes and
thereby preserve ths extremity sharpe condition most
genital to protection against lightning The reagents used
ia the above experiments solution of chloride
iu, common SALT scetc acid sulphuric acid hydro.
choric acid. With the fret there action the
metal; with the several acids, there very sa fact
nucient TO show that atmospheric influences would have
no ssnsibe effect
UGrvERsIrY OF Ga, October 8, 1850
The lightning Conductors Of Mr.. spratt offered 70 me,
are well calculated to perform the oce for Which they arc
LExISoros, Kr., February 90 1850.
CHICAGO, September 3, 1850
this may certify that have examined, somewhat critis
Ealy James Sprstfs Patent Mghtn Rods and that
of opinion that IS constructed scientific principle For
combining durability chetpness, and efficacy deem &c
equal and think superior TO any other rod ever offered
for iny inspection. Prof JAS. v. q. BLANBY.
AUGUSTA, tGa) November IL, 1850.
This viii certify that have examined The Lightning
Rcds Metallic Points and Isosting Attachments,
featured by Mr. Spratt and regard them constructed IN
conformity 10 the general laws Of the electric uid and the
metallic compound constituting the Points, promising,
from the result of several tests to which they submit
ted 10 rost for years the action OF those atmospheric
most likely TO corrode them. A. MEANS,
Prof Phys 50, Emory College, Ca and Prof Chem ans
Phsrul., Medical Coliege, Ga.
The Lightning Conductors put mp by Mr. Henry n Smith,
Of this city, tho plan az Mr. sprat appear to be
worry we'll devised and ia point Of necEnosl construction
arc The bsst have ever
1t % TO be hoped that the Of ess Rods may become
general Important auxiliary defence against danger
which muet be regarded Of ordinary magnitude, to
which oil buildings are liable II. sILIMAh, Jr,
Prof Of Chem. In the University Of Louisville,
LOUISVILLE, January n, 1851.
All orders len at ANDREW DUFFYs Stove Mandatory,
Th street, viii be promptly attended 70; at GEorGE
BELLS Alexandria, Va o. King and St Asaph St.
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