Daily American telegraph., 1852-11-18
Protection from L.

7NHE undersigned, being the duly appointed Ag.-
SPnA1Ts ELECTRICIAN AND EEUTRo hETAlIUReIBT LIGHT
MAKuFAc1oRY Coyingon Kentucky begs to offer
these superior Rods of Cabonzed Annealed
combined in their nanuacture thus rendering them equal
to copper conductors They In teneet lengths with
style Of metallic patsnted attachments brick
frame buildings ALSO glass solaers, of novel and inge
NOUS construction, paented0 forming lock- the whole
mounted with solid platinum oliver point patontedl
inches long, at he base with three ang
lar negative magnets which possess the power to extra
ordinary extent Of dischargng the opposite elements of the
most fearful thunderstorm, and embrace the entire perec
ton Of scanee up to the present time the whole const
ting the most magnificent and perfect silent conductor
presented to the public
Safety has not been compromised by aordng these sx
eent rods at such low rates. the greatest attention has
been given their construction be readily attached
The astonishing of the negative in scharg
srated by the Elecrometer, when unmagnetized 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 e.5
tent you are hereby cautioned ogaint laying yourselves
liable, by purchasing Of those who not authorized
none - say ''' Y oHAKIEs W. HEYDoS,
Washington City.
hereby certify that have app lied various powerful
chemical reagens to spratts Patent Points for
that they will resist the action Of atmospheric causes and
thereby preserve the extremity condition most es
In the above experiments were solution Of chloride Of
dum common sat acec acid sulphuIc acid hydro
ohlorc acid With the first there action the
metal with the several acds there very gha fact
sufficient to show that atmospheric influences would have
no sensihle effect 4E
JOHN LECoNTE, Prof of Nat Phil. etChem
UNIVERSITY OF GA, October s. 1850.
The Lightning Conductors of Mr. sprat offered to me-
well calculated to perform the office for which they
intended. Yours, truly, Prof RoBT. PETER,
LEXINGTON, XII. February 20, 1850.
This may certify that have examined, eomewhat cr
Iay, James sprats Patent Lightning Rods, and that
Of opinion that 1t IL constructed scientific principles For
comhping durability, cheapness and efficacy, deem X
equal and think SUPERIOR TO other rod ever offered
for my inspection, Prof JAS v. 2. BLANEY. Z
AUGUSTA, (GA.) November II, 1850.
This win certify that have examined the Lightning
Rods Metallic Points, and Isolang Attachments, manp
ctursd by Sprat and regard them constructed in
conformity the general laws Of the electric fluid the
metallic compound constituting the Points promising
from the result OF several tests To which they submit
resist years the action OF those atmospheric
most likely to cerrode them A. MEANS,
Prof Phys. Sc. Emory College Ga, and Prof Chem ana
Pharm. Medical College. Ga.
The Lightning Conductors put up by Mr. Henry NJ Smith,
very well devised and point Of mechanical construction
a the bert have ever
Is TO be hoped that the Of these Rods may become
general important auxiliary defence against danger
which must be regarded Of ordinary magnitude 10
which all buildings are liable. r. sILIALAN, Jr.,
Prof Of Chem. in the University OF Louisville.
LOUISVILLE, January III, 1851.
All orders left at ANDREW DUFTYs Stove Manufaetory
It'll street, will be promptly attended TO; at GEORGE
BELLS Alexandria, Va Of King and St. Asaph
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