Daily American telegraph., 1852-11-01
Protection from Lightning,

TNHE undersigned, being the duly appointed Agent
SPRATrs ELEcTRIcAY ELEcTRo- META LIdnT
NNaRoD MASuPAcToRY Covington Kentucky, begs to offer
these superior Rods of Spirawted Carbonized Anneaed
Iron with Zinc Protectors, Electroposye elements
combined in their nanuacture thus rendering them equal
copper conductors They in teneet lengths with
new style Of metallic atcntcd aachnena for brick or
frame buildngs Also glass solaers Of novel and inge
mounsd w ss ysr
inches long, at the base with three angu
lar negative magnets which possess the power to an extra
most fearful thunderstorm, and embrace the entire perfec
ton Of science to the present times the whole constu
ting the rost magnificent and perfect silent conductor
presented to the public
Safety has not been compromised by adording these
ceent rods at such low rates. the greatest attention has
been given their construction be readily attached
The astonishing power the negative dsharg
the air of its opposite ecmcnts has been clearly demon
stracd by the Electromeer when unmagnetized points
have shown but slight results though placed under the
conditions In fact they gather and silently discharge
electricity from the atmosphere when you would scarcely
suspect any being present
tent you hereby cautioned against laying yourselves
LIABLE by purchasing of those who not authorized
who substituting inferior limitations All agents duly
appointed show their Certificates Have good rods
none. CHARLES w, IIEYDoN,
Washington City.
do hereby certify that have app lied various powerful
Rods that the results of these experiments convince
that they will resist the action of atmospheric causes
scnta 10 protection against lightning The used
in the above experiments solution Of chloride
dum common sat acec acid sulphuc acid and hydro
chlorc acid With tho first, there action the
metal with the several acids there very s9a
sufficient to show that atmospheric influences would have
no sensible effect
.7H4I 6I JOHN NLECONTE Prof of Nat. Phil etChem.
UNIVERSITY OF GA, October s, 1880. essst
The lightning Conductors of Mr. spratt offered to me,
well calculated to perform the Office for which they
intended. Yours, truly, Prof R0BT. PETER
LEXINGTON, Kr. February 20, 1850.
s CHICAGO, September 8, IS5oJ
This may certify that have examined somewhat crt-
cay James Sprats Patent Lightning Rods, and that
opinion that IL Is constructed scientific principles For
combining durability, cheapness and efficacy, 4 deem it
equal and think SUPERIOR to other rod ever offered
for my inspection. Prof JAS v. 2. BLANEY.
t AUGUSTA, (GA) November IL, 1850.
This will certify that have examined the Lightning
Rods, Metallic Points and Isolang Attachments,
conformity to general laws Of the electric uid the
metallic compound constituting the Points promising
result Of several tests to which they submit
ted resist years the action of those atmospheric
most likely to corrode them A. MEANS,
Prof Phys Sc, Emory College, Ga, and Prof Chem and
Pharm- Medical College. Ga
The Lightning Conductors put up by Mr. Henry M Smith,
this city, the plan of Mr. spat appear to TO be
very well devised and in point OF mechanical construction
the best have
be hoped that the of these Rods may become
general important auxiliary defence against danger
which be regarded Of ordinary magnitude to
which all buildings are liable. II. SILIMAN, Jr,
Prof of Chem. in the University OF Louisville.
LOUISVILLE, January 81 1851.
All orders left at ANDREW DUFFYs Stove Mandatory,
7th street, will be promptly attended to; at GE0RGE
BELLS Alexandra, Va Of King and St Asaph ss
spli-6 sLsg