Daily American telegraph., 1852-08-12
Protection from Lightning.

nTNHE undersigned being the duly appointed Agent OF
SPRATT's ELECTRICIAN ELECTRO METAILuRGIsT LIGHT
NuNaRoD MANUFAcroRr Coyingon Kentucky begs to offer
these superior Rods sprawsted Carbonzed Annealed
combined manufacturer thus rendering them equal
copper conductors They In enet lengths with
accurately fitted connecting joints, entire
style metallic (patentc Attachments for brick
frame buildings also glass isoater of novel and inge
mounted with solid platinum silver point, (patsned
twelve inches long, surrounded at the base with three
lar negative magnets which the power an
ordinary extent dschargng the opposite elements of the
fearful thunderstorm, and embrace the entire perfe
ton Of science up to the present time the whole consu
ting the most magnificent and perfect silent conductor
presented to the public.
Safety has not been compromised by aordng these
ceent rods at such low rates. the greatest attention has
been given their 20 to be rend attached
The astonishing of the negative magnets in dscharg
strated by the Eectrometer when unmagnezed 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. 81
teu you hereby cautioned against laying yourselves
LIABLE purchasing of those who not authorized
who substituting inferior limitations. All agents duly
appointed show their certificates Have good rods or
none CHARLES W. HEYDoN,
Washington City.
do hereby certify that have app lied various powerful
chemical reagents to pras Patent Points for Lightning
Rods and that results of these experiments convince
they will resist the action Of atmospheric causes and
thereby preserve the extremity most e
senal protection against lightning The reagents used
experiments solution of chloride Of
dum common salt acetic acid sulphurc acid and hydro
chlorc acid With the FIRST there action on the
meta with the several acids there very sgta fact
sufficient show that atmospheric influences would have
sensible effect.
JOHN LECONTE. Prof Of Nat Phil. ct Chem.
UNIVERSITY OF Ga, October 8, 1850
The Lightning Conductors of Mr.. sprat offered to me-
are well calculated perform the oce for which they
intended Yours truly, Prof ROBT, PETER.
LEXINGTON, KY, February 20, 1850.
CHICAGO, September g. 1850.
This may certify that have examined, somewhat crt
cay, Spratts Patent Lightning Rods and that am
of opinion that constructed scientific principles For
combining durability cheapness, and efficacy, deem
equal and think SUPERIOR to other rod ever offered
for my inspection. Prof JAS. v. H. BLANEY.
AUGUSTA, (GA) November IL, 1850.
This will certify that have examined the Lightning
Rods Metallic Points, and IsoatiDg Attachments manu-
factured Mr. Sprat and regard them constructed in
conformity TO the general Of the electric hud and the
from the result of several which they submit
ted resist years the action of those causes
most likely to corrodc them. A. MEANS,
Prof Phys &c. Emory College, Ga, and Prof Chem and
Pharm. Medical College, Ga
The Lightning Conductors put up by Mr. Henry NJ Smith,
Of this city, the plan OF Mr. sprat appear to to be
very well devised and In point of mechanical construction
are the best have
hoped that the Of these Rods may become
general as an important auxiliary defence against danger
which must be regarded Of ordinary magnitude TO
which all buildings are liable. X. SlLlMAN, Jry
Prof of Chem in the University Of Louisville.
LOUISVILLE, January n, 1851.
All orders cft at ANDREW DUFFY's Stove Mandatory
7th street, will be promptly attended to- or at GEORGE
BELLS, Alexandria, Va, corner Of King and st. Asaph ss
1[u