Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-09-11
Protection from Lightning.

T,HE undersigned, being the duly appointed Agent Of
NNaRoD MAsUyAcroRr covington Kentucky begs to offer
these superior Rods of Carbonixed Anneaed
Iron with Zinc Protectors Electroposive elements
combined in their manufacturer thus rendering them equal
copper conductors They are in teneet lengths with
new style Of metallic atented attachments for brick or
frame buildings ALSO glass solaters OF novel ana inge
mounsa With ss Platinum Vsr paensd
long, at the base with three angu
of the opposite elements the
most fearful Thunderstorm and embrace the entire perfe
ton Of science up to the present time the whole constu
ting the most magnificent and perfect silent conductor eyer
presented to the public
Safety has not been compromised by aordng these ex
ceent rods at such low rates the greatest attention haa
been given to their construction TO be readily attached
The astonishing of the negative In disharg
ing the air of its opposite elements has been clearly demon
srated 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 would scarcely
suspect any being present
tent you hereby cautioned against laying yourselves
LIABLE by purchasing Of those who not authorized
none. CHARLES w. HEYDON,
Washington City.
do hereby certify that have app lied various powerful
Rods and that The me-
that they will resist the action of atmospheric causes and
ane e e
In the above experiments were solution OF chloride OF
dium Common SALT acec acid guphuric acid, and hydro
chloric acid. With the first, there action the
meta with the several acids there very slg-a fact
sufficient to show that atmospheric influences would have
no sensible effect.
JOHN LEooNTE, Prof of Nat. Phil. etChem.
UNIVERSITY OF Ga, October s, 1850.
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, KY, February 20, 1850
CHICAGO, September 3, 1850.
This may certify that have examined, somewhat critk
ally James Spratts Patent Lightning Rods and that am
opinion that it is constructed scientific principles For
combining durability cheapness, and efficacy, deem 1t
equal and think SUPERIOR to any other rod offered
for my inspection. Prof JAS. v. 2. BLANEY.
AUGUSTA, (GA) November H. 1850.
This will certify that have examined the Lightning
Rods Metallic Points, and Isolating Attachments, manu-
featured by Mr. Sprat and regard them constructed In
conformity to the general laws Of the electric ud and the
from the result tests to which they submit
ted to resist for the action Of those causes
most likely to corrode them. A. MEANS,
Prof Phys &C., Emory College, Ca. and Prof Chem ana
Pharm., Medical College, Go.
The Lightning Conductors put up by Mr. Henry Smith,
Of this city the plan Of Mr. Sprat appear TO TO be
very well devsed In point Of mechapcal construction,
are the best have ever seen,
1t is TO be hoped that of these Rods may become
general as On important auxiliary defence against danger
which be regarded Of no ordinary magnitude to
which ali buildings are liable. r. sILIMAN, Jr,
Prof Of Chem. In the University Of Louisville.
LOUISVILLE, January n, 1851.
All orders left at ANDREW DUFFYS Stove Mandatory
7th street. will be promptly attended to; at GEORGE
BELLS Alexandria, Va corner Of King and st. Asaph ss
an 14-t