Daily American telegraph., 1852-08-24
Protection from Lightning.

,HE undersigned, being the duly appointed Agent Of
NaRoD MANurAcroRr Covington Kentucky, bsgs to offer
these superior Rods, Of Carbonized Anneaed
combined in their thus rendering them equal
copper conductors They arc In teneet lengths with
new style Of metallic paonte attachments, for brick
frame buildings also, glass isolaters OF novel and inge
mounted with sod platinum silver point, patentsd
twelve inches long, at base with anu
lar negative which s the to an Ok ira
most fearful Thunderstorm and embrace the entire perfeo
ton Of science to the present tme the whole constu
ting the most magnificent and perfect silent conductor ever
presented to the public
Safety not been compromised by aordng these ex.
ceent such low rates. the greatest has
given their construction to be readily attached
The astonishing Of the negative magnets in dscharg
ing opposite elements has been clearly demon
srated by the Eectrometer, when unmagnetized points
have shown but slight results though placed under the
conditions In fact they gather and silently discharge
electricity from tho atmosphere when you would scarcely
suspect any being present
tent you hereby cautioned against laying yourselves
liable by purchasing Of those who not authorized
nome nefSs'''>' 'N'' '''" ~ CHARLES ". HEYDoN,
Washington City.
do hereby certify that have app lied various powerful
Rods and hat he results of these experiments convince me
that they will resist the action Of atmospheric causes and
sena 70 gnnp The used
in the above experiments solution of chloride of
dum common sat acetc acid suphuric acid, and hydro
chlorc acid With the first, there action tho
metal with the several acids there very sgha fact
sufficient to show that atmospheric influences would have
no sensible effect.
JOHN LEcoNTE, Prof. of Nat. Phil. ct Chem
UNIVERSITY OF Ga, October s, 1850.
The Lightning Conductors of Mr. spratt offered to me,
well calculated to perform ths office for which they
intended. Yours, truly, Prof R0BT. PETER.
LEXINGTON, KY. February 90, 1850.
CHICAGO September q, 1850.
This may certify that have examined somewhat cri,
cay James Spratts Patent Lightning Rods and that am
opinion that 1t Is constructed scientific principles Fer
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 IL, 1860.
This will certify that have examined the Lightning
Rods Metallic Points and Isolatng Attachments,
conformity to the general laws the electric ud and the
metallic compound constituting the Points promising
from the result of several tests TO which they submit
ted to resist the action of those atmospheric
most likely to corrode them A. MEANS,
Prot. Phys. &c.. Emory College, Ga, and Prof Chem and
Pharm. Medical College, Ga.
The Lightning Conductors put up by Mr. Henry Smith,
Of this city, the plan Of Mr. spa appear to to DO
very well DEVISED and In point of mechanical construction,
are the best have seen.
1t to hoped that the Of these Rods may become
which must be regarded Of ordinary magnitude to
which all buildings are liable. II. SILIMAN, Jr.,
Prof of Chem. in the University of Louisville.
LOUISVILLE, January n, 1851
All orders left at ANDREW DUFFYS Stove Mandatory,
It'll street. will be promptly attended to; at GEORGE
BELLS Alexandria, Va corner Of King and st. Asaph SITS.
ap 14-n