Daily American telegraph., 1852-04-20
Protection from Lightning.

rJHE undersigned being the duly appointed Agent Of
SPRATTS ELECTRICIAN ELECTRO METALLURGsT LIGHT
NSeRoD MAsuFAoToRr Covngton, Kentucky, begs to offer
these superior Rods Of Spiral Carbonized Anneaed
combined in their thus rendering them equal
copper conductors They are in eneet lengths with
new stye Of metallic patented Attachments for brick Or
frame buildngs also glass solaers Of novel and inge
nons % forming 1sr ndn mt
twelve inches long, surrounded at the base with angu
lar negative which the power to an extra.
most fearful thunderstorm and embrace the entire pertec
ton Of science up to the present tme the whole constu
ting the most magnificent and perfect silent conductor
presented to the public.
ceent such low rates the greatest attention has
given their constructions TO be readily attached
The astonishing of the negative magnets in discharg
ing the air of its opposite elements has been clearly demon
by the Electrometer 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
table, by purchasing of those who not authorized
substituting inferior limitations All agents duly
appointed show their certificates Have good rods or
none. CHARLES ". HEYDoN,
Washington City.
do hereby certify that have app lied various powerful
chemical reagents spratts Patent Points for Lightning
Rods and that the results of these experiments convince
they will resist the action of atmospheric causes and
to protection against light ming The reagents used
in the above experiments solution OF chloride OF So
dunn, Salt) acid
chlorc acid With the first, there action the
metal with the several acids, there sga fact
sufficient show that atmospheric influences would have
JOHN LEcoNTE Prof of Nat Phil. ct Chem.
UNIVERSITY OF GA, October 8, 1850.
The Lightning Conductors Of Mr. Spra offered to me,
we'll calculated to perform the Office for which they
intended. Yours, truly, Prof R0BT. PETER
LEXINGTON, KY, February 20, 1850.
CHICAGO, September s. 1850.
This may certify that have examined, somewhat cr.
caly James spratts Patent Lightning Rods and that
Of opinion that Ii il constructed scientific principles For
combining durability, cheapness and efficacy, deem it
equal and think SUPERIOR to any other rod offered
for my inspection. Prof JAS v. y. BLANEY.
Augusta, (GA) November H. 1850
This will certify that have examined the Lightning
Rods Metallic Points and Isolating Attachments,
by Mr. sprat and regard them constructed in
conformity to the general laws Of the electric ud and the
metallic compound constituting the Points, promising,
from 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 &C., Emory College, Ca 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. Spra appear TO to be
very well devised and in point of mechanical construction
are the best have
II is to be hoped that the Of these Rods may become
general important auxiliary defence against danger
which must be regarded of ordinary magnitude to
which all buildings are liable. X. sIIIMAN, Jr.,
Prof Of Chem. in the University of Louisville.
LOUISVILLE, January ~ 1851.
All orders left at ANDREW DUFFYS Stove Mandatory
eth street, will be promptly attended to; at GEORGE
BELLS Alexandria, Va, Of King and St. Asaph s
ap lift