Daily American telegraph., 1852-07-10
Protection from Lightning.

THE undersigned, being the duly appointed Agent Of
sPRArrs ELECTRIoAN ELECTRO LIGHT
MSaRoD MxNUEAoroRY Coyingon Kentucky begs to oier
These superior Rods Of Sprawted Carbonized Anneaed
combined In their msnucture thus rendering them equal
20 ooppe as condueto They In teneet lengths with
~ brass screw connecting joints an entire
ne" syie OF metallic paented attachments for brick or
frame buildings also, glass solaers, Of novel and inge
NOUS constfneuon Spetened0 forming lock the whole
mouneu Win sohd platinum silver point (patented)
twelve inches long ut the three ang
lar negative magnets which possess the power to extra
most fearful Thunderstorm and embrace the entire perc
ton Of science up to the present tme the whole cons
ting the most magnificent and perfect silent conductor
presented TO the public. ft Nfsa $f&
Safety has been compromised by aording thsse ex
ceent rods at low rates the greatest attention has
been given to their construction TO be readily
The astonishing power Of the negative magnets in dscharg
ing the air of Its opposite elements has been clearly demon
strated by the Electrometer when unmagnetzed points
have shown but slight results though placed under the
conditions In fact they gather and silently discharge
electricity the atmosphere when you would scarcely
suspect any being present.
tent are hereby cautioned against laying yourselves
liable by purchasing Of those who not authorized or
who are substituting inferior limitations All agents duly
appointed can 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 sprats Patent Points for Lightning
that they will resist the action Of atmospheric causes and
thereby the extremity sharpa condition
senta protection against lightning The reagents used
in the above experiments solution of chloride of
dum common sal acetic acid suphuric acid and HYDRO
chlorc acid With the frst there action on the
metal with the several acids there very sga fact
sufficient to show that atmospheric influences would have
no sensible effect.
1I JOHN LECoNTE, Prof Of Nat Phf ct Chem
UNIVERSITY OF GA, October s, 1850
The Lightning Conductors Of Me- sprat offered to me-
are well calculated perform the ONCE Tor which they arc
LEXINGTON, KY, February 20, 1850.
CHICAGO, September g. 1850.
This may certify that have examined, somewhat ort
cally James Spratfs Patent Lightning Rods and that
opinion that Ia 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. W. BLANEY.
AUGUSTA, (GA.) November IL 1850.
This will certify that have examined the Lightning
Rods Metallic Points and Isolating Attachments,
fctured by Mr. Sprat and regard them constructed In
conformity the general laws OF the electric ud and the
metallic compound constituting the Points, promising
from the result Of several tests to which they submit
ted to resist for the action of those atmospheric
most likely to corrode 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 Smith
of this city, the plan of Mr. Sprat appear to to be
very we'll devised and in point of mechanical construction
the best have ever seen.
1t 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. r. SILIMAN, Jr,
Prof Of Chem. in the University of Louisville,
LOUISVILLE January 27, 1851.
All orders left at ANDREW DUFFYs Stove Mandatory
BELLS Alexandria, Va corner of King and ST. Asaph SITS
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