Daily American telegraph., 1852-10-20
Protection from Lightnin9,

TINE undersigned being the duly appointed Agent Of
NaRop MArugAcroRI coyingtcn, Kentucky, bsgs to offer
these superior Rods Of Carbonized Annsaled
Iron With zinc Professors and Eectropcsve elements
combined in their manufacture; thus rendering them equal
copper conductors They are in tenfeet lengths with
brassscrsw oonnsctng joints an entire
frame buildings ALSO glass isoaters of novel and inge
noui construction, afented forming lock; the whole
twelve inches long surrounded at the base with three
lar negative magnets which the power extra
most fearful Thunderstorm embrace the entire persc
ton Of science up to the present te the whole cons
ting the most magnificent and perfect silent conductor ever
Safety has not been compromised by aordng these
celent at such low rates the greatest attention has
been given to their construction 20 as to BE- readily attached
The astonishing power of the In discharg
Ing the air Of elements has been clearly demon
by the Eectrometer when unmagnetised 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
These being secured by double letters pa
liable by purchasing Of those who are not authorised or
who are substituting inferior limitations. All agents duly
appointed can show their Have god rods or
none. CHARLES w. HEfDON,
Washington City.
chemical reagents to spras Patent Points for Lightning
Rods and that the results Of these experiments convinoe
that they will resist the action Of atmospheric causes and
thereby preserve the extremity SHARPE condition most e
senta protection against lightning The reagents used
dunn common sat acetic acid suphuric acid and hydro
chlorc acid. With the first, there action the
metal with the several acids there very sg-a fact
sufficient to show that atmospheric influences would have
sensible effect. -.
JOHN LECoNTE, Prof. Of Nat Phil ct Chem.
UNIVERSITY Ga, October s, 1850.
The Lightning Conductors Of Mr. aprat, offered to me,
well calculated to perform the Office for which they
Intended Yours truly, Prof R0BT PETER.
LEXINGTON KY, February 20, 1885,
CHICAGO, September 3, 1851
This may certify that have examined, somewhat crih
caly James spratts Patent Lightning Rods and that
of opinion that 1t Is constructed scientific principles For
combining durability eheapness, and efficacy deem II
equal and think SUPERIOR TO any other rod offered
for my inspection. Prof JAS. v. z. BLANEY.
AUGUSTA (GA) November IL, 1850.
This will certify that have examined the Lightning
Rods Metallic Points, and Isoating Attachments, manu-
featured by Mr. Spratt and regard them constructed In
ormy general laws Of the electric hud and the
metallic compound constituting the Points, as promising,
result of several tests TO which they submit
ted TO resist for years action Of those
most likely to corrode them. A. MEANS,
Prof Phys &c. Emory College, Ga and Prof Chem. and
Pbarm. 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 ever seen
II Il to be hoped that the may become
which be regarded Of ordinary magnitude, to
which all buildings are liable r. sItIMAN, Jr,
Prof Of Chem. in the University Of Louisville.
LOUISVILLE, January II, 1851.
All orders LEFT ANDREW DUFPY'S Stove Mandatory,
7th street. will be promptly attended to- or at GEORGE
BELLS Alexandria, Va Of King and St Araph SITS
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