Daily American telegraph., 1852-11-03
Protection from Lightning.

VNHE undersigned, being the duly appointed Agent Of
MANUrAcrohY Covngton, Kentucky begs to offer
these superior Rods of Carbonzed Annealed
combined in their manufacture; thus rendering them equal
copper conductors They in teneet lengths with
new style Of metallic atente attachments for brick or
frame budings also, glass isoaters of novel and nge
with & asr naSS
twelve inches long, surrounded at the base with three ang
ordinary extent Of dchargng the opposite elements Of the
most fearful Thunderstorm, and embrace the entire perc
sysr
presented to the public.
Safety been compromised by aording these s1-
cellent rods at such low rates. the greatest has
been given to their construction to be realty attached
The astonishing power Of the negative in dscharg
strated by the Eectrometer when unmagnetsed points
have shown but slight results though placed under the
conditions In they gather and silently discharge
electricity from the atmosphere when you would scarcely
| suspect any being present. E.4 sr&
tent hereby cautioned against laying yourselves
LIABLE by purchasing Of those who not authorized
none. CHAKLES w. HEYDON,
Washington City.
do hereby certify that have app lied various powerful
Rods that the results these experiments
that they will resist the action of atmospheric causes
senai protection against lightning The reagents used
In the above experiments solution of chloride
common acetfc Buphur1c acid, HYDRO
chloric acid. With the first, there action the
metal with the several acids there very sgh-a fact
sufficient to show that atmospheric influences would have
no sensible effect. .
JOHN LECoNTE, Prof of Nat Phil. ct Chem
UNIVERSITY OF Ga, October 8, 1850.
The Lightning Conductors of MI Spratt offered to me,
well calculated to perform the office for which they
intended Yours truly, Prof R0BT. PETER.
/, LEXINGTON, XII, February 20, 1850
CHICAGO September 8, 1851
This may certify that have examined somewhat criti
cay James Spratts Patent Lightning Rods and that
of opinion that 1t 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. " 2. BLANEY.
AUGUSTA, (GA) November IL, 1850.
This will certify that have examined the Lightning
Rods, Metallic Points, and Isolatng Attachments,
conformity to the general laws Of the electric fuid and the
metallic compound constituting the Points promising,
from the result of several tests TO which they submit
ted resist for years 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 Mr. Henry Smith,
of this city, the plan of Mr. Sprat appear to to be
very well devised and point mechanical construction
the best have
1t is TO be hoped that the Of these Rods 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 q, 1851
All orders left ANDREW DUFFYS Stove Mandatory,
It'll street, will be promptly attended to; or at GEokGE
BELLS Alexandria, ya Of King and St Asaph
ap 4-u