The freeman. (Fremont [Ohio]) 1849-1850, 1849-12-15

circuit was formed and the galvanc waves flowing
from the poles of the Pittsburgh battery Tin case
there be two) came from Pittsburgh to Cincinnati
3O31 miles before either wave could reach the
magnet
The question to be decided is this: Did the mag
net respond at the moment the waves united in il :?
or not until after the two waves had gone entirely
round the circuit and had come up to the pole of
the Pittsburgh battery opposite the one from which
it emanated? =?
Having made the connection, the two pens re-
corded thirty beats of the clock, the with the
short local circuit, the other with circuit drawn
from Pittsburgh
I'd Experiment-Th Pittsburgh battery was
now taken off the line. the wires were united in
Pittsburgh and the battery in Cincinnati was en-
ployed. The circulation of the positive wave was
as follows: From the positive poN of the battery
in the O'Rey Office Cincinnati by one wire to the
Observatory, to the back screw of standing pen,
from metallic handle of pen to receiving magnet
No. l ; thence by continuation of the main wire to
Pittsburgh, back to Observatory by second wire
through receiving magnet No 2, to the ground !;
thence by ground to negative pole of main battery
in Cincinnati
Receiving magnet No. l, was first caused to op-
erat the local of variable pen, and thereby beats of
the clock were recorded by standard and variable
pens. Here the variable pen driven by cir
cult 607 miles in length, provided adopt the
theory that both waves must unite in the magnet
to move it-for although the magnetwas only one
mile from the positive pole of the battery it was
606 miles from the negative pole.
Sd OBSERVATION-DISCLOSURES No 2, only the var;-
able pen was now driven by receiving magnet No.
2. This magnet was only one mile from the mega
tive pole of the battery. while it was by the wire
circuit COG miles from the positive pole. Thirty
beats of the clock were recorded by the combi-
nation
4th Experiment-The circuit being the same as
before the wire coming from Pittsburgh was fast
ened to the back screw of the standard pen, and
through pen handle to receive magnet No. 2, and
thence to ground. and by ground to battery Re-
ceiving magnet No l first drove the variable pen
and thereby beats were recorded by the standard
and variable pens.
This done, receiving magnet No drove the va
riabe pen and another series of thirty beats were
recorded
The experiments were further varied, and many
more were performed which will be elsewhere re-
ported We now present the results
In the first experiment with Pittsburgh battery,
receiving magnet 3031 miles from the battery, va
riahe pen fell behind standard pen after all cor
rectons. BY an interval equal to O0206. This is
almost absolutely identical with the result reached
on the 18th inst rs.----
In experiment No. 2, with receiving magnet No.
l, one mile from the position pole of the Cincinnati
battery, and 6O6 miles from negative pole of the
same battery, variable pen followed standard pen
bv 0O2o5, result agreeing with the former to
within one ten honsnndth of second In the
fourth experiment with receiving magnet No 2, va
riahe pen followed standard O.02O7
These results accord exactly with those reported
from the experiments of the 18th, which were as
follows: .-..-...
Variable pen fell behind standard, on first
trial, sO0204
3D. O02O9
Sd, oO2O4
4th, s.- O.O2I9
5th, -. .4...-... O.O213
9th, ... 0.O21S
From all these experiments we reach the follow
ing remarkable conclusions:
] st. In case there be two oalvanic waves ema-
mating from the opposite poles of battery, neither