I ran across this article awhile back and it is still not sitting well with me.
It is a wikipedia entry here: http://en.wikipedia.org/wiki/Charles_Wheatstone
If you scroll down to the section titled "Velocity of electricity" where it describes an experiment he conducted in the 1800's, maybe you can shed some light on some questions.
1) His experiment implies that electricity, travels from both ends to the middle. Conventional theory I believe states that electricity is the flow of electrons from one source to the other, here he uses two leyden jars at each end of the wire, and the terminal wires spark before the gap in the very center of the wire, indicating something flowing from both ends of the wire to meet in the middle.
If his claimed observation is true, is this evidence that our electron flow theory of electricity is incorrect?
2) The article states that from this experiment he measured a speed of 288,000 miles per second. And then states that in "today's electrodynamics is an impossible value", which isn't saying that he was wrong. I've heard Dollard say that longitudinal propogation is pi/2 * c, which would be close to this mans measurement.
If his measurement technique was not flawed, is this evidence that c is in fact NOT a limit to information transmission speed?