At first he conceived of having a harp at one end of the wire, and a speaking-trumpet at the other, so that the tones of the voice would be reproduced by the strings of the harp.
If this tiny disc can vibrate a bone," he thought, "then an iron disc might vibrate an iron rod, or at least, an iron wire.
For exactly three months after his interview with Professor Henry, he continued to plod ahead, along both lines, until, on that memorable hot afternoon in June, 1875, the full TWANG of the clock-spring came over the wire, and the telephone was born.
Watson, who was at the lower end of the wire, in the basement, dropped the receiver and rushed with wild joy up three flights of stairs to tell the glad tidings to Bell.
As though the very stars in their courses were working for this young wizard with the talking wire, the Centennial Exposition in Philadelphia opened its doors exactly two months after the telephone had learned to talk.
A wire had been strung from one end of the room to the other, and while Bell went to the transmitter, Dom Pedro took up the receiver and placed it to his ear.
He listened and learned what even he had not known before, that a solid metallic body could take up from the air all the countless varieties of vibrations produced by speech, and that these vibrations could be carried along a wire and reproduced exactly by a second metallic body.
Sir William Thomson and his wife ran back and forth between the two ends of the wire like a pair of delighted children.
A long, stumbling fall, accelerated by a sudden increase of wind in the sails, ensued, and Lerumie, vainly trying to catch his footing, fetched up against the three strands of barbed wire on the lee rail.
Even Lerumie, variously lacerated by the barbed wire, did not scowl nor mutter threats.
Bukawai saw them go, and he mumbled through his rotting face, swearing a great oath that he would yet have the three fat goats, the new sleeping mat, and the bit of copper wire