Perhaps the facts most astounding and most real are never communicated by man to man.
Each took turns at this unconscious game and probably thought he or she communicated with the other.
When the connecting string is held taut and sounds, such as those of ordinary speech, are produced in front of one of the membranes, pulses corresponding to the fluctuations of the atmospheric pressure are transmitted along the string and communicated to the other membrane, which in its turn communicates them to the air, thus reproducing the sound.
A subscriber desiring a connexion pressed the key and communicated his own number and that of the wanted subscriber to the operator in attendance on the call-wire.
On the 26th of October 1868 he communicated to the Paris Academy of Sciences, almost simultaneously with Dr P. J.