The effect of that undiminished voice, calm, slow, resonant, issuing from that disintegrating vapor, stirred the hair on the captive Frenchman's neck and scalp.
"Vibration, _mon cher monsieur_," said he, "is everything.

According to the researches of the Ecole Polytechnique, in Paris--no doubt you, yourself, have studied there, _n'est-ce pas ?_--vibration of the first octave from 2 to 8 per second, give us no sense-impression.

From the fourth to the fifteenth octave, 16 to 32,768 per second, we get sound.
The qualities of the 16th to the 24th are--or have been, until I investigated--quite unknown.

The 25th to the 35th, 33, 554, 432 to 34, 859, 738, 868 vibrations per second, give us electricity.

Thence to the 45th, again unknown.
"The 4th to the 48th give us heat.