The Collaborative International Dictionary of English v.0.48:

Photographone \Pho*tog"ra*phone\, n. [See Photograph;
   -phone.]
   A device, consisting essentially of an electric arc and a
   camera, by which a series of photographs of the variations of
   the arc due to sound waves are obtained for reproduction by
   means of a selenium cell and a telephone.
   [Webster 1913 Suppl.]