[PrevPage] [Next] [INDEX ]  Volume 1   5 Apr. 1876    Page 95  [Source] [ NOTES ]
    that the point P had vibrated in + out of M occasioning an intermittend current.
    I can now recognize by ear a vast difference in the quality of the sounds produced by the intermittent + undulatory currents.
    In the case alluded to above so long as the plumbago never left the mercury I could hear not only the pitch of the sound, but could recognize the quality or timbre of Mr. Richardson's voice. When the spark appeared at P I could hear it is true, the pitch of Mr. Richardson's voice + that very loudly, but the quality had gone.
    The sound was no different in quality from that produced by my Reed arrangement.

  1. When the pencil P (Fig 4 page 89) was deeply immersed the pitch + timbre of Mr. Richardson's voice were loudly audible at z buy every now + then a deafening sound would
[PrevPage] [Next] [INDEX ]  Volume 1   5 Apr. 1876    Page 95  [Source] [ NOTES ]