Sir William Crookes has published accounts of striking experiments and observations with D.
Sir William Crookes had already suggested in 1892 in the Fortnightly Review (February 1892) that such an application might be 1 Nuovo cimento, series iii.
The earliest communications were carried on by means of "raps," or, as Sir William Crookes calls them, "percussive sounds."
1871; republished with other papers by Crookes, under the title of Researches on the Phenomena of Spiritualism (1874-1876).
Crookes in 1860, may also be noted.