Collected experimental papers by Heinrich Hertz, in an authorized English translation by Daniel Evan Jones, published by Macmillan in 1893. The experiments and papers discussed here date to 1888. The archive link supplies OCR text; the apparatus illustrations are not reproduced.
Cited passages: Hertz, Electric Waves (1893 translation), VII, pp. 108–109; VIII, pp. 125–127; Hertz, Electric Waves, VII, pp. 107–108; Introduction, pp. 9–12: retrospective limitations; Hertz, Electric Waves, VIII, pp. 125–127 and 135–136: preparations and controls.