LIST OF ILLUSTRATIONS xi 



49. M. Riolle, Public Prosecutor in the Steinheil case ; 



wired from Paris to London by the Thorne- Baker 

 Telectrograph . . 106 



50. News photograph wired from Manchester to London 



of a railway accident at Staly bridge . . .107 



51. Apparatus used to record oscillograph work . . 109 



52. Oscillograph record of half-tone image with no 



capacity on line . ... no 



53. The same with capacity, showing the elongation and 



widening of the " teeth " . . . . no 



54. Section of a relief photographic film . . . .117 



55. Diagram of Belin's transmitter . . . . .118 



56. Photograph transmitted by M. Belin's Telestereo- 



graph, over an artificial line ..... 124 



57. Belin's apparatus for telegraphing line pictures . 125 



58. Diagram of wireless apparatus 130 



59. Diagram of Marconi's Electromagnetic Detector . 132 



60. Arrangement first used by the Author for the wireless 



transmission of pictures . . . . . 133 



61. Sketch of head and shoulders of a lady. Trans- 



mitted by wireless 135 



62. Diagram of the author's decoherer .... 136 



63. Quartz string and selenium cell arranged for re- 



ceiving and transforming up electrical oscillations . 138 



64. Sketch of the King transmitted by the author's 



wireless apparatus ....... 139 



