Les Applications de la Télégraphie Sans Fil

First edition, in French. Full title Les Applications de la Télégraphie Sans Fil Traité Pratique pour la Réception des Signaux Horaires et des Radiotélégrammes Météorologiques.
Original editorial blue cloth with white lettering on front board and spine, cover just lightly worn with negligible tiny loss at head, paper with mild age-yellowing as usual with few pencil underlinings, overall a very good copy, tight and clean. Scarce early book in French on wireless telegraphy, with 61 figures. This was one of the earliest books devoted to the time signals transmission and broadcasting of meteorological information, however it covered broadly the wireless technology in theory and in practice. Scarce in first edition.
Prima edizione, in francese. Copertina editoriale in tela blu con scritte bianche al piatto e dorso, leggeri segni di usura con minima mancanza al dorso, alcune sottolineature a matita, nel complesso in condizioni piu' che buone. Rara prima edizione di quest'opera sulla telegrafia senza fili e sue applicazioni alla trasmissione di segnali di tempo campione e dati meteorologici.