Radioactivo: Poderoso Fertilizador y Estimulante Para La Vegetación. 
Banco del Radium [Banque du Radium, Paris]. Radioactivo: Poderoso Fertilizador y Estimulante Para La Vegetación [title from wrapper]. Barcelona: [Banque du Radium] and [R. Cumellas], . 8vo, 8 pp.; in Spanish, some translated from French, printed in green, with historiated initials, near fine.
Attractive art nouveau promotional booklet for radium soil enrichment, from a period of explosive popular interest in radium. The text compares the “therapeutic” action of radium in agricultural applications to those in human medical treatments—combating unknown “infirmities” and cultivating new vigor.
Published by a Spanish representative for the radio-agricultural firm Banque du Radium, Paris. BDR was established by a friend and sponsor of Marie Curie, the French industrialist Emile Armet de Lisle. Armet de Lisle also published the journal Le Radium.
Uncommon, we locate no other examples of Banque du Radium or Banco del Radium promotional materials in OCLC or the trade.