Our emphasis. This text is the principal element of program notes for the Robert-Houdin theater, today available at France’s Bibliothèque nationale (Théâtre Robert–Houdin: Grandes Matinées de Prestidigitation, program, n.d., Bibliothèque nationale de France, Arts du spectacle department, 8-RO-17411), which can be dated to 1907, according to Jacques Malthête (personal e-mail to André Gaudreault on July 19, 2012).
The same document is quoted without precise mention of the source by Bernard Chardère (Lumières sur Lumière [Lyon: Institut Lumière/Presses universitaires de Lyon, 1987], p. 128) and by Jacques Deslandes (Le boulevard du cinéma à l’époque de Georges Méliès [Paris: Éditions du Cerf, 1963], pp. 99-101), which gives the date 1912. Note also that the word polyorama is used to describe the double or triple magic lantern, according to Laurent Mannoni (personal e-mail to André Gaudreault in February 2006): “The ‘polyorama,’ in France in the late 19th century, was used to describe double or triple lanterns which produced dissolving views.”