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out of nitrate of cellulose, on account of their inflammable nature, which, as demonstrated by the recent fire in Cleveland, is a source of serious danger. (The American Projectionist, New York 33/669).
The photographic sensibility of latent images is the subject of a comprehensive study by Mr. J. Slater Price. F. R. S. (Science et Industrie Photograph ique 35/344)
A very interesting article describes the aerating system in use in the Parisian Cinema « America Theater » a system which makes it possible to warm or cool the air as desired and thus to maintain an agreeable temperature. This removes one of the main causes of the cinema dead season. (La Cinematographic Francaise, Paris 36/352).
At the Gaiety Theatre of New York, the Fox Film Co. has made a public and successful experiment in a new type of film on 70 mm. ribbon. Thanks to the ampler field of vision, the illusion of depth on the flat screen is more accentuated than in the case of films of normal dimensions. (Film-Kurier , Berlin 369358).
A highly interesting article develops Prof. Xeugebauer's suggestion on the classification of the chromatic sensitivity of ortho-chromatic layers. (Phot. Industrie, Berlin 36/362).
A technical article is devoted to the study of the different means of rendering sound films silent, turning silent films into sound films and of modifying sound films. (American Cinematographer, Hollywood 36/363).
An optical compensation mechanism for moving projections by means of annular prisms is the subject of a study published in the Photographische Industrie. (Berlin 36/366).
A Californian engineer has invented an apparatus which he has patented as the Osciographoscope » by means of which the heart-beats are recorded on a film. It is stated that photographs of the heart taken directly by means of this apparatus reveal the slightest functional irregularitie. The exhibition of films obtained by this means enable doctors to observe the functioning of the heart with greater precision than by the stethoscope, which merely renders the sound of the beats more audible. (The American Projectionist , New York).
Dr. LUCIANO de FEO — Editor and Responsible Manager.
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