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                |  Reviews of silent film releases on home video.
 Copyright © 1999-2025 by Carl Bennett
 and the Silent Era Company.
 All Rights Reserved.
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                | Secrets of Nature(1922-1933)
 |  Contents: 19 films in the “Secrets of Nature” series. | 
        
          |  British Film Institute 2010 DVD edition
 Secrets of Nature (1922-1933), black & white, 200 minutes total, BBFC Certificate E.British Film Institute, unknown catalog number, UPC 5-035673-008614.
 One single-sided, dual-layered, Region 0 PAL DVD disc; 1.33:1 aspect ratio picture in full-frame 4:3 (720 x 576 pixels) interlaced scan image encoded in SDR MPEG-2 format at ? Mbps average video bit rate (capable of progressive scan upscaling to ? fps); Dolby Digital (AC3) 2.0 stereo sound encoded at ? Kbps audio bit rate; English language intertitles, optional English language subtitles; chapter stops; 36-page insert booklet; standard DVD keepcase; unknown suggested retail price.
 Release date: 19 July 2010.
 Country of origin: England
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          | This PAL DVD edition has been mastered from high-definition scans of archival film materials. The films are accompanied by music scores, with some films presented silent. Supplemental material includes a 36-page insert booklet. This is our recommended home video edition of these films. North American collectors will need a region-free PAL DVD player capable of outputting an NTSC-compatible signal to view this edition. 
              
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                | This 
                  Region 0 PAL DVD edition is available directly from . . . |   |  
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                | This 
                  Region 0 PAL DVD edition is available from BRITISH FILM ISTITUTE through . . .
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          | Other BRITISH FILMS of the silent era available on home video. |