From 1897 to 1913, Sagar Mitchell and James Kenyon shot hundreds of short vignettes of public life—pedestrian traffic, street parades, rugby games, seaside crowds—in the industrial north of England as well as Scotland, Ireland, and Wales. Some 800 nitrate negatives of these films were discovered in 1994 and preserved by the University of Sheffield and the British Film Institute. This 71-minute survey made between 1900 and ’06 gives a marvelously vivid and concrete sense of British society at the turn of the 20th century, and though the films are primarily of historical interest, a haunting score by brothers Klive and Nigel Humberstone heightens the pleasure of being plunged into a lost world.