Sherlock Holmes in the Great Murder Mystery considered a lost film. Sherlock Holmes in the Great Murder Mystery Sherlock Holmes in the Great Murder Mystery is a 1908 American silent film directed by an unknown director. The film was released on 27 November 1908 and is an adaptation of Edgar Allan Poe's short story "The Murders in the Rue Morgue" (1841), which is considered the first detective story, though the plot was altered to include Arthur Conan Doyle's detective Sherlock Holmes instead of Poe's C. Auguste Dupin. Dr. Watson makes his film debut here, though the actors playing Holmes and Watson are unknown, as the rest of
Dupin cyclide Dupin cyclide In mathematics, a Dupin cyclide or cyclide of Dupin is any geometric inversion of a standard torus, cylinder or double cone. In particular, these latter are themselves examples of Dupin cyclides. They were discovered by (and named after) Charles Dupin in his 1803 dissertation under Gaspard Monge. The key property of a Dupin cyclide is that it is a channel surface (envelope of a one-parameter family of spheres) in two different ways. This property means that Dupin cyclides are natural objects in Lie sphere geometry. Dupin cyclides are often simply known as "cyclides", but the latter term is