Willis O'Brien made some early shorts utilizing his unique concept of special effects, but it was this film, The Lost World, that made his vision first come to life so to speak. O'Brien makes the lost world full of dinosaurs that seemingly do everything. They eat, fight, move, and generally live on screen. The film is a fairly good adaption of Doyle's book, with Doyle even having a cameo in the film. A raging professor named Professor Challenger, played with gusto by Wallace Beery, says that dinosaurs live on a plateau somewhere off in the Amazon. He is disbelieved by all concerned, and he, with the help and support of a rich adventurer, a cynical zoologist, a newsman, and a daughter of a lost professor on a previous journey, sets out to prove that dinosaurs do indeed exist on Earth still. The film has a nice, quick pace and is very entertaining. Beery, Lewis Stone, and Bessie Love all do fine jobs acting. The film has a new marvelous score to go with its silent action. Best of all...the film boasts the special effects of O'Brien's genius. A fine, fine film.