Portrait of a Killer: Jack the Ripper—Case Closed that a paper manufacture expert she hired asserts that reams of paper supposedly used by Jack the Ripper to write several letters to Scotland Yard and paper purchased by Sickert's mother bear the same small-press watermark. She also claims that there are matches in the cutter's marks, which are a result of the rough cutting of each quire (or small package) for packaging. A "quire" was usually of 24 sheets. Though Cornwell's book sold many copies, many Ripperologists and other critics argued that Cornwell's theory was far from persuasive. Critics also note that Cornwell has said that she did not
How a Mosquito Operates ... will be a 'release' for vaudeville next season by Mr. McCay. The film will be named "How a Mosquito Operates"." McCay made the drawings on translucent rice paper. The film came before the development of cel animation, in which animators draw on clear sheets of celluloid and lay them over static backgrounds. Thus, on each drawing McCay had to redraw the background, which appears to waver slightly due to the difficulty of reproducing it perfectly each time. McCay re-used some of the drawings to loop repeated actions, a technique he used once in "Little Nemo" and more extensively in