The police of New York are inclined to think that they have the elusive "Jack the Ripper" in their clutches. A woman was ripped up the side March 19 and a big knife was left sticking in the wound. The knife was traced to one Frank Castellano, an Italian barber, whose record has been under the police search-light. They have discovered that until recently he was a fireman on board one of the trans-Atlantic steamers, and there are several circumstances connected with the case that incline the police to believe that Castellano is none other than the mysterious "Jack the Ripper" who has kept the fallen women of London in terror for the past two years. Some go so far as to say that the prisoner will be found to be identical with the mysterious man who accompanied "old Shakespeare" to the East River Hotel on the night of her murder and for whose death "Frenchy the Greek" is now serving a term in the State prison. Captain Doherty of the Fifth Precinct squad is much elated over the capture, and says that he will make every effort to secure a complete account of Castellano's travels and operations during the past few years.