In what was certainly one of the most gruesome days in recent New York (subway) memory, four men were killed yesterday on the city's public transit system. In the morning a 22-year-old man was struck by a train while walking the L line tracks near Third Avenue, in the afternoon another was killed on the tracks of the A train near the Fulton St. station, and a third man was found wedged between a train and the platform at the Sixth Avenue L stop later at night. The fourth fatality was a sixtysomething male who was found unconscious and bleeding from the mouth at an elevated R station in Elmhurst, Queens. The police have not indicated any criminal or suspicious activity linked to any of the deaths. [NYP]