Confeaaed a Morder. ST. LOUIS. April 3. A special .to the Post - Dispatch from Pnxlco, Mo., says: Oliver Logan, William Burg, "Neph" S'ewart and Taylor Hicks have acknowledged that, they killed John Sullivan, whose mysterious death at Thatcher's switch, ascribed to Whiti Caps. They have given bonds to appear for a preliminary hearing next Saturday. There Is considerable excitement over tho crime.