NEW YORK (AP) — A two-day rally in the stock market came to an end Thursday afternoon when an account of the Federal Reserve's last meeting revealed a split between bank officials over how long the Fed should keep buying bonds to support the economy. The Dow Jones industrial average and the Standard & Poor's 500 index treaded water for much of the day, then slid into the red around 2 p.m. Eastern, after the Fed released the minutes from its December meeting. The Dow ended with a loss of 21.19 points at 13,391.36.