At 3:15 p.m., the Dow Jones industrial average was down 74.95 points, or 0.46 percent, to 16,271.5, the S&P 500 lost 14.94 points, or 0.78 percent, to 1,907.09 and the Nasdaq Composite dropped 53.62 points, or 1.15 percent, to 4,590.01. China's foreign ...