More signs of a weakening global economy weighed on crude-oil prices on Monday, kicking off a weak start to the quarter for the commodity. U.S. stock futures, however, pointed to a firmer start for Wall Street. Crude for November delivery fell 31 cents, or 0.3%, to $91.86 a barrel on the Globex division of the New York Mercantile Exchange. China manufacturing activity contracted a second straight month in September, while Japan's quarterly Tankan survey showed weakening sentiment for big manufacturers. Brent oil, Europe's benchmark, fell 33 cents to $112.01 a barrel on ICE Futures London. Among other contracts, natural gas for November delivery rose 6 cents, or 1.7%, to $3.38 per million British thermal units. Gasoline for November delivery was flat at $2.92 per gallon. Heating oil for the same month fell 1 cent, or 0.5%, to $3.14 a gallon. Marketwatch
