Ann Arbob, May 8, 1846. Tlio nominal price of Wlieat through llio week has been GO to 65 cents : but the news by the "Cambia," just arrived, it is supposed will advance prices a little. In Buffalo, May 6, Wheat was at 80 cents, and Michigan Flour at $3,75. London, April 18. The demand for Wheat has improved since the sailing of the Great Western. LivEnrooL, April 18. Indian Corn, to-day, 1 and 2d per 480 lbs dearcr than on this sea'night. On the 17th English wheat 2d per 70 lbs dearer. Canadian Flour ingood demand at an improvement of 6d per bbl. Indian corn stil! moving oiTfreely into hands of English and Irish buyers - fully supporting previous quotations. A cargo of American Wheatsold 7s per 70 lbs, anda few hundred bbls. U. S. flour at 26$ per bbl - only sales to-day in bond. We quote U. S. sweet Flour free 32a 33 s 6d. Sour 21s a 24 s6d. Indian corn 480 lbs. 3 s Sd a 4 s.