HOIBART TOWN. There is no alteration in our grain market prices since our last ; meat is looking up, the last importation of sheep from Port Phillip realised 25s. a head, and it is really a treat to see the fat beef lately imported from that colony. — Colonial Times. Return of grain and flour imported at the port of Hobart Town, during the week ended 16th August, 1842, inclusive — Nil. Return of grain and flour exported from the port of Hobart Town, during the week ending 16th August 1842 ,inclusive — Wheat, 100 bushels ; flour, 37 tons.