Sunday's Post, [By Express.]
... arrived tbe mail from Flanders. Life, Oil. 28. N immenfe artillery for fiege is gone from Douay. The whole frontier of French Hainault is evacuated; all the l, army of Gen. Dumourier is arrived ; G* lli his army, commanded tneral Botirnonvitle, entered Quievrain the without finking a blow, and is now enca »iped St. Ghiflain. General Valence ocpP'es the banks the Meufe, and General thofe of th« ...