Middletown, Conn., Dec. 6.–A most daring robbery, together with an attempt to murder, was perpetrated in Durham, on Monday night last. The store of Messrs. Coe & Wadsworth was broken open by two villains, and considerable property carried off. A son of Mr. Wadsworth slept in a room over the store, accompanied by a large dog. He was aroused by the noise of the robbers, and seizing a musket at his bedside, pointed it out of the window, and fired at them. One of the robbers shot at him with a pistol at the same time; neither shot took effect. The pistol ball, however, struck within a short distance of Mr. Wadsworth’s head. He then descended the stairs with the dog, and on reaching the door, one of the villains knocked him down. A brief struggle ensued, during which the dog exerted his teeth and strength with great skill and some effect, when the robbers made their escape.