Patent for a new and improved ant trap. This design "relates to apparatus . . . in which a vessel having an open bottom, but closed top and sides, and containing a furnace for burning obnoxious substances, is projected into or made to form a close joint with the ground, and which has a fan or pump combined with it that causes the fumes from the furnace to enter the ant-holes in the ground. [They] have been . . . attended with so many disadvantages . . . [t]he object of [the] invention is to remove these defects . . . [it] shall be efficient, durable, and labor-saving" (lines 8-25).