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Flood-Gate.

Description: Patent for a flood-gate meant for use in mill-dams, races, and levees. Its intended use is to allow water to come to a certain height, and automatically release water once it gets past that point. When the water returns to a reasonable height, the gate automatically closes.
Date: December 26, 1893
Creator: Dean, Asa
Partner: UNT Libraries Government Documents Department

Insecticide

Description: Patent for a type of insecticide for cotton and vegetable plants. Particularly effective for use against the "boll-weevil" of cotton plants.
Date: May 26, 1903
Creator: Bourlon, Eugene A.
Partner: UNT Libraries Government Documents Department
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