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Dental Bite-Tray.

Description: Patent for a bite tray usable for an array of mouth sizes. The material provides better comfort in the mouth of the patient, as well as better comfort for the operator.
Date: March 30, 1915
Creator: Sanders, Mastin E.
Partner: UNT Libraries Government Documents Department

Improvement in Compounds for Destroying Worms in the Cotton-Plant.

Description: Patent for a method of "destruction of the cotton-worm, and this object is accomplished by sprinkling the plants on which the worm feeds with a solution of arsenic in water." (Lines 8-12) Includes instructions.
Date: June 30, 1874
Creator: Mitchell, Thomas W.
Partner: UNT Libraries Government Documents Department
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