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in subjects: "insecticides"

Insecticide for Boll-Weevils.

Patent for boll-weevil insecticide with novel method of compounding. Arsenic and baking soda are combined with wood ash to create a dust which kills the insects as an inhalent instead of needing to be consumed by the insects in order to be effective.

Date: November 1, 1921

Creator: Koenig, Philipp

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Process of Treating Wood.

Patent for less expensive chemical wood treatment that will not leach out, will make wood more durable, and preserve wood for multiple uses including marine construction.

Date: August 23, 1921

Creator: Chandler, Asa C. (Asa Crawford), 1891-1958

Item Type: Patent

Partner: UNT Libraries Government Documents Department

[Letter from W. R. Walton to Mr. D. W. Kempner, March 27, 1925]

Letter from W. R. Walton to Mr. D. W. Kempner discussing alternative methods of extermination, including mowrah meal, lime water, ammonium sulfate, and Bordeaux mixture, after the application of corrosive sublimate failed to control the infestation of earth worms on Kempner's land.

Date: March 27, 1925

Creator: Walton, W. R.

Item Type: Letter

Partner: Rosenberg Library

[Letter from W. R. Walton to Mr. D. W. Kempner, March 23, 1927]

Letter from W. R. Walton to Mr. D. W. Kempner discussing the re-infestation of earth worms on Kempner's land, which may be a result of migration or eggs hatched after the application of insecticides, with hopes that further investigation from Mr. E. V. Walter can help define and solve the issue.

Date: March 23, 1927