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  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Year: 1920
Abstracts of Current Decisions on Mines and Mining: May to August, 1919

Abstracts of Current Decisions on Mines and Mining: May to August, 1919

Date: 1920
Creator: Thompson, J. W.
Description: Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
Contributing Partner: UNT Libraries Government Documents Department
The aerodynamic properties of thick aerofoils suitable for internal bracing

The aerodynamic properties of thick aerofoils suitable for internal bracing

Date: 1920
Creator: Norton, F H
Description: The object of this investigation was to determine the characteristics of various types of wings having sufficient depth to entirely inclose the wing bracing, and also to provide data for the further design of such sections. This type of wing is of interest because it eliminates the resistance of the interplane bracing, a portion of the airplane that sometimes absorbs one-quarter of the total power required to fly, and because these wings may be made to give a very high maximum lift. Results of the investigation of the following subjects are given: (1) effect of changing the upper and lower camber of thick aerofoils of uniform section; (2) effect of thickening the center and thinning the tips of a thin aerofoil; (3) effect of adding a convex lower surface to a tapered section; (4) effect of changing the mean thickness with constant center and tip sections; and (5) effect of varying the chord along the span.
Contributing Partner: UNT Libraries Government Documents Department
Airplane performance as influenced by the use of a supercharged engine

Airplane performance as influenced by the use of a supercharged engine

Date: May 1920
Creator: De Bothezat, George
Description: The question of the influence of a supercharged engine on airplane performance is treated here in a first approximation, but one that gives an exact idea of the advantage of supercharging. Considered here is an airplane that climbs first with an ordinary engine, not supercharged, and afterwards climbs with a supercharged engine. The aim is to find the difference of the ceilings reached in the two cases. In the case of our figure, the ceiling from 25,000 feet is increased to 37,000 feet, the supercharging maintaining the power only up to 20,000 feet. This makes, in comparison with an engine without supercharging, an increase of about 50 percent.
Contributing Partner: UNT Libraries Government Documents Department
The Alfalfa Caterpillar

The Alfalfa Caterpillar

Date: 1920
Creator: Wildermuth, V. L.
Description: "The alfalfa caterpillar is one of the most destructive insect pests of alfalfa in the southwestern United States. In 1914 a complete report of the life history of this caterpillar, together with the methods of control, was published. The present paper contains additional information relating to methods of controlling the pest by the management of irrigation water as well as a brief account of its natural history, and is intended to meet the ever-increasing demands of ranchers and others for assistance in protecting their alfalfa against these "green worms." -- p. 3
Contributing Partner: UNT Libraries Government Documents Department
Alsike Clover

Alsike Clover

Date: 1920
Creator: Pieters, A. J.
Description: Report discussing the distribution and cultivation of the leguminous crop alsike clover, which grows primarily in the northeastern United States. Topics discussed include soil requirements, seeding, uses, and insect enemies and diseases.
Contributing Partner: UNT Libraries Government Documents Department
The altitude laboratory for the test of aircraft engines

The altitude laboratory for the test of aircraft engines

Date: 1920?~
Creator: Dickinson, H C & Boutell, H G
Description: Report presents descriptions, schematics, and photographs of the altitude laboratory for the testing of aircraft engines constructed at the Bureau of Standards for the National Advisory Committee for Aeronautics.
Contributing Partner: UNT Libraries Government Documents Department
Aluminum and its light alloys

Aluminum and its light alloys

Date: 1920?~
Creator: Merica, Paul D
Description: Report is a summary of research work which has been done here and abroad on the constitution and mechanical properties of the various alloy systems with aluminum. The mechanical properties and compositions of commercial light alloys for casting, forging, or rolling, obtainable in this country are described.
Contributing Partner: UNT Libraries Government Documents Department
Angoumois Grain Moth

Angoumois Grain Moth

Date: 1920
Creator: Back, E. A. (Ernest Adna), 1886-
Description: Report discussing the Angoumois grain moth, a pest now common in the United States which is destructive to corn, wheat, and other grains. Topics include the moth's life cycle, infestations, and methods of controlling it, including prompt thrashing and fumigation.
Contributing Partner: UNT Libraries Government Documents Department
Annual report of the National Advisory Committee for Aeronautics (4th).administrative report including Technical Reports nos. 24 to 50

Annual report of the National Advisory Committee for Aeronautics (4th).administrative report including Technical Reports nos. 24 to 50

Date: 1920
Creator: unknown
Description: Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, expenditures, problems, recommendations, and a compilation of technical reports produced.
Contributing Partner: UNT Libraries Government Documents Department
Annual report of the National Advisory Committee for Aeronautics (5th).administrative report including Technical Reports nos. 51 to 82

Annual report of the National Advisory Committee for Aeronautics (5th).administrative report including Technical Reports nos. 51 to 82

Date: 1920
Creator: unknown
Description: Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, expenditures, and a compilation of technical reports produced.
Contributing Partner: UNT Libraries Government Documents Department
Approved Explosion-Proof Coal-Cutting Equipment

Approved Explosion-Proof Coal-Cutting Equipment

Date: 1920
Creator: Ilsley, L. C. & Gleim, E. J.
Description: Report discussing description of equipment tested to prevent explosions when using coal-cutting explosions and provides explanation of fire damp protection theory.
Contributing Partner: UNT Libraries Government Documents Department
Aspen Borer and How to Control It

Aspen Borer and How to Control It

Date: 1920
Creator: George Hofer, 1863-
Description: "This bulletin gives methods of controlling the aspen borer or reducing its damage to a minimum. It is based on extensive studies made in the Pikes Peak region of Colorado, but the data in general apply to all regions of the United States where the poplars are native. The introduced Lombardy poplar is very seldom injured, but the commercial cottonwood of the Mississippi Valley seems to be the only native species of poplar which is at all immune to the attack of this insect." -- p. 2
Contributing Partner: UNT Libraries Government Documents Department
Beautifying the Farmstead

Beautifying the Farmstead

Date: 1920
Creator: Mulford, Furman Lloyd, b. 1869
Description: Report giving practical ways for families to beautify farmsteads. Contains sections on design, locations of buildings, walkways, driveways, lawns, trees and other plants.
Contributing Partner: UNT Libraries Government Documents Department
The beef calf : its growth and development.

The beef calf : its growth and development.

Date: August 1920
Creator: Sheets, E. W.
Description: Outlines the fundamental principles of cattle raising and breeding for beef production.
Contributing Partner: UNT Libraries Government Documents Department
Better seed corn.

Better seed corn.

Date: September 1920
Creator: Hartley, C. P. (Charles Pinckney), 1870-
Description: Describes how to grow and store quality seed corn.
Contributing Partner: UNT Libraries Government Documents Department
Bibliography of Petroleum and Allied Substances, 1917

Bibliography of Petroleum and Allied Substances, 1917

Date: 1920
Creator: Burroughs, E. H.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bomb trajectories

Bomb trajectories

Date: January 1, 1920
Creator: Wilson, Edwin Bidwell
Description: The report is a mathematical treatise dealing with the trajectories of bombs of high terminal velocity, dropped from a great altitude.
Contributing Partner: UNT Libraries Government Documents Department
The Brown-Spot of Corn with Suggestions for Its Control

The Brown-Spot of Corn with Suggestions for Its Control

Date: 1920
Creator: Tisdale, W. H. (Wendell Holmes), 1892-
Description: "The purpose of this bulletin is to familiarize the farmer with the appearance, distribution, nature, and economic importance of the brown-spot of corn and to offer certain helpful suggestions for its control.... High temperature in combination with high humidity favors the development of the disease. For this reason the damage is greater in the South, where high temperatures prevail throughout the summer and the rainfall is rather heavy. The disease is caused by a minute fungus parasite.... Careful field sanitation, crop rotation, and seed selection aid in controlling the disease." -- p. 2
Contributing Partner: UNT Libraries Government Documents Department
Calculation of low-pressure indicator diagrams

Calculation of low-pressure indicator diagrams

Date: January 1, 1920
Creator: Kemble, E C
Description: Report develops a fundamental conception and partial application of a method for calculating the pressure-volume relationships to be expected for any given engine design. It outlines a method of computing and interpreting low-pressure indicator cards.
Contributing Partner: UNT Libraries Government Documents Department
California Oak Worm

California Oak Worm

Date: 1920
Creator: Burke, H. E. (Harry Eugene), 1878-1963 & F. B. (Frank Barnes) Herbert, 1890-
Description: "The live oak and the valley oak, which are characteristic of the landscape of central California, often are stripped of their leaves by a dark-striped worm which is the young stage of a light-brown moth. Besides stripping the trees of their leaves and making the owner think that they are dead, the worm crawls on lawns, walks, fences, and into houses, swimming pools, etc., becoming a general nuisance.... This bulletin describes and illustrates the worm and its work, tells about its habits and natural enemies, and explains the methods of control." -- p. 2
Contributing Partner: UNT Libraries Government Documents Department
Carbureting conditions characteristics of aircraft engines

Carbureting conditions characteristics of aircraft engines

Date: January 1, 1920
Creator: Tice, Percival S
Description: Tests were conducted at the altitude laboratory erected at the Bureau of Standards for the National Advisory Committee for Aeronautics to determine the changes in engine performance with changes in atmospheric temperature and pressure at various levels above the earth's surface, with special reference to (a) the variables affecting the functioning of the carburetor and (b) the changes in performance resulting from variables in the carburetor itself. This report constitutes a concise statement of the difficulties to be encountered in this branch of carburetion.
Contributing Partner: UNT Libraries Government Documents Department
Carpet Grass

Carpet Grass

Date: 1920
Creator: Piper, Charles V. (Charles Vancouver), 1867-1926
Description: Report discussing carpet grass, which is an unappreciated but highly valuable grass that grows in permanent pastures on sandy soils, especially in the Coastal Plain of the southern United States. Discussion focuses on growing conditions and pasture practices.
Contributing Partner: UNT Libraries Government Documents Department
Casing Troubles and Fishing Methods in Oil Wells

Casing Troubles and Fishing Methods in Oil Wells

Date: 1920
Creator: Curtin, Thomas
Description: From introduction: "The Bureau of Mines, in its researches aimed to prevent wastes and to increase efficiency in oil-well practice, has investigated the matter of casing troubles and fishing methods. The results of the investigation are set forth in this paper."
Contributing Partner: UNT Libraries Government Documents Department
Castrating and Docking Lambs

Castrating and Docking Lambs

Date: 1920
Creator: Bedell, G. H. (George Harold), 1890- & Baker, E. W. (Elbert Watkins), 1879-
Description: Report discussing the advantages of castrating and docking lambs to promote health and growth. Procedures for castration and docking are discussed in detail.
Contributing Partner: UNT Libraries Government Documents Department
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