Discusses the results of a study of the hibernation of the corn earworm in Chatham County, Georgia from 1930 to 1933. The study was conducted in an effort to understand seasonal occurences of earworm infestation.
Describes the problems ranchers face when pricklypear grows in grazing areas in the central Great Plains and the steps that should be taken to control its growth.
A guide to making vinegar at home. Includes a description of the materials used and the process, as well as the federal regulations governing the manufacture and sale of vinegar in 1936.
Describes the yellow chapote tree that grows in southern Texas and Mexico, its uses and benefits, and the damage that the Mexican fruitfly causes to the tree.
Describes the damage that cabbage caterpillars can cause to plants, and provides the results of scientific research on insecticides to control the caterpillars in the southern United States.
Describes the problems posed by sheep-killing dogs and their habits. Discusses control methods, including dog-proof fencing and law enforcement. Provides suggestions for uniform state dog laws, and a summary of existing state dog laws.
Summarizes the results of several years of field investigations of the sugar-beet nematode. Describes its life cycle, host plants, causes of infestation, and methods of control.
This is a World War II-era technical manual for the 75mm Howitzer. It contains information on use, maintenance, assembly, and other aspects of this weapon.
Discusses the practice of growing black locust trees for profit in the timber industry as a method of erosion control and soil building. Provides suggestions for watering, weeding, insect and disease control, and marketing of seedlings.
Describes structural details of service airplanes used by the Army Air Corps, sufficient for personnel to perform inspection and maintenance of their equipment.
"This manual is designed as a text for the instruction of airship student pilots .... to give the knowledge of aerodynamics essential to the operation of [lighter than air aircraft]."(Page 2.)
This report discusses these topics: I. Principles of heat treating -- II. Heat-treating equipment -- III. General heat treatment of steel -- IV. Specific heat treatments for aircraft steels -- V. General heat treatment of aluminum alloys -- VII. Hardness testing -- VIII. Magnaflux inspection.
Describes the Prismatic Compass, M1918 and provides instructions for its operation, maintenance, and its functions in relation to various types of field artillery.
Provides a text and reference book covering the principles of orientation. Orientation is defined as "the accurate location of datum points and the establishment of lines of known length and direction".
Describes the life cycle of the sorghum midge, its history in the United States, the damage it can cause to plants, and the steps farmers can take to control the pest and its damage.
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