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Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses
From Significance and value of Analyses of Coal: "The analyses published in this report cover samples of coal collected in many different parts of the country with unusual care by experiences men, in such manner as to make them representative of extensive beds of coal."
Date:
1913
Creator:
Lord, N. W.
Object Type:
Report
System:
The UNT Digital Library
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples
From Introduction: "This volume contains the descriptions of the samples whose analyses are published in the preceding volume, Part I of this bulletin. The descriptions have been compiled from the notebooks of the persons who collected the samples, have been condensed from accounts given in published reports of the United States Geological Survey, or have furnished by the collection themselves. Inasmuch as the descriptions represent the work of many persons during a period of six years, and inasmuch as they were recorded under widely differing conditions, they necessarily vary in fullness detail."
Date:
1913
Creator:
Lord, N. W.
Object Type:
Report
System:
The UNT Digital Library
An Example of Intensive Farming in the Cotton Belt
"This paper is descriptive of the improvement of an area of poor land by growing ordinary field crops under a system of farm management which aims at the incorporation of liberal amounts of organic matter in the soil as the chief factor in maintaining fertility and increased crop yields -- a practice which can not be too frequently brought to the attention of farmers. This system has produced greater returns to the farmer who practices it than any other system in use in his locality and will serve as an object lesson to many small farmers in all parts of the country." -- p. 2
Date:
1913
Creator:
Crosby, M. A.
Object Type:
Pamphlet
System:
The UNT Digital Library