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- Altitude-pressure tables based on the United States standard atmosphere
- This report is a revision of the altitude pressure tables of the United States standard atmosphere given in Technical Report No. 246 and the altitude range has been extended from 50,000 to 80,000 feet.
- Analysis of the Three Lowest Bending Frequencies of a Rotating Propeller
- From Summary: "The present report is a survey of the existing data for computing the bending frequency and a check on the dependability of the calculating methods."
- Annual Report of the National Advisory Committee for Aeronautics (21st). Administrative Report Including Technical Report Nos. 508 to 541
- 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, bibliographies, and financial report.
- The avocado : its insect enemies and how to combat them.
- Describes insect pests of the avocado in Florida, and methods for their control.
- Care of food in the home.
- Provides information about the causes of food spoilage and suggests methods for keeping foods in good condition.
- Coal-Mine Accidents in the United States, 1934
- Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
- Concentration of Copper Ores in North America
- From Introduction: "This bulletin summarizes and discusses copper-concentrator methods, results, and costs from 1929 to 1931 and includes an account of trends and developments in the industry."
- Contributions to the Data on Theoretical Metallurgy: [Part] 5. Heats of Fusion of Inorganic Substances
- From Introduction: "Examples of the use of the derived heat-of-fusion values in the application of thermodynamics to problems concerning metallurgical practice are not given here, but the reader is referred to the textbook of Lewis and Randall (454), in which the methods and types of calculations are adequately portrayed, and to the papers of Maier (469, 470, 471), in which the application of thermodynamic methods to various problems of metallurgical interest has been illustrated and discussed."
- Contributions to the Data on Theoretical Metallurgy: [Part] 6. A Revision of the Entropies of Inorganic Substances--1935
- From Introduction: "Moreover, a critical study of the existing vapor-pressure data made by the author (98) furnishes entropy of vaporization results suitable for obtaining approximate values of the entropies of a number of gases from the entropies of the solids or liquids. Consequently, it appears worth while at the present time to supplement the former publication, giving the new values now obtainable and making such revision in the older values as the data warrant."
- Cover Crops for Soil Conservation
- "Cover crops are crops sown or planted in thick stands for the purpose of protecting and enriching the soil.... That the use of cover crops is a most efficient means for preventing soil erosion and increasing soil fertility is well known; yet this practice is not nearly so widely and extensively followed as it should be. The kinds of cover crops that should be used and the method of utilizing them to the best advantage varies in different regions, according to climatic conditions but almost everywhere cover cropping in some form can be profitably followed." -- p. 1. The bulletin considers cover crops as either legumes or non-legumes.
- Dairy farming for beginners.
- Presents the factors to consider when deciding whether to start a dairy farm. Discusses markets, feed, capital, buildings, herd selection, record-keeping, and labor requirements.
- Experiment Station Record, Volume 73, July-December, 1935
- Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, and bibliographies. Name and subject indexes start on page 897.
- The farm garden.
- A guide to starting and cultivating a farm garden.
- The Flora of the New Albany Shale: Part 1. Diichnia Kentuckiensis, a New Representative of the Calamopityeae
- Abstract: A new genus of the Cycadofilicales, Diichnia, is described from the New Albany shale, of late Devonian age, in central Kentucky. The one known species, which is based on stem material showing internal structure, belongs in the family Calamopityeae. Foundation for the generic segregation is seen in the double leaf truce of the genotype, D. kentuckiensis, in contrast with the originally single trace in other known representatives of the family.
- Geology and Fuel Resources of the Southern Part of the San Juan Basin, New Mexico: Part 2. The Mount Taylor Coal Field
- From introduction: The present report describes the general geology and the economic resources of the [Mount Taylor Coal] field. The area adjoining this on the west was mapped by Sears; the area adjoining on the north was mapped by Dane.
- Geology and Fuel Resources of the Southern Part of the San Juan Basin, New Mexico: Part 3. The La Ventana-Chacra Mesa Coal Field
- From abstract: This report describes the geology and coal deposits of an area including about 1,000 square miles in southeastern San Juan, northwestern Sandoval, and northeastern McKinley Counties, in northwestern New Mexico.
- Geology and Mineral Resources of the Butler and Zelienople Quadrangles, Pennsylvania
- From abstract: This report is one of a series of publications on the geology and mineral resources of the Appalachian Plateaus. The areas described are the Butler and Zelienople quadrangles, which together include about 450 square miles in Butler, Beaver, and Lawrence Counties, western Pennsylvania.
- Geology of the Coastal Plain of South Carolina
- From abstract: The Coastal Plain of South Carolina extends from the Atlantic Ocean inland a distance ranging from 120 to 150 miles to the Fall Line, where it adjoins the Piedmont province. It includes an area of more than 20,000 square miles, or nearly two-thirds of the State, whose total area is 30,981 square miles, of which 494 square miles is water. The geographic divisions of the Coastal Plain are the marine coastal terraces, or "low country", which stand less than 270 feet above sea level, and the Aiken Plateau, the High Hills of Santee, the Richland red hills, and the Congaree sand hills.
- Geology of the Monument Valley-Navajo Mountain Region, San Juan County, Utah
- From abstract: The Monument Valley-Navajo Mountain region is part of the Colorado Plateau and includes about 1,100 square miles in San Juan County, southeastern Utah, lying between the San Juan and Colorado Rivers on the north and the Utah-Arizona State line on the south. Included in the region are Navajo Mountain, the Rainbow Natural Bridge, and a part of the picturesque Monument Valley.
- Geomorphology of the North Flank of the Uinta Mountains
- From introduction: The geologic record of the Tertiary period in the Green River Basin of southwestern Wyoming consists, in a broad way, of two quite different parts. The history of the first part, lasting through the Eocene epoch and perhaps on into the early Oligocene, was recorded in a thick series of sedimentary rocks of fluviatile and lacustrine origin. The history of the second part was recorded chiefly by successive stages of stream planation and stream trenching, but also in part by fluviatile sedimentation and, in certain localities, by glacial deposits. The first part of the record is virtually continuous, though its interpretation is by no means simple and obvious. The second part of the record is distinctly fragmentary, and the evidence the fragments provide is difficult to evaluate and to integrate.
- Ground-Handling Forces on a 1/40-Scale Model of the U. S. Airship "Akron"
- This report presents the results of full-scale wind tunnel tests conducted to determine the ground-handling forces on a 1/40-scale model of the U. S. Airship "Akron." Ground-handling conditions were simulated by establishing a velocity gradient above a special ground board in the tunnel comparable with that encountered over a landing field. The tests were conducted at Reynolds numbers ranging from 5,000,000 to 19,000,000 at each of six angles of yaw between 0 degree and 180 degrees and at four heights of the model above the ground board.
- Homes for birds
- Describes various types of birdhouses, where to place them, how to maintain them, and how to protect them against enemies of birds.
- Laying Out Fields for Tractor Plowing
- Revised edition. "Tractor plowing usually requires methods of laying out the land different from those followed when plowing with horses and an ordinary plow. Farmers plowing with a tractor for the first time are often at a loss for the most satisfactory methods of laying out their fields.... This bulletin describes the more common methods recommended by farmers who use tractors for plowing. Among these will be found methods suited to laying out fields of different shapes." -- p. ii
- Limitations of the Pilot in Applying Forces to Airplane Controls
- Measurements were made to determine the relative maximum forces a pilot can exert on the controls of an airplane with the view of obtaining systematic data upon which to base the location of controls within the cockpit and the design of the control surfaces. A cockpit model of generous proportions, capable of being rotated to any attitude, was built with the location of the control stick and rudder pedals adjustable over a wide range of positions with respect to the seat. Besides measurements of maximum forces obtainable with various control locations and with the pilot in several attitudes, estimates of forces within the range normally encountered in flight were made to gain an indication of the accuracy of estimating control forces.
- The Locoweed Disease
- Revised edition. "Loco weeds are poisonous plants that have caused heavy losses of horses, cattle, and sheep in some parts of the West and Southwest. Three plants are known definitely to be locoes, a few others are probably injurious, and some suspected ones are harmless. The loco plants, their distribution, characteristics, and effects upon animals eating them, are described in this bulletin. Illustrations of the plants and of poisoned animals accompany the descriptions." -- p. ii
- Making American cheese on the farm for home consumption.
- Provides detailed, step-by-step instructions for making American cheese at home.
- Making and using cottage cheese in the home.
- Describes methods, ingredients, and equipment used for making cottage cheese at home. Includes several recipes.
- The Mammals and Life Zones of Oregon
- From introduction: "Summary of the life zones and mammals of Oregon with emphasis on providing reliable information on the management of wildlife. Importance for identifying those species which are state and national assets, and those species of less value or destructive habits."
- Metal-Mine Accidents in the United States During the Calendar Years: 1933-34
- Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
- Microscopic Structure and Concentratability of the Important Iron Ores of the United States
- Outline of Problem: "This paper covers a survey of 19 ores collected from seven of the more important iron-ore districts of the United States and is a contribution by the ore-dressing section of the United States Bureau of Mines to general research program on iron and steel being conducted by the Bureau."
- Mineral Deposits of the Ruby-Kuskokwim Region Alaska
- From Abstract: "The following report is essentially a description of the mineral deposits that have been found in this region and of the status of mining in 1933."
- Mineral industry of Alaska in 1934
- From Introduction: "The value of its mineral resources has long been recognized as a matter of concern in the welfare of every nation, and all wise governments almost from time immemorial have taken steps to find out about, utilize, and safeguard such of these natural resources as lie within their own boundaries or to acquire rights in those they need that lie outside those boundaries. Obviously one of these lines concerns itself with the record of present performance-how much of the different mineral commodities is the country at present producing, where does this production come from and what are the facts as to the current developments in the industry? To answer some of these questions authoritatively is part of the work of the Alaskan branch of the Geological Survey, and answers to those questions for the year 1934 are given in the accompanying report."
- Mineral Resources of Alaska: Report on Progress of Investigations in 1934
- A report about the potentials and resources available in regards to Alaska's mineral industry.
- Notes on the technique of landing airplanes equipped with wing flaps
- "The proper landing of airplanes equipped with flaps, although probably no more difficult than landing without them, requires a different technique. The effects of flaps on the aerodynamics characteristics of a wing are given and, with the aid of figures and diagrams, a detailed comparison of the glide and landing of an airplane with and without flaps is made. The dangers attending improper execution and the importance of such factors as air speed fuselage attitude, glide-path angle, and control manipulation, upon all of which a pilot bases his judgement, are emphasized" (p. 1).
- Phosphate Rock Near Maxville, Philipsburg, and Avon, Montana
- From abstract: This paper gives the results of a resurvey of certain areas in Montana to which renewed interest has been directed by the development recently of a market for crude phosphate rock in British Columbia, nearby.
- Preparation of eastern grapes for market.
- Describes the harvesting, packing, and handling of eastern grapes for the market. Discusses the leading production sections, the commercial varieties, inspection, packaging, and loading.
- Present Guides for Household Buying.
- Provides suggestions for buying materials for the household, including food, clothing, cleaning equipment, appliances, and other items.
- Pressure Distribution Over an Airfoil Section With a Flap and Tab
- Report presents the results of wind tunnel tests made in the NACA 7 by 10-foot wind tunnel of a Clark Y airfoil with a flap and an inset tab. The pressures were measured on both the upper and lower surfaces at one chord section. Calculations were made of the normal-force and pitching-moment coefficients of the airfoil section with flap section with tab, and the normal-force and hinge-moments coefficients of the tab alone.
- Quarry Accidents in the United States During the Calendar Year 1934
- Report published by the U.S. Bureau of Mines which is a compilation of accidents in quarries located in the United States with data regarding the number and kinds of accidents as well as information about the mining operations (e.g., number of men employed, kinds of quarries, amount of work performed, etc.).
- Report of the Chief of the Forest Service: 1936
- Annual report from the U.S. Department of Agriculture Forest Service describing activities of the organization, expenditures and receipts, and a discussion of other relevant topics for the fiscal year.
- The Richey-Lambert Coal Field, Richland and Dawson Counties, Montana
- From abstract: The Richey-Lambert coal field is an area of about 900 square miles in Richland and Dawson Counties, eastern Montana, along the divide between the Missouri and Yellowstone Rivers. In this region only flat-lying continental rocks occur near the surface. About 300 feet of the Lebo shale member and about 930 feet of the coal-bearing Tongue River member of the Fort Union formation, of Eocene age, are exposed in the area. Deposits of terrace gravel at two levels in the field are tentatively correlated with the gravel on the Cypress Hills, Saskatchewan, which has been assigned to the Oligocene by the Canada Geological Survey, and with the Flaxville gravel, of upper Miocene or Pliocene age.
- The Rosebud Coal Field, Rosebud and Custer Counties, Montana
- From abstract: The Rosebud coal field, named from Rosebud Creek and the village of Rosebud, includes an area of about 1,050 square miles and forms a very small part of the subbituminous and lignite coal fields of eastern Montana and Wyoming and the western part of the Dakotas. It is an irregularly bounded tract lying south of the Yellowstone River in eastern Rosebud County and western Custer County and measures 50 miles from east to west and 28 miles from north to south. It adjoins the Forsyth coal field, on the west, the Ashland coal field, on the south, and the Miles City coal field, in part, on the north.
- Sampling and Examination of Mine Gases and Natural Gas: A Revision of Bulletin 42
- Revision of a report by the U.S. Bureau of Mines which described experiments performed in Pittsburgh, Pennsylvania to study mine gases. According to the foreword: "Much of the material is reprinted on the following pages in its original form, and changes have been made only where manifestly necessary. Laboratory methods have been brought up to date. Some types of apparatus described in Bulletin 42 have now become obsolete and newer designs are described instead" (p. 1).
- Sampling Mine Gases and Use of the Bureau of Mines Portable Orsat Apparatus in Their Analysis
- Report describing the sampling of mine gases an the use of the Bureau of Mines Portable Orsat Apparatus in order to keep people safe during mine disasters.
- Saving livestock from starvation on southwestern ranges.
- Describes methods for preventing livestock starvation due to drought or overstocking on ranges in the southwestern United States.
- Sponge-Iron Experiments at Mococo
- From Forward: "This bulletin covers one phase of the program of the Metallurgical Division of the Bureau of Mines on the direct production of iron from its ores. Another phase of this program has been covered in Bulletin 391, Microscopic Structure and Concentratability of the Important Iron Ores of the United States, by S. R. B. Cooke. Methods of iron-core concentration will be discussed in future bulletins."
- Spring-sown red oats.
- A guide to growing and harvesting spring-sown red oats in the southern half of the United States.
- Status of Wing Flutter
- "This report presents a survey of previous theoretical and experimental investigations on wing flutter covering thirteen cases of flutter observed on airplanes. The direct cause of flutter is, in the majority of cases, attributable to (mass-) unbalanced ailerons. Under the conservative assumption that the flutter with the phase angle most favorable for excitation occurs only in two degrees of freedom, the lowest critical speed can be estimated from the data obtained on the oscillation bench" (p. 1).
- Stoping Methods and Costs
- Report presenting a study of stoping methods and costs and summarizing the data obtained in earlier publications and those obtained during investigations in the field that apply particularly to stoping.
- Tank tests of three models of flying-boat hulls of the pointed-step type with different angles of dead rise - NACA model 35 series
- From Summary: "The results of tank tests of three models of flying-boat hulls of the pointed-step type with different angles of dead rise are given in charts and are compared with results from tests of more conventional hulls. Increasing the angle of dead rise from 15 to 25 degrees: had little effect on the hump resistance; increased the resistance throughout the planning range; increased the best trim angle; reduced the maximum positive trimming moment required to obtain best trim angle; and had but a slight effect on the spray characteristics. For approximately the same angles of dead rise the resistance of the pointed-step hulls were considerably lower at high speeds than those of the more conventional hulls."