Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Environmental Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 30721 - 30750 of 30754

Full-Text Articles in Entire DC Network

Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman Jan 1942

Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman

Yale School of the Environment Bulletin Series

No abstract provided.


The Feeding Habits Of Gambusia Affinis Affinis, With Special Reference To The Malaria Mosquito, Anopheles Quadrimaculatus, A.D. Hess, Clarence M. Tarzwell Jun 1941

The Feeding Habits Of Gambusia Affinis Affinis, With Special Reference To The Malaria Mosquito, Anopheles Quadrimaculatus, A.D. Hess, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

The viviparous top minnow, Gambusia affinis affinis (Baird and Girard), has for many years been considered an important predator of the immature stages of mosquitoes. Various field workers have reported on the value of this species in controlling both anopheline and culicine mosquitoes, but few detailed studies have been made. Probably the most detailed of these has been that of Hildebrand (1925). His investigations were made during the summers of 1921-24 in the vicinity of Augusta, Ga., with the subspecies G. affinis holbrooki. Employing the common dipper method, he compared the densities of anopheline and culicine larvae and pupae in …


Penetration Of The Walls Of Wood Cells By The Hyphae Of Wood-Destroying Fungi, Phimister Proctor Jr. Jan 1941

Penetration Of The Walls Of Wood Cells By The Hyphae Of Wood-Destroying Fungi, Phimister Proctor Jr.

Yale School of the Environment Bulletin Series

No abstract provided.


The Working Environment And The Health Of Workers In Bituminous Coal Mines, Non-Ferrous Metal Mines, And Nonferrous Metal Smelters In Utah, The Division Of Industrial Hygiene; National Institute Of Health; U.S. Public Health Service, The Utah State Board Of Health Jan 1940

The Working Environment And The Health Of Workers In Bituminous Coal Mines, Non-Ferrous Metal Mines, And Nonferrous Metal Smelters In Utah, The Division Of Industrial Hygiene; National Institute Of Health; U.S. Public Health Service, The Utah State Board Of Health

Elusive Documents

No abstract provided.


Asterolecanium Variolosum Ratzeburg, A Gall-Forming Coccid, And Its Effect Upon The Host Trees, Thaddeus Parr Jan 1940

Asterolecanium Variolosum Ratzeburg, A Gall-Forming Coccid, And Its Effect Upon The Host Trees, Thaddeus Parr

Yale School of the Environment Bulletin Series

No abstract provided.


Disturbance Of Forest Soil Resulting From The Uprooting Of Trees, Harold J. Lutz Jan 1940

Disturbance Of Forest Soil Resulting From The Uprooting Of Trees, Harold J. Lutz

Yale School of the Environment Bulletin Series

No abstract provided.


The Comparative Ability Of The Bob-White And The Ring-Necked Pheasant To Withstand Cold And Hunger, Paul L. Errington Mar 1939

The Comparative Ability Of The Bob-White And The Ring-Necked Pheasant To Withstand Cold And Hunger, Paul L. Errington

Other Publications in Wildlife Management

The native Bob-white (Colinus virginianus) and the introduced Ring-necked Pheasant (Phasianus colchicus torquatus) may both, on occasion, suffer severe winter mortality over much of their common range in north-central United States. Their habitats often overlap, although the Pheasant has a greater cruising radius and an ability to live in a more open type of country than the Bob-white. In given localities they also live upon much the same kinds of winter foods.

The scope of this paper is not intended to cover the ecological adjustments of Pheasants or of Bob-whites to their winter environment so much …


Ua37/23 Whas Broadcast No. 75, Whas, Western Kentucky University, Earl Moore Jan 1938

Ua37/23 Whas Broadcast No. 75, Whas, Western Kentucky University, Earl Moore

WKU Administration Documents

Script for weekly WKU broadcast on WHAS radio. This show included Earl Moore, Ellen Jeffries, Judson Griffin, Mary Marks and Merle Lamon discussing conservation of natural resources.


Adjustment Of Irrigation Charges, Uintah Indian Project, Utah, United States Department Of Interior Jan 1938

Adjustment Of Irrigation Charges, Uintah Indian Project, Utah, United States Department Of Interior

Elusive Documents

No abstract provided.


The Goldfields Water Supply : The True Story Of Its Origin, Unknown Jan 1938

The Goldfields Water Supply : The True Story Of Its Origin, Unknown

Archival Publications

No abstract provided.


Freestone County, Texas [Water Quality Survey Of Wells And Springs With Test Hole Data, 1936], Samuel F. Turner Jun 1937

Freestone County, Texas [Water Quality Survey Of Wells And Springs With Test Hole Data, 1936], Samuel F. Turner

United States Geological Survey: Water Reports and Publications

Introduction

The purpose of this survey was to obtain information concerning existing wells and springs and the quantity and quality of water they yield, and to put down test holes where additional information was needed.

This project was part of a statewide Works Progress Administration project known as a "Statewide Inventory of Water Wells," sponsored by the [Texas] State Board of Water Engineers. The Division of Ground Water of the United States Geological Survey cooperated in the technical direction of the project and the Bureau of Industrial Chemistry of the University of Texas furnished laboratory space and equipment and supervised …


The Influence Of Soil Profile Horizons On Root Distribution Of White Pine (Pinus Strobus), Harold J. Lutz, Joseph B. Ely Jr., Silas Little Jr. Jan 1937

The Influence Of Soil Profile Horizons On Root Distribution Of White Pine (Pinus Strobus), Harold J. Lutz, Joseph B. Ely Jr., Silas Little Jr.

Yale School of the Environment Bulletin Series

No abstract provided.


Bird Studies Of The Bear River Marshes, Ernest W. Parkinson May 1933

Bird Studies Of The Bear River Marshes, Ernest W. Parkinson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The establishment of the Bear River Bay Bird Refuge has created for the state of Utah an immense and valuable biological field, a veritable paradise for naturalist and sportsman alike. The naturalist wants a place to study wild life and the sportsman desires game. With the proper control of open seasons on wild fowl the hunting instinct and incentive for the sport should be satisfied for the sportsman. To the naturalist this region will open up bountiful treasures of knowledge that is to be gained only by intense and prolonged scientific study.


First Annual Report On The Geology Of The State Of Maine, Lucius H. Merrill, Edward H. Perkins Jan 1930

First Annual Report On The Geology Of The State Of Maine, Lucius H. Merrill, Edward H. Perkins

Maine Collection

First Annual Report on the Geology of the State of Maine by Lucius H. Merrill, State Geologist and Edward H. Perkins, Assistant Geologist, Augusta, 1930.

Articles: Maine Granites / Report on Feldspar Quarries Visited Aug. 21-24, 1929 / Coal / Petroleum and Natural Gas in Maine / The Minerals of Maine / Minerals of Maine Index, By Mineral Names / Minerals of Maine, Index by Towns / Minerals Found at Bennett's Quarry Buckfield, Maine / List of Minerals Found at Newry, Maine / List of Minerals Found in Rumford, Maine / The Natural History of Maine Minerals (Perkins) / …


Outlet Pipes For Echo Dam, U.S. Department Of The Interior, Bureau Of Reclamation Jan 1929

Outlet Pipes For Echo Dam, U.S. Department Of The Interior, Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

Specifications, schedule, and drawing of outlet pipes for Echo Dam: Salt Lake Basin Project, Utah.


Balanced Needle Valves For Echo, Gibson, And Coolidge Dams, U.S. Department Of The Interior, Bureau Of Reclamation Jan 1928

Balanced Needle Valves For Echo, Gibson, And Coolidge Dams, U.S. Department Of The Interior, Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

Invitations for bids, schedule specifications, and drawings for balanced needle valves for Echo, Gibson, and Coolidge Dams.


Echo Dam And Relocated Union Pacific Railroad And Relocated Lincoln Highway Around Echo Reservoir, U.S. Department Of The Interior, Bureau Of Reclamation Jan 1927

Echo Dam And Relocated Union Pacific Railroad And Relocated Lincoln Highway Around Echo Reservoir, U.S. Department Of The Interior, Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

Specifications, schedules, and drawings from the Salt Lake Basin Project, Utah: Weber River Division. This record contains plans for the relocation of the Union Pacific Railroad and Lincoln Highway and its affect on Echo Dam.


Annual Report Of The Department Of Irrigation, Fiscal Year 1926-27, George Hardman, F. L. Bixby, W. L. Stockwell, United States. Department Of Irrigation Jan 1927

Annual Report Of The Department Of Irrigation, Fiscal Year 1926-27, George Hardman, F. L. Bixby, W. L. Stockwell, United States. Department Of Irrigation

Publications (WR)

Study of underground water in the Las Vegas Valley and the drainage of irrigated land in the Moapa Valley. F. L. Bixby was Senior Irrigation Engineer of the Irrigation Division of the Government Bureau of Public Roads.


A Study Of The Vegetation Of Northeastern Arizona, Herbert Christian Hanson Jan 1924

A Study Of The Vegetation Of Northeastern Arizona, Herbert Christian Hanson

University Studies (University of Nebraska) (1888–1984)

The State of Arizona is marked by a great series of cliffs that extend from the mouth of the Grand Canyon of the Colorado River in the northwestern part of the state southeastward into New Mexico. This line of cliffs, rising 1000 to 4000 feet above the desert plains forms the southwestern and southern boundary of the great physiographic province called the Colorado Plateaus. It is roughly circular and includes northeastern Arizona, northwestern New Mexico, western Colorado, and a large part of Utah. This province is subdivided by a number of deep canyons and high cliffs into numerous plateaus. The …


High Pressure Emergency Gates For Echo Dam, U.S. Department Of The Interior, Bureau Of Reclamation Jan 1923

High Pressure Emergency Gates For Echo Dam, U.S. Department Of The Interior, Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

Invitations for bids, schedule, specifications and drawings of high pressure emergency gates for Echo Dam.


Cocobolo, Samuel J. Record, George A. Garratt Jan 1923

Cocobolo, Samuel J. Record, George A. Garratt

Yale School of the Environment Bulletin Series

No abstract provided.


Bulletin 115 - The Value Of Windmills For Pumping Water In Western Australia, A. H. Scott Jan 1923

Bulletin 115 - The Value Of Windmills For Pumping Water In Western Australia, A. H. Scott

Bulletins 1 - 2999

It is surprising to note the dearth of up-to-date reliable information dealing with actual results of modern windmills, under working conditions, though literature on thousands of other subjects less important can usually be obtained.

In this bulletin there is presented a complete and accurate record of the amount of water pumped daily by a windmill, under actual working conditions, for a period of 14 months.


Grazing Lands In Utah, Washington Government Printing Office Jan 1920

Grazing Lands In Utah, Washington Government Printing Office

Elusive Documents

No abstract provided.


Bulletin No 81 - The Improvement Of Pastures With Notes On The Pasture Trefoils In Western Australia, E. A. Mann, D. A. Herbert Jan 1920

Bulletin No 81 - The Improvement Of Pastures With Notes On The Pasture Trefoils In Western Australia, E. A. Mann, D. A. Herbert

Bulletins 1 - 2999

Agriculture can be roughly divided for practical purposes into two large divisions, those of animal husbandry and vegetable husbandry. It is with the former that this pamphlet is chiefly concerned and its object is to contribute, it possible, in some small measure towards the problem of how to increase time stock carrying capacity of our natural pasture lands. it is unnecessary to dwell upon the importance of this question, especially in relation to the remarkable developments which are taking place in time wool-growing industry in the Southern and more coastal areas of Western Australia.


Prolonging The Cut Of Southern Pine Part I. Possibilities Of A Second Cut; Part Ii. Close Utilization Of Timber, Herman H. Chapman, Ralph C. Bryant Apr 1913

Prolonging The Cut Of Southern Pine Part I. Possibilities Of A Second Cut; Part Ii. Close Utilization Of Timber, Herman H. Chapman, Ralph C. Bryant

Yale School of the Environment Bulletin Series

Part I - Since 1907 the Yale Forest School has conducted the field workand instruction of the Senior class in the spring term in coopera-tion with lumber companies located in the southern states. Thecompanies which have extended this cooperation are:
1907, Missouri Lumber and Mining Co., Grandin, Missouri.1908, Kaul Lumber Co., Hollins, Alabama.1909, Thompson Brothers Lumber Co., Doucette, Texas.1910, Louisiana Central Lumber Co., Clarks, Louisiana.1911, Thompson Brothers Lumber Co., Trinity, Texas.
191~, Crossett Lumber Co., Crossett, Arkansas.

Part II - The lack of close utilization of yellow pine timber is apparenton many operations in the South. In the following discussionsome …


Irrigation Farming: A Handbook For The Proper Application Of Water In The Production Of Crops, Lucius M. Wilcox Jan 1907

Irrigation Farming: A Handbook For The Proper Application Of Water In The Production Of Crops, Lucius M. Wilcox

University of Nebraska-Lincoln Extension: Historical Materials

A handbook for the application of water in the production of crops.


Water: Its Inluence On Health And Disease, John Wilby Jan 1901

Water: Its Inluence On Health And Disease, John Wilby

Student and Lippitt Prize Essays

An insight into the health effects of water and diseases it may carry; provides alternative ideas and solutions for sanitizing.


Windbreaks, Fred W. Card Apr 1897

Windbreaks, Fred W. Card

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Includes the results of a survey of farmers in Nebraska, New York, Michigan, and a few other places, regarding the purpose and value of windbreaks.


The Rainfall Of Nebraska, G. D. Swezey, George A. Loveland Jun 1896

The Rainfall Of Nebraska, G. D. Swezey, George A. Loveland

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Covers the rainfall in Nebraska with respect to farming.

Includes:

Character of the precipitation

Amount of precipitation

Rainfall of the growing season

Number of rainy days

Variability of rainfall

Progressive changes in the rainfall

Monthly precipitation of all stations and locations in Nebraska from the earliest years to 1895

Average precipitation for Nebraska from the earliest years through 1895

Charts of normal precipitation--weekly, monthly, and annual


Report Of The Geologist, Erwin Hinckley Barbour Jan 1896

Report Of The Geologist, Erwin Hinckley Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

THE PROBLEM OF OUR SOILS AND SOIL MOISTURE.

The soil survey of the state, which was begun by the author in November of 1892, has progressed to the point where it might be considered finished. That is, one or more samples of soils have been taken from every distinct soil region in the state-in fact, most of the separate counties are represented, and mechanical analyses of many of these have already been made. However, in consideration of the size of our counties, the work will not be declared complete until each is represented in the state museum by soil prisms …