Life Sciences Commons^™

The Effects Of Oxygen, Carbon Dioxide, And Pressure On Growth In Chilomonas Paramecium And Tetrahymena Geleii Furgason, D.M. Pace, R.L. Ireland

Papers in Microbiology

The effects of oxygen, carbon dioxide, and pressure on animal organisms have been widely studied, but most of the investigations in this field concern chiefly the effects of extreme, especially high, atmospheric pressures on blood changes, respiration, length of life, etc., in Vertebrates.

Very few detailed observations have been made on the relation between oxygen tension or carbon dioxide tension and growth in Protozoa. The few investigations that have been carried out are concerned primarily with the effect of these gases on respiration although some observations have been made on the relation of aerobic and anaerobic conditions and growth in …

A Seven-Year Quantitative Study Of Succession In Grassland, J. E. Weaver, W. E. Bruner

Department of Agronomy and Horticulture: Faculty Publications

The study of plant succession has contributed more than any other single line of investigation to a deeper insight into the nature of vegetation. Earlier studies of succession, especially in grassland, were largely those of the primary sere. But with the utilization of the prairies for grazing, and the abandonment of submarginal land after a short period of cropping, numerous investigations of secondary successions were made. The earlier studies have been discussed by Clements (1916) in "Plant Succession." Sampson's plant succession in relation to range management appeared in 1919. Many of the more recent investigations of subseres in grassland and …

Extent And Longevity Of The Seminal Roots Of Certain Grasses, J. E. Weaver, Ellen Zink

Department of Agronomy and Horticulture: Faculty Publications

Grasses possess two distinct root systems. The primary or seminal root system begins development immediately upon the germination of the seed and consists of one to several main roots and their branches, the number varying with the species. The young plant is entirely dependent upon this primary root system for water and soil nutrients. Later, especially during the period of tiller production, a secondary or nodal root system develops from the lower nodes of the parent culm and from the tillers. The seminal roots are often designated as temporary in general texts and even in special books on grasses. Hitchcock …

The Plains Garter Snake, Thamnophis Radix, In Ohio, Roger Conant, Edward S. Thomas, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The announcement that Thamnophis radix, the Plains garter snake, occurs in Ohio and is not rare in at least one county, will surprise most herpetologists and students of animal distribution. Since the publication of Ruthven's monograph on the genus (1908), almost all authors have followed his definition of the range of this species, giving eastern Illinois as its eastern-most limit. Ruthven (p. 80), however, believed that radix very probably would be found in western Indiana, a supposition since substantiated by Schmidt and Necker (1935: 72), who report the species from the dune region of Lake and Porter counties.

Fish And Shellfish Of The Middle Atlantic Coast, Rachel Carson

United States Fish and Wildlife Service: Publications

Contents: Economics • Fishing gear • Fishing grounds • Conservation • Oysters (Ostrea virginica) • Blue crab (Callinectes sapidus) • Croaker (Micropogon undulatus) • Porgy (Stenotomus chrysops) • Striped bass (Roccus saxatilis) • Weakfish (Cynoscion regalis) • Summer flounder (Paralichthys dentatus) • Shad (Alosa sapidissima) • Butterfish (Poronotus triacanthus) • Spot (Leiostomus xanthurus) • Mackerel (Scomber scombrus) • Menhaden (Brevoortia spp) • River herring (Pornolobus spp) • Sea bass (Centropristes striatus) • …

Effects Of Ddt And Other Insecticides On Several Species Of Potato Insects, Roscoe E. Hill

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Field and laboratory tests conducted in Nebraska showed DDT to be more effective than any other material yet tested against potato insect pests. Records were obtained on tuber flea beetles, Epitrix tuberis, potato psyllids, Paratrioza cockerelli, potato leafhoppers, Empoasca fabae, green peach aphids, Myzus persicae, Lygus elisus, Chlamydatus associatus, Aceratagallia uhleri and Macrosteles divisus. DDT remained effective against potato psyllids and potato leafhoppers under field conditions for a relatively long period of time. Populations of certain beneficial insects, such as Nabis spp., Orius spp. and lady beetles were found to be significantly reduced …

Charcoal Rot Of Corn And Sorghum, J. E. Livingston

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In Nebraska, the charcoal rot caused considerable damage to the 1940 grain sorghum crop in the south central counties, and the following year it caused serious lodging and reduction of yield in both corn and sorghum in all sections of the state. Field observations indicated that some varieties of sorghum were damaged less than others; thus it appeared desirable to test thoroughly all varieties to determine whether any were sufficiently resistant to be recommended for field planting or to be used in a breeding program. It seemed desirable to study the influence of soil environment on infection and the development …

Studies On The Riboflavin Content Of Cheese, I. L. Hathaway, H. P. Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The riboflavin concentrations of twenty-seven kinds of cheeses and cheese spreads were determined by feeding these products to rats whose body stores of riboflavin had been depleted by being fed a riboflavin-deficient diet. Fifteen experiments were made in which 1,223 rats were used. The results obtained varied from 13.5 to 1.2 micrograms of riboflavin per gram of cheese (or spread). The samples of Goat, Velveeta, Mel-0-Pure, and Liederkranz had the highest concentrations of riboflavin while the samples of Cream and Pimento Cream had the lowest concentrations.

Electric Chick Brooding Studies, F. D. Yung, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Circulars

Perhaps one of the most valuable lessons to be learned from a study of chick brooding is that good results can often be obtained in more ways than one. In carrying on work with electric brooders at the Nebraska Agricultural Experiment Station, special attention has been given to such factors as insulation and to other details of design which effect economy of operation and ease of construction. Low cost rather than "cheapness" has been the ideal. The work has been cooperative between the Agricultural Engineering Department and the Poultry Husbandry Department of the University of Nebraska.

Poultry Progress: Our Egg Marketing Job, F. E. Mussehl, H. C. Filley

Nebraska Agricultural Experiment Station: Historical Circulars

Eggs are one of the products which Nebraska farm families exchange for the necessities and comforts of life. Although values are measured in dollars and cents, the interest of the producers centers in the amount of useful goods and services that the eggs will buy rather than in the price per dozen or per case. Farmers are interested in a fair exchange value because they wish better homes, better schools, better churches, and better communities in general. In the typical Nebraska community, not only farmers but physicians, merchants, mechanics and school teachers are dependent for their income, either directly or …

Yields And Consumption Of Forage In Three Pasture-Types: An Ecological Analysis, R. W. Darland, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

Native pastures in eastern Nebraska and adjacent states have undergone profound changes as a result of drought. Bluestems (Andropogon) and associated grasses have been thinned and weakened, although recovery has been marked since 1941. In many pastures they were replaced by western wheat grass (Agropyron smithii) or other invading species. In nearly all, wheat grass now occurs in considerable abundance. Kentucky bluegrass (Paa pratensis), into which many overgrazed native pastures had degenerated, was almost completely killed by the drought, or greatly damaged as in western Iowa. Despite these widespread changes, few studies have been made on the relative yields, preferences …

Controlling The Ph Of Cultures Of Penicillium Notatum Through Its Carbon And Nitrogen Nutrition, Albert E. Dimond, George L. Peltier

Department of Plant Pathology: Faculty Publications

A survey of published material reveals relatively little information concerning the nutritional physiology of Penicillium notatum Westl. on synthetic media. Metabolism studies of P. notatum on various media have appeared to be incidental to the more pressing problem of producing penicillin quickly and in quantity. Fleming (1929) originally used a nutrient broth non-synthetic in nature. The Oxford group (Abraham et al., 1941) then adopted a modification of the so-called Czapek-Dox synthetic medium which supplies nitrogen as sodium nitrate and glucose as carbohydrate. Hobby, Meyer, and Chaffee (1942) suggested that brown sugar be substituted for glucose in this nutrient, with …

Cropduster Applying Ddt To Potato Field (Photo), Stephen D. Danielson

Department of Entomology: Faculty Publications

A large print found on top of a bookshelf in my office in the Plant Industry Building on East Campus, University of Nebraska–Lincoln. The office was previously occupied by Lloyd Anderson who was located at Scotts Bluff. Photo was taken in 1945 when the insecticide DDT dust was being applied to what appears to be a potato field.

Steve Danielson, January 16, 2018

Nebraska Bird Review (January-June 1945) 13(1), Whole Issue

Nebraska Bird Review

Contents

Check-List of the Birds of Nebraska,
By F. W. Haecker, R. Allyn Moser, and Jane B. Swenk .............1

Hammond's Flycatcher in Nebraska, By John T. Zimmer ...................41

Collectors, Birds, and Parasites, By Doris Gates............41

General Notes.............43

Index To Volume Xiii, Wilson Tout

Nebraska Bird Review

Adams County 52

Anas discors 43; acuta tzitzihoa 43; platyrhynchos platyrhynchos 43

Announcements 46, 73

Ardea herodias 44

Avocet 44

. . .

Warbler, Alaska Myrtle 2; Cape May 44; Chestnut-sided 50; Hooded 45; Mourning 50; Newfoundland Yellow 1; Prothonotary 44, 51; Wilson's 50

Washington County 50

Waxwing, Cedar 50

Weakly, Harry E. 43, 45

Widgeon, European 44

Wiley, Arthur 50

Wilson, Lincoln E. 50, 51

Wilsonia citrini 45

Wren, Carolina 52; Texas 2; Winter 44

Woodpecker, Downy 53; Western Red-headed 1

Zimmer, John T. 41

The Scottsbluff Pinto Bean, J. H. Jensen

Nebraska Agricultural Experiment Station: Historical Circulars

Scottsbluff Pinto is the name of a new variety of pinto field bean being released this year by the Nebraska Agricultural Experiment Station. The new bean variety is a selection from a cross between Great Northern and the common pinto bean. In a bean-breeding program conducted for the past several years by the Department of Plant Pathology, attempts have been made to obtain improved varieties of both field and garden beans for Nebraska. Although the breeding program was primarily concerned with the development of disease-resistant varieties, it was observed that Scottsbluff Pinto, possessing no notable disease resistance, has been outstanding …

Poultry Progress: What Are Good Chickens?, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Circulars

The desire for improvement is one of the highest of human virtues. Folks everywhere want good chickens. The poultry business is a competitive enterprise, and it is imperative that we have the best stock possible for the particular job to be done. But what are good chickens? Is there confusion about the term? Perhaps we can clarify the picture by asking one or two questions.

Fish And Shellfish Of The South Atlantic And Gulf Coasts, Rachel L. Carson

United States Fish and Wildlife Service: Publications

Contents
Introduction
The fisheries
The fishing grounds: The South Atlantic coast • The Gulf coast
Boats, men, and fishing gear
Marketing the catch
Biographies of the fish and shellfish of the region: Mullet • Spanish mackerel • Kingfish • Bluefish • Red snapper • Groupers • Sea trouts • Redfish • Black drum • Shrimp • The oyster • The blue crab • Other fish and shellfish • Menhaden • Shad • Pompano • Snook • Grunts • Sheepshead • Blue runner • Crevalle • Flounders • Sharks • Spiny lobster • Hard-shell clam • Bay scallop
Appendix
The nutritive …

Poultry Progress: How Long Should A Chicken Live?, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Circulars

Increased laying flock mortality has disturbed thoughtful hatcherymen, producers, processors, and research workers for several years, and very properly so, because hens which die before their time serve no useful purpose, except to raise in our minds the question, "Why?"

Nature And Degree Of Recovery Of Grassland From The Great Drought Of 1933 To 1940, F. W. Albertson, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

For eight years drought had prevailed in the mid- continental grasslands. The true prairie west of Minnesota, Iowa, and Missouri had been woefully depleted. Mixed prairie farther westward to the Rocky Mountains had been nearly or entirely destroyed. But now the parched soil was wet once more, wet to a depth of several feet. The hot dry air was now warm and moist. The terrible dust storms had ceased. A changed environment had come at last, for this was the end of the long period of drought. Thus, in 1941 the long delayed recovery of vegetation began. The nature of …

Protein Supplements In Dry Calf Starters For Calves On Limited Quantities Of Milk, George W. Trimberger, Herbert Perry Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This experiment was undertaken to determine the usefulness of various high protein concentrates of animal and plant sources in comparison with dried skim milk in calf starters during the early stages of calf growth.

Nebraska Bird Review (July-December 1944) 12(2), Whole Issue

Nebraska Bird Review

Contents

A Survey of Nesting Birds in the Fontenelle Forest, by Dr. Frederic D. Garrett … 25

N.O.U. Cooperative Bird Migration and Occurrence List for First Half of 1944 … 31

General Notes … 40

Changes in Nomenclature and Subspecific Status of Nebraska Birds … 44

Miscellaneous … 51

Membership Roll of the N.O.U. … 52

The Mosquitoes Of Nebraska, H. Douglas Tate, Doris B. Gates

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A survey of mosquitoes in Nebraska was conducted by the Nebraska Agricultural Experiment Station during 1942 and 1943. The object of the study was to determine the species, relative abundance, seasonal occurrence, and principal breeding places of mosquitoes in representative areas of the state. This report presents the results of the survey, and, in addition, some records and observations made in Nebraska by other workers during and previous to initiation of the project.

Grassland Patterns In 1940, J. E. Weaver, R. W. Darland

Department of Agronomy and Horticulture: Faculty Publications

Major changes in grassland have now been followed for a decade over a considerable portion of true prairie in Nebraska and Kansas. The replacement of portions of this association by mixed prairie has been described (Weaver, '43). This major change resulted from the enormous increase or invasion of western wheat grass (Agropyron smithii) and the development of an understory of blue grama (Bouteloua gracilis) or buffalo grass (Buchloe dactyloides). But numerous areas of true prairie were only partially occupied by western wheat grass. Nearly all of the original cover of bluestems and associated species, …

Notes On The Trematode Subfamily Loimoinae (Monogenea), With A Description Of A New Genus, Harold W. Manter, Waldo L. Schmitt

Harold W. Manter Laboratory of Parasitology: Library Materials

The subfamily Loimoinae was named by Price (1936) for a peculiar monogenetic trematode, Loimos salpinggoides MacCal lum, 1917, from the gills of a dusky shark, Carcharias obscurus (Lesueur), at Woods Hole, Massachusetts, USA. Price (1938) redescribed this trematode, correcting several errors made by MacCallum. Manter (1938) described Tricotyle scoliodoni from a shark, Scoliodon terrae-novae (Richardson), from Beaufort, North Carolina, USA. He noted some similarities between Tricotyle and Loimos. The redescription of Loimos by Price increased these similarities.

Annual Report: 1944

Cherry County (Nebraska) Extension: Historical Documents

Pasture-Forage-Livestock

A special P. F. L. cooperators card was made up for the range area. Five hundred cards were mailed out and 105 returned with signatures. Of the eleven practices listed on the card, the cooperator was asked to check those in which he was interested and wished information on. Labor saving devices ranked first, cattle grub control-second, protein supplements-third, minerals-fourth, wintering cattle on early cut hay-fifth, and bangs disease control-sixth. The average number of practices per rancher was approximately five.

Noxious Weeds

Bindweed infestation is rather limited in the county. Five drums of Atlacide were shipped in to the …

Index To Volume Xii, Jane B. Swenk

Nebraska Bird Review

Abies lasiocarpa, 41.

Alectoris graeca chukar, 2.

Audubon Wildlife Screen Tours, 22, 56.

Avocet, 34.

Bald pate, 33.

Bartramia longicauda, 2.

Bittern, American, 13, 21, 33.

Blackbird, Brewer’s, 38; Red-winged, 9, 13, 38; Rusty, 16, 38; Yellow-headed, 13, 21, 38.

Blinco, Mrs. George, Article by, 8–9.

. . .

Woodpecker, Eastern Hairy, 13, 15, 16, 21, 35; Lewis’s, 35; Northern Downy, 13, 15, 16, 21, 30, 35; Red-bellied, 13, 15, 16, 21, 30, 35; Red-headed, 16, 21, 28, 35.

Wren, Bewick’s, 36, 43; Carolina, 36; House, 27, 30, 36; Prairie Marsh, 36; Western House, 9, 10, 13, …

Nebraska Bird Review (January-June 1944) 12(1), Whole Issue

Nebraska Bird Review

Contents

Distribution of Upland Game Birds in Nebraska,
By Levi L. Mohler ............................... 1

General Notes .................................. 7

Minutes of the Forty-fourth Annual Meeting ............................ 17

Report on the Forty-first Annual Field Day ................................ 21

Miscellaneous ...................................... 22

North American Prairie, J. E. Weaver

Papers of John E. Weaver (1884–1956)

From the highlands of central Mexico across the entire United States and northward into Canada extends the great mid-continental prairie. On the east it is in contact with the deciduous forest. From this central mass the prairie extends westward beyond the Rocky Mountains across Wyoming into eastern Utah, and southwestward through northern New Mexico in to northern Arizona. The Palouse Grasslands occurred in eastern Oregon and Washington, and other parts of the far Northwest. The Pacific Prairie was found in the Great Valley of California, and the-Desert Plains Grassland still occupies much of southern Arizona and New Mexico and southwestern …

Recovery Of Midwestern Prairies From Drought, John E. Weaver

Papers of John E. Weaver (1884–1956)

The long period of desiccation, which began in 1934, finally terminated in 1940. The western portion of True Prairie was greatly decimated and a veritable mosaic of types of vegetation resulted. These ranged from well-preserved relict communities of bluestems (Andropogon) to mixed stands of grasses on nearly bared soil, but included communities of western wheat grass (Agropyron smithii) , short grasses (Bouteloua gracilis and Buchloe dactyloides) , needle grass (Stipa spartea), and prairie drop seed (Sporobolus heterolepis) . These types varied in size from a few square rods to many …