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Articles 32371 - 32400 of 32961

Full-Text Articles in Life Sciences

The Vitamin A Content Of Soybean Silage And Of A.I.V., Molasses, And Common Corn Silages, And The Effect Of Feeding These Materials Upon The Vitamin A Content Of Milk, I. L. Hathaway, H. P. Davis, J. C. Brauer Jun 1938

The Vitamin A Content Of Soybean Silage And Of A.I.V., Molasses, And Common Corn Silages, And The Effect Of Feeding These Materials Upon The Vitamin A Content Of Milk, I. L. Hathaway, H. P. Davis, J. C. Brauer

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A study was made of the vitamin A content of soybean silage, and of A.l.V., molasses, and common corn silage. The silages were fed to groups of cows and the vitamin A content of their milk determined. The vitamin A determinations were made by feeding the silage or the milk to groups of rats whose body stores of this vitamin had been depleted by being fed a vitamin-A-deficient ration. Approximately 780 rats were used in these experiments. There were no apparent ill effects of feeding as much as 3.2 grams of the A.l.V. silage per rat per day for eight …


The Utilization Of Food Elements By Growing Chicks. V. A Comparison Of Cottonseed Meal And Linseed Oil Meal As Portions Of The Protein Concentrate, C. W. Ackerson, M. J. Blish, F. E. Mussehl Jun 1938

The Utilization Of Food Elements By Growing Chicks. V. A Comparison Of Cottonseed Meal And Linseed Oil Meal As Portions Of The Protein Concentrate, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. Two lots of newly hatched chicks were fed rations differing only in five per cent of their make-up. In the ration of one lot five parts of linseed oil meal were added to 95 parts of the base, and in the other ration a mixture of 4.5 parts of cottonseed meal and 0.5 part of starch was added, to keep the protein level the same. The remaining portions of the two concentrates were made up of five parts each of meat scraps and fish meal. 2. The amounts of feed consumed by all chicks of both lots were kept …


Determining The Sex Of Day-Old Chicks, H. E. Alder Jun 1938

Determining The Sex Of Day-Old Chicks, H. E. Alder

Nebraska Agricultural Experiment Station: Historical Circulars

More than 2,000 years ago people were interested in determining the sex of the embryo in hatching eggs and the sex of day-old chicks. No method of determining the sex of day-old chicks (except of course in sex-linked chicks) was of the slightest value until the Japanese method was discovered and developed. About 1925 Japanese scientists discovered the presence of a rudimentary copulatory organ located on the ventral rim of the cloaca which was present in all day-old males and only a few day-old females.


Studies On Nutritional Muscular Dystrophy, I. Dietary Factors, Ii. Fibrosis And Lipomatosis Of Tissues, Violet Myrtle Wilder May 1938

Studies On Nutritional Muscular Dystrophy, I. Dietary Factors, Ii. Fibrosis And Lipomatosis Of Tissues, Violet Myrtle Wilder

Department of Biochemistry: Dissertations, Theses, and Student Research

dissertation published as three peer-reviewed papers:

Sergius Morgulis, Violet M. Wilder, and S. H. Eppstein. (September 1938). Further studies on dietary factors associated with nutritional muscular dystrophy. Journal of Nutrition 16(3): 219-227.

Howard C. Spencer, Sergius Morgulis, and Violet M. Wilder. (August 1937). A micromethod for the determination of gelatin and a study of the collagen content of muscles from normal and dystrophic rabbits. Journal of Biological Chemistry 120(1): 257-266.

Sergius Morgulis, Violet M. Wilder, Howard C. Spencer, and S. H. Eppstein. (August 1938). Studies on the lipid content of normal and dystrophic rabbits. Journal of Biological Chemistry 124(3): 755-766.


The Accuracy Of Pressure Gauges Used On Household Steam Pressure Cookers, Arnold E. Baragar May 1938

The Accuracy Of Pressure Gauges Used On Household Steam Pressure Cookers, Arnold E. Baragar

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In the pressure cooker, high temperature is obtained by using steam under pressure. Since the pressure gauge is used as the indicator of temperature it is essential that the gauge register the correct pressure. Hence, this paper deals mainly with a study of the accuracy of both new and old pressure gauges used on steam pressure cookers. At the same time, four other phases were investigated: (1) the proper functioning of safety valves, (2) the various methods of sealing the lid to the cooker, (3) the proper evacuation of air from the cooker, and (4) the use of a thermometer …


A Proposed Method For Classifying And Evaluating Soils On The Basis Of Productivity And Use Suitabilities, Arthur Anderson, A. P. Nelson, F. A. Hayes, I. D. Wood May 1938

A Proposed Method For Classifying And Evaluating Soils On The Basis Of Productivity And Use Suitabilities, Arthur Anderson, A. P. Nelson, F. A. Hayes, I. D. Wood

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is the object of this paper to present a method for classifying and evaluating the soils as mapped in regular soil surveys on the basis of land types, which are here defined as areas having reasonably similar productivity and use suitabilities. The standards used to differentiate land types will vary according to the desired objectives, but any material difference in yield, or in practices necessary to maintain a desirable level of productivity will justify recognition of land types. The proposed procedure involves a more detailed study of the influence which soils, slope, erosion, and drainage have on specific crops …


The Utilization Of Food Elements By Growing Chicks. Iv. Meat Meal And Fish Meal Compared With Meat Meal, Fish Meal, And Soybean Meal As Protein Concentrates, C. W. Ackerson, M. J. Blish, F. E. Mussehl Feb 1938

The Utilization Of Food Elements By Growing Chicks. Iv. Meat Meal And Fish Meal Compared With Meat Meal, Fish Meal, And Soybean Meal As Protein Concentrates, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. Two groups of 15 newly hatched chicks were fed rations differing in the composition of the protein concentrates. One lot received ration 2MFX, in which the concentrate was a mixture of meat meal and fish meal. In ration 3MFSX one-third of the meat and fish meals was replaced by soybean meal. The protein levels of the concentrates and of the rations as fed, were identical. 2. The composition of the chicks at the end of the feeding trial was determined, and the composition of the gains calculated. 3. The gain in live weight per gram of nitrogen or dry …


Ec38-118 Soil And Moisture Conservation In Nebraska, D.L. J. Gross, E.H. Doll Jan 1938

Ec38-118 Soil And Moisture Conservation In Nebraska, D.L. J. Gross, E.H. Doll

University of Nebraska-Lincoln Extension: Historical Materials

When the white men first explored Nebraska, they found little erosion taking place. They found the hills, particularly in eastern Nebraska, covered with a dense growth of grass, underlain with a thick mat of decaying debris. The valleys were even more densely covered with the water-loving grasses and sedges. The soil underneath the prairie was black and spongy, the result of centuries of accumulating humus. The valleys bordering the streams were boggy and abounded with springs. Clear water flowed constantly in the streams. The upland draws in the more favorable parts of the state were heavily covered with the big …


Ec38-118 Soil And Moisture Conservation In Nebraska, D.L. Gross, E.H. Doll Jan 1938

Ec38-118 Soil And Moisture Conservation In Nebraska, D.L. Gross, E.H. Doll

University of Nebraska-Lincoln Extension: Historical Materials

When the white men first explored Nebraska, they found little erosion taking place. They found the hills, particularly in eastern Nebraska, covered with a dense growth of grass, underlain with a thick mat of decaying debris. The valleys were even more densely covered with the water-loving grasses and sedges. The soil underneath and prairie was black and soggy, the result of centuries of accumulating humus. The valleys bordernig the streams were boggy and abounded with springs. Clear water flowed constantly in the streams. The upland draws in the more favorable parts of the state were heavily covered with the big …


The Nebraska Agricultural Outlook For 1938, A,W, Medlar, H.C. Filley, F. Miller, L.F. Garey, G.E. Hendrix, W.W. Heuermann, L.B. Snyder, A.G. George, Muriel L. Smith Jan 1938

The Nebraska Agricultural Outlook For 1938, A,W, Medlar, H.C. Filley, F. Miller, L.F. Garey, G.E. Hendrix, W.W. Heuermann, L.B. Snyder, A.G. George, Muriel L. Smith

University of Nebraska-Lincoln Extension: Historical Materials

Each year the federal government gathers data relating to agriculture through the various departments of the United States Department of Agriculture. These data are classified and analyzed by the Bureau of Agricultural Economics at Washington and all information which may be helpful to farmers is published. For several years it has been the policy of the Department of Rural Economics and the Agricultural Extension Service of the College of Agriculture, Lincoln, to select from the federal information facts which may be especially helpful to Nebraska farmers. These facts and other economic conditions in Nebraska are published this year as the …


Index To Volume Vi Jan 1938

Index To Volume Vi

Nebraska Bird Review

Aechmorphorus occidentalis, 1.

Agelaius phoeniceus fortis, 4.

American Golden-eye, 36.

Anus platyrhynchos platyrhynchos, 2.

Anderson, Dana, article by, 29.

Antrostomus vociferus vociferus, 7.

Aquila chrysaetos canadensis, 17.

Ardea herodias treganzai, 1.

Asyndesmus lewis, 14.

Avocet, 2, 14, 38.

. . .

Yellowlegs, Greater, 11, 12, 44; Lesser, 2, 9, 10, 11, 13, 18, 37, 44, 47.

Yellow-throat, Maryland (subsp.), 18, 40; Northern Maryland, 13; Western Maryland, 4, 10, 11, 47.

Youngworth, Wm., articles by, 6, 17.

Zenaidura macroura marginella, 3.


Report Of Progress Of The Nebraska State Museum, Erwin H. Barbour Jan 1938

Report Of Progress Of The Nebraska State Museum, Erwin H. Barbour

Bulletin of the University of Nebraska State Museum (1924–2023)

The history and development of the Nebraska State Museum since 1891 have been summarized in a preliminary manner up to 1925 in the first number of Volume I of the Bulletin of the Nebraska State Museum.1 Since 1927, the collections of the Nebraska State Museum, The University of Nebraska, have been housed in a new building, Morrill Hall, on the city campus of The University of Nebraska. It now seems fitting to report upon the exceptional progress of the past few years, and to acknowledge the fine cooperation of those who have helped to make it possible.


The Chemical Nature And Distribution Of Black Pigment In Soil, William Sherman Gillam Jan 1938

The Chemical Nature And Distribution Of Black Pigment In Soil, William Sherman Gillam

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

As used in this paper, humus refers to that portion of the soil organic matter peptized by four per cent ammonium hydroxide. That fraction peptized by four per cent ammonium hydroxide, precipitated by acids, and insoluble in alcohol, is designated as black pigment. It is called humic soil by many writers.


Bobwhite History, Muller Eugene Bogle Jan 1938

Bobwhite History, Muller Eugene Bogle

Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials

A later reprinting of the first edition with editorial amendments of Bobwhite History (1938) by Muller Eugene Bogle.


Nebraska Bird Review (January-June 1938) 6(1), Whole Issue Jan 1938

Nebraska Bird Review (January-June 1938) 6(1), Whole Issue

Nebraska Bird Review

CONTENTS

Birds of the Crescent Lake Migratory Bird Refuge. By Wilson Tout .............................. 1

General Notes .................. . . .. . . .. . . . . . . .. 4

The Mourning Dove Case. . . . . . . . . .. . . . . . . . . . . . . . . . .. 23


Root Distribution Of Trees In Relation To Soil Profile, J. E. Weaver Jan 1938

Root Distribution Of Trees In Relation To Soil Profile, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

One of the pronounced trends in American forestry during the past decade has been the development of a widespread interest in soils. As a consequence to the soil as a part of the environmental complex has been attributed much greater importance than formerly in forest production. In fact, the individual horizons of the soil profile are receiving attention each as a more or less distinct habitat of that highly organized body designated as soil. Just as soil scientists, until recent years, have given inadequate attention to the factor of vegetation in the constitution and development of soils, so too little …


Root Development Of Young Delicious Apple Trees As Affected By Soils And By Cultural Treatments, W. W. Yocum Dec 1937

Root Development Of Young Delicious Apple Trees As Affected By Soils And By Cultural Treatments, W. W. Yocum

University of Nebraska-Lincoln Extension: Historical Materials

Young Delicious apple trees were grown in two soil types, clay loam and loess, in eastern Nebraska, under a variety of cultural conditions. The development of roots and tops was studied for the first three years after transplanting in the orchards. In all, 73 trees were excavated.
The first two years were about normal in precipitation at Lincoln (locale of the clay loam) while at Union (locale of the loess) there was a deficit of over 9 inches each year. The third year, 1934, was one of severe drought and heat at both stations. The total rainfall deficiency for the …


The Utilization Of Food Elements By Growing Chicks. Iii. A Comparison Of Calcium Carbonate And Calcium Sulfate As Sources Of Calcium, C. W. Ackerson, M. J. Blish, F. E. Mussehl Dec 1937

The Utilization Of Food Elements By Growing Chicks. Iii. A Comparison Of Calcium Carbonate And Calcium Sulfate As Sources Of Calcium, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

I. The utilization of nitrogen, calcium, and phosphorus was studied with two lots of growing chicks by means of growth and body-analysis experiments. One lot had calcium added to the ration in the form of sulfate and the second received calcium carbonate, the additions being made on an equivalent calcium basis so that the experimental variable was the source of the calcium. 2. The percentage rate of gain and the gain per gram of nitrogen fed were identical in the two lots. 3. No significant differences were found in the utilization of nitrogen, calcium, or phosphorus by the birds of …


Root Development Of Young Delicious Apple Trees As Affected By Soils And By Cultural Treatments, W. W. Yocum Dec 1937

Root Development Of Young Delicious Apple Trees As Affected By Soils And By Cultural Treatments, W. W. Yocum

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The major problem of this investigation was to determine the effects of different cultural treatments and soil conditions upon the depth and lateral spread of the root systems of young Delicious apple trees during the first three years in the orchard. This study was conducted during the years 1932 to 1934 inclusive.


The Utilization Of Food Elements By Growing Chicks. Ii. A Comparison Of Protein Concentrates From Single And Multiple Sources, C. W. Ackerson, M. J. Blish, F. E. Mussehl Oct 1937

The Utilization Of Food Elements By Growing Chicks. Ii. A Comparison Of Protein Concentrates From Single And Multiple Sources, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of adding to a basal ration a protein concentrate consisting of meat scraps alone was compared with one made up of a mixture of meat scraps, fish meal, and dried buttermilk by means of growth and body-analysis experiments. 2. The percentages of nitrogen, calcium, and phosphorus contained in the chicks of the lot fed the mixture of three proteins were slightly higher than those found in the lot fed meat scraps as the concentrate. 3. The percentage rate of gain and the gain per gram of nitrogen fed were greater in the lot fed the mixture of …


Whole Issue Nebraska Bird Review (October 1937) 5(4) Oct 1937

Whole Issue Nebraska Bird Review (October 1937) 5(4)

Nebraska Bird Review

Contents

A Study of the Distribution and Migration of the Great Horned Owls in the Missouri Valley Region. By Myron H. Swenk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 79

General Notes ........................................... 106

Index ................................................... 112


Comparative Physiology Of Actinomyces In Relation To Potato Scab, Mitrofan M. Afanasiev Aug 1937

Comparative Physiology Of Actinomyces In Relation To Potato Scab, Mitrofan M. Afanasiev

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The present work was undertaken with the purpose of investigating the physiology of different strains of A. scabies as compared with saprophytic Actinomyces. By a comparative study of these groups, it was thought that differences in the physiology of the two might be found which would give a better understanding of the nature of this parasitism and also of the metabolism of Actinomyces in general. In addition, it was hoped that the determination of the factors influencing the parasitism of Actinomyces might establish a basis for the development of more efficient methods of controlling scab diseases. The present investigation …


The Influence Of Various Soil Factors Upon Potato Scab Caused By Actinomyces Scabies, R. W. Goss Aug 1937

The Influence Of Various Soil Factors Upon Potato Scab Caused By Actinomyces Scabies, R. W. Goss

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Scab, caused by Actinomyces scabies (Thaxt.) Giiss., is a potato disease of major importance in western Nebraska. Seed treatments are effective in controlling seed-borne scab, but it has been shown that even when healthy or treated seed potatoes are used the disease may be very severe because of infection from the soil. Crop rotation will reduce the incidence of the disease, but the fact that potato scab may cause serious loss in soils never before planted to potatoes indicates that there are numerous factors other than the time interval between potato crops which affect the occurrence of the disease. A …


Range Cattle Industry In Nebraska To 1890, David Robert Burleigh Aug 1937

Range Cattle Industry In Nebraska To 1890, David Robert Burleigh

Department of History: Dissertations, Theses, and Student Research

Range Cattle Industry in Nebraska to 1890

Chapter 1. Beginnings

Chapter 2. The cattleman occupies western nebraska

Chapter 3. The open range in operation

Chapter 4. Cattle losses: Disease, weather, Indians, rustlers

Chapter 5. The cattle boom

Chapter 6. Crisis in the range industry

Chapter 7. Economics of the range

Bibliography


Relation Of Height At Withers And Chest Girth To Live Weight Of Dairy Cattle Of Different Breeds And Ages, H. P. Davis, R. F. Morgan, Samuel Brody, A. C. Ragsdale Jul 1937

Relation Of Height At Withers And Chest Girth To Live Weight Of Dairy Cattle Of Different Breeds And Ages, H. P. Davis, R. F. Morgan, Samuel Brody, A. C. Ragsdale

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The size of a dairy cow is important from the standpoint of feed consumption and economy of production and also as an indication of the expected size of offspring. The ultimate disposal of dairy cattle is for beef, and the measure of returns is based upon size and condition. A method for the determination of the approximate weights of dairy females, where scales are not available, is needed. Measurements of dairy cattle which show development and skeletal growth by ages in relationship to weight are presented here for four different dairy breeds.


Whole Issue Nebraska Bird Review (July 1937) 5(3) Jul 1937

Whole Issue Nebraska Bird Review (July 1937) 5(3)

Nebraska Bird Review

Contents

A History of Nebraska Ornithology. III. Period of the Explorations of the Early Nineteenth Century (1804-1854). The Astorians with John Bradbury and Thomas Nuttall, Manuel Lisa's 1811 Expedition with Henry Brackenridge, and the Returning Astorians under Robert Stuart (1812- 1813). By Myron H. Swenk .......................... 51

General Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 57

N. O. U. Cooperative Bird Migration List For …


The Utilization Of Food Elements By Growing Chicks. I. A Comparison Of Protein Concentrates From Animal And Vegetable Sources, C. W. Ackerson, M. J. Blish, F. E. Mussehl Jun 1937

The Utilization Of Food Elements By Growing Chicks. I. A Comparison Of Protein Concentrates From Animal And Vegetable Sources, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effects of adding to a basal ration, protein concentrates from animal and vegetable sources were studied by means of growth and body-analysis experiments. 2. There was a small increase in the nitrogen content of the chicks fed the animal protein concentrate, but no differences appeared between lots with respect to their content of calcium and phosphorus. 3. The percentage rate of gain and the gain per gram of nitrogen fed were greater in the lot fed the animal protein concentrate. 4. The lot fed the animal protein concentrate retained more of the nitrogen fed, but less of the …


Block And Bridle Annual 1937 Apr 1937

Block And Bridle Annual 1937

Block and Bridle Annual (1933–2021)

Membership

Regular Activites

Feeders' Day

Emergency Livestock Day

Junior Ak-Sar-Ben Show

Junior Ak-Sar-Ben Ball

Block and Bridle Livestrock Juding Contest

High School Livesstock Judging contest

Women's Meat Judging Contest

Men's Meat Judging Contest

Initiation of New Members.

Special Activities

Omaha Day

Saddle and Sirloin Medal Essay Contest

Financial Statement

Publicity Obtained


In Memoriam, Lawrence Bruner, Myron H. Swenk Apr 1937

In Memoriam, Lawrence Bruner, Myron H. Swenk

Nebraska Bird Review

On January 30, 1937, at his home at 3033 Deakin Street in Berkeley, California, Lawrence Bruner, pioneer American economic entomologist and a world authority on grasshoppers and related insects (Orthoptera), as well as the person who more than any other individual was responsible for the organization of the Nebraska Ornithologists’ Union, passed away after a severe illness of a few days that culminated a rather extended period of gradually declining health. It is difficult to epitomize any account of the life accomplishments of this man, because they were so many and varied, and perhaps for this purpose there …


Whole Issue Nebraska Bird Review (April 1937) 5(2) Apr 1937

Whole Issue Nebraska Bird Review (April 1937) 5(2)

Nebraska Bird Review

Contents

Banding and Bird Study. By O. A. Stevens ... 27

General Notes ... 29

Editorial Page ... 34

In Memoriam. Lawrence Bruner ... 35