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Articles 249241 - 249270 of 255951

Full-Text Articles in Life Sciences

A Study Of The Kjeldahl Method And A Modification For The Determination Of Nitrogen In Alcoholic Distillates., Margie M. Miller Jan 1940

A Study Of The Kjeldahl Method And A Modification For The Determination Of Nitrogen In Alcoholic Distillates., Margie M. Miller

Electronic Theses and Dissertations

No abstract provided.


The Influence Of Nutrition On Sporangial Formation In Araiospora Streptandra., Richard Curtis Webster Jan 1940

The Influence Of Nutrition On Sporangial Formation In Araiospora Streptandra., Richard Curtis Webster

Electronic Theses and Dissertations

No abstract provided.


A Study Of Local Size Variations In The Prairie Pocket-Gopher (Geomys Bursarius), With Description Of A New Subspecies From Nebraska, Myron H. Swenk Dec 1939

A Study Of Local Size Variations In The Prairie Pocket-Gopher (Geomys Bursarius), With Description Of A New Subspecies From Nebraska, Myron H. Swenk

University of Nebraska State Museum: Mammalogy Papers

Beginning in the fall of 1913, the writer has continuously been interested in accumulating accurate body measurements, taken in the flesh, of Nebraska pocket-gophers. As a result quite an assemblage of such data has been secured. In the case of Geomys bursarius, the bulk of these data relates to specimens trapped in the vicinity of Lincoln, Lancaster County, involving to date 48 adult and 38 immature males and 50 adult and 65 immature females. Recently these measurements have been tabulated and compared with such measurements of the species as have been recorded in the literature from other parts of …


North And South Dakota Horticulture, December 1939, North And South Dakota State Horticultural Societies Dec 1939

North And South Dakota Horticulture, December 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 12

The Cardinal, O.A. Stevens
Newslants, H.A. Graves
Our New Home, Dr. A.F. Yeager
President's Corner, H.E. Beebe
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
News Notes, C.B. Waldron
Winter's Approach, W.E.H. Porter
Book Reviews, Mrs. F. Briley
Fruit and Vegetable Notes, F.X. Wallner


The Utilization Of Food Elements By Growing Chicks. Viii. A Comparison Of Alfalfa Meal And Artificially Dried Sudan Grass Meal In Rations For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl Dec 1939

The Utilization Of Food Elements By Growing Chicks. Viii. A Comparison Of Alfalfa Meal And Artificially Dried Sudan Grass Meal In Rations For Growing Chicks, C. W. Ackerson, M. J. Blish, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. The effect of replacing the ten parts of alfalfa meal in a ration with artificially dried Sudan-grass meal on an equivalent protein basis was studied in a growth and body-analysis experiment with two lots of day-old chicks. 2. The chicks of both lots consumed equal amounts of dry matter during the feeding trial. 3. There were no significant differences in the growth rate or composition of the chicks at the end of a six weeks' feeding trial.


Description Of Two New Birds From Western Texas, Thomas D. Burleigh, George H. Lowery Jr. Nov 1939

Description Of Two New Birds From Western Texas, Thomas D. Burleigh, George H. Lowery Jr.

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.


A New Kangaroo Rat Of The Dipodomys Ordii Group From The Big Bend Region Of Texas, Monroe D. Bryant Nov 1939

A New Kangaroo Rat Of The Dipodomys Ordii Group From The Big Bend Region Of Texas, Monroe D. Bryant

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.


Geographic Races Of The Kangaroo Rat, Dipodomys Microps, E. Raymond Hall, Frederick H. Dale Nov 1939

Geographic Races Of The Kangaroo Rat, Dipodomys Microps, E. Raymond Hall, Frederick H. Dale

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.


North And South Dakota Horticulture, November 1939, North And South Dakota State Horticultural Societies Nov 1939

North And South Dakota Horticulture, November 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 11

The Fox Sparrow, O.A. Stevens
Newslants, H.A. Graves
Trees of the Dakotas, G.F. Will
Nature Department, H.L. Hopkins
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Outdoor Garden Ends, W.E.H. Porter
House Plants, C.B. Waldron
Book Reviews, Mrs. F. Briley
Fruit and Vegetable Notes, F.X. Wallner
Premium List


Kentucky Warbler (Vol. 15, No. 4), Kentucky Library Research Collections Oct 1939

Kentucky Warbler (Vol. 15, No. 4), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


North And South Dakota Horticulture, October 1939, North And South Dakota State Horticultural Societies Oct 1939

North And South Dakota Horticulture, October 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 10

The Swamp Sparrow, O.A. Stevens
Newslants, H.A. Graves
Trees of the Dakotas, G.F. Will
Nature Department, H.L. Hopkins
President's Corner, H.E. Beebe
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Autumn Colors, R.E. Smith
October, W.E.H. Porter
Book Review, Mrs. F. Briley
Fruit and Vegetables Notes, F.X. Wallner
Autumn Landscape, C.B. Walron


North And South Dakota Horticulture, September 1939, North And South Dakota State Horticultural Societies Sep 1939

North And South Dakota Horticulture, September 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 9

Lincoln's Sparrow, O.A. Stevens
Newslants, H.A. Graves
Trees of the Dakotas, G.F. Will
Nature Department, H.L. Hopkins
President's Corner, H.E. Beebe
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
The Summer Garden, W.E.H. Porter
Fruit and Vegetable Notes, F.X. Wallner
The Pansy, C.B. Waldron
Browning of Evergreens, F.L. Rockwell


Notes On The Life History And Ecology Of Gambusia Patruelis, Robert B. Troxel Aug 1939

Notes On The Life History And Ecology Of Gambusia Patruelis, Robert B. Troxel

Biology ETDs

It is the purpose of this thesis to present information on the life of Gambusia patruelis. The study is the combination of data collected by a number of writers on this subject, as well as observations taken of this species from the Rio Grande and conservancy ditches surrounding Albuquerque.


A Study Of The Variations In The Growth Of Blue Grama Grass From Seed Produced In Various Sections Of The Great Plains Region, Andrew Riegel Aug 1939

A Study Of The Variations In The Growth Of Blue Grama Grass From Seed Produced In Various Sections Of The Great Plains Region, Andrew Riegel

Master's Theses or Doctor of Nursing Practice

During the past 7 years the Great Plains Region, with its "dust bowl", has been the scene of unparalleled activity in the fields of range management and erosion control. The people of this short grass area are extremely conscious of the need for a sound, practical program of conservation that will revegetate the wasted pasture and cultivated land, which will aid materially in preserving the eroding soil. Many problems have arisen as the program of conserving the soil and the vegetation has progressed.


Bulletin No. 290 - Phosphate In Utah, J. Stewart Williams Aug 1939

Bulletin No. 290 - Phosphate In Utah, J. Stewart Williams

UAES Bulletins

Agitation for the development of the western phosphate field as part of the national program of conservation and economic rehabilitation has, in the last three years, focused public attention on the phosphate reserves of Idaho, Montana, Wyoming and Utah. In every conference or discussion on this subject, the minds of Utah's representatives have naturally turned to the question, "What is Utah's share in this great natural resource?" Obviously nature pays no heed to political boundaries, and neither does the prosperity of Utah's citizens depend solely upon that which is circumscribed within the state's boundaries. Nonetheless, it is necessary for Utahns …


Bulletin No. 289 - Business Analysis Of Farms In Utah County, Utah, Walter U. Fuhriman, W. Preston Thomas Aug 1939

Bulletin No. 289 - Business Analysis Of Farms In Utah County, Utah, Walter U. Fuhriman, W. Preston Thomas

UAES Bulletins

Project 179 of the Utah Agricultural Experiment Station - "A Study of the Agricultural Resources of Utah and their Utilization" - was set up in April 1936 as a state-wide project. The object of this project was to measure by areas the basic agricultural resources of the state and to translate the information collected into a program of more efficient use. The more specific objectives were: (1) classification of agricultural lands of Utah according to present and potential productivity and use; (2) determination of the net productive area of agricultural lands and water supply now available, or which may be …


North And South Dakota Horticulture, August 1939, North And South Dakota State Horticultural Societies Aug 1939

North And South Dakota Horticulture, August 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 8

The Chipping Sparrow, O.A. Stevens
Newslants, H.A. Graves
Trees of the Dakotas, G.F. Will
Nature Department, H.L. Hopkins
President's Corner, H.E. Beebe
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Summer Blossoms, W.E.H. Porter
Fruit and Vegetable Notes, F.X. Wallner
Shade Trees, C.B. Waldron
Book Reviews, Mrs. F. Briley


Origin And Development Of Tissues In The Root Of Daucus Carota, L., M. Gerald Vodde Aug 1939

Origin And Development Of Tissues In The Root Of Daucus Carota, L., M. Gerald Vodde

Bachelors’ Theses

When botanists of the seventeenth century began their anatomical investigations of plants, their attention was quite naturally centered on the parts of the plant which they most readily observed growing above the ground. The Englishman, Robert Hooke (1661), revolutionized the botanical sciences when he announced his discovery of the fact that plant tissues are composed of cavities which he called cells. Many workers enthusiastically took up the study of plant tissues and the individual cells of which these tissues are composed. Progress was rather slow, and it was not until approximately two hundred years later that the cell theory was …


The Pro-Embryo And The Embryo Of Chara, Mary William Saller Aug 1939

The Pro-Embryo And The Embryo Of Chara, Mary William Saller

Bachelors’ Theses

From earliest times the Charales have drawn the attention of Botanists. Their structure and affinities have led to the most interesting and comprehensive research projects. However, the earliest results, in the light of present day research, differ particularly in one important respect; namely, the origin of the embryo.


A History Of The Changes In Population Of Certain Mammals In Western Kansas, Floyd L. Carter Jul 1939

A History Of The Changes In Population Of Certain Mammals In Western Kansas, Floyd L. Carter

Master's Theses or Doctor of Nursing Practice

This particular study has been restricted to certain mammals in western Kansas, including some on which there is little information, and others which observers would be most likely to notice in everyday life. For several years the writer has been vitally interested in the animal life in Kansas. Therefore, when the need for a study of western Kansas mammals was presented to him in the summer of 1936, the problem of this study was selected. It is hoped that this report will suggest to ecologists, historians, and others, further studies, including reasons for the changes here-in shown. What have been …


Kentucky Warbler (Vol. 15, No. 3), Kentucky Library Research Collections Jul 1939

Kentucky Warbler (Vol. 15, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


North And South Dakota Horticulture, July 1939, North And South Dakota State Horticultural Societies Jul 1939

North And South Dakota Horticulture, July 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 7

The Savannah Sparrow, O.A. Stevens
Newslants, H.A. Graves
Nature Department, H.L. Hopkins
Our Wealth of Native Shrubs, G.F. Will
Grasshoppers, Thos. W. Hobart
President's Corner, H.E. Beebe
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Book Reviews, Mrs. F. Briley
June's Blossoms, W.E.H. Porter
Fruit and Vegetable Notes, F.X. Wallner
Peonies, C.B. Waldron


Nebraska Bird Review (July-December 1939) 7(2), Whole Issue Jul 1939

Nebraska Bird Review (July-December 1939) 7(2), Whole Issue

Nebraska Bird Review

Contents

Bird Banding Operations in Nebraska. By Harry E. Weakly .. 25

General Notes ........................................... 27

N. O. U. Cooperative Bird Migration List for Spring of 1939 ... 37

Minutes of the Fortieth Annual Meeting .................... 43

Report on the Thirty-seventh Annual Field Day. . . . . . . . . . . .. 47

A New Bird Guide Book. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 48


The Skull Of Squalus Acanthias, Allan J. Blake Jul 1939

The Skull Of Squalus Acanthias, Allan J. Blake

Bachelors’ Theses

The spiny dogfishes (Squalus) inhabit the North and South temperate zones; they have no anal fins; the points of the small teeth are deflected laterally so ·chat the inner margin forms a cutting edge. Squalus Acanthius is very abundant in British waters and off the Atlantic coast of North America. This group has five gill openings and two dorsal fins each of which is typically preceded by a spine. It reaches a length of four feet, and is a great nuisance to fisherman, eating fish and getting caught in lines or in nets. They are all viviparous. Many …


Plants And Animals Used As Sources Of Dye, Paint, And Skin Dressing In The Southwest, Mary Dennis Jun 1939

Plants And Animals Used As Sources Of Dye, Paint, And Skin Dressing In The Southwest, Mary Dennis

Biology ETDs

The area comprising the Southwest is somewhat disputed by different authors, but some idea of its extent and general features as well as some conception of the ethnology in relation to the tribes within the area is needed for an understanding of the scope of this investigation.


Notes On The Origin And Development Of Zea Mays, Martin William Fleck Jun 1939

Notes On The Origin And Development Of Zea Mays, Martin William Fleck

Biology ETDs

A combination of many and varied circumstances gives an unusual interest to the origin and natural relationships of Zea mays, although investigation of this sort does not always have an immediate utilitarian objective. But, this type of investigation must of necessity project itself into the remote, and sometimes obscure, past where attention becomes focused on many moot questions. Such intriguing problems as the relative antiquity of agriculture in the Old World, the length of time requisite for the development of maize as a human food stuff, and new ideas concerning techniques of aboriginal agriculture may perhaps be solved by information …


A Comparative Study Of The Skull And Long Bones Of The More Common Small Mammals Of Bernalillo County, New Mexico, Robert Theodore Fincke Jun 1939

A Comparative Study Of The Skull And Long Bones Of The More Common Small Mammals Of Bernalillo County, New Mexico, Robert Theodore Fincke

Biology ETDs

The identification of animals or parts of animals without the aid of external characteristics is confusing problem in many fields of zoology. This is especially true in some studies as life histories and the food habits of predators. A problem of this type is even more confusing in New Mexico because relatively little work has been completed on the taxonomy and the distribution of the native fauna.


Bulletin No. 288 - Draingage And Irrigation, Soil, Economic, And Social Conditions, Delta Area, Utah Division 4: Social Conditions, Joseph A. Geddes, Carmen D. Frederickson, Eldred C. Bergeson Jun 1939

Bulletin No. 288 - Draingage And Irrigation, Soil, Economic, And Social Conditions, Delta Area, Utah Division 4: Social Conditions, Joseph A. Geddes, Carmen D. Frederickson, Eldred C. Bergeson

UAES Bulletins

This study is a part of a more comprehensive one which was organized in 1928 for the purpose of ascertaining what conditions existed in bonded irrigation and drainage districts which were unable to. liquidate obligations incurred.

The first such area to be studied was the Delta Area in Millard County. This area was selected for this study because of the pressing need for more detailed and wider information than was available to either the farmers or the bondholders and because available facts based on careful study might aid in achieving fairer settlements. These data might also assist other areas in …


North And South Dakota Horticulture, June 1939, North And South Dakota State Horticultural Societies Jun 1939

North And South Dakota Horticulture, June 1939, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 12, Number 6

The Clay-Colored Sparrow, O.A. Stevens
Newslants, H.A. Graves
Our Wealth of Native Shrubs, G.F. Will
Nature Department, H.L. Hopkins
Manitoba News Letter, W.R. Leslie
Secretary's Corner, W.A. Simmons
Book Reviews, Mrs. F. Briley
Summers Curtain Raiser, W.E.H. Porter
Fruit & Vegetable Notes, F.X. Wallner
Some Hardy Roses, C.B. Waldron
Program Chairman
President's Corner, H.E. Beebe


The Food Of The Frog, Paul Schmitt Jun 1939

The Food Of The Frog, Paul Schmitt

Bachelors’ Theses

All living organisms whether they be the smallest single cells or the largest mammals demand nourishment for their multifarious physiological processes. Popular and pseudoscientific thinkers and writers speak of nutrition in terms of food consumed, while true scientific investigators consider nutrition in relation to the actual assimilation of the components of food called proteins, fats, and carbohydrates.