Digital Commons Network^™

Field Guide To Aid In Recognition Of Natural Triploid Aspen, Philip N. Joranson, Dean W. Einspahr, J P. Van Buijtenen

Aspen Bibliography

Swedish experience with the genetic improvement of the European aspen (Populus tremula L.), a species which is closely kin to our North American quaking aspen (P. tremuloides Michx.), suggests that the rate of volume increment and the length of fiber tracheids might both be increased in North American aspen by finding or producing trees which possess a triple set, rather than the usual double set, of "chromosomes". Chromosomes (Figure 1) are found within and inner region--the nucleus--of each of the millions of cells formed during the growth of a tree.

A Critical Study Of The Chromosomes In Two Species Of Myxophyceae, John Thomas Mullins

Master's Theses

The Myxophyoeae or blue-green algae have been frequent subjects for cytological investigation since Schmitz (1879) first called attention to two regions in the protoplast. Since that publication the morphological and chemical nature of the genetic material and the mechanism of cell division in the Myxophyceae has been a controversial subject, The evidence that has been presented is, tor the most part, more voluminous than enlightening.

This investigation was undertaken in order to verify the methods and check the results obtained with the smear technique by Strickland (1948). Additional methods were also applied which might enable a more critical evaluation of …

Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard

Nebraska Game and Parks Commission: Publications

IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …

Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard

Nebraska Game and Parks Commission: Publications

IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …

The Effects Of Low Temperature On Survival Of Rabbit Ova, Mansur Ferdows

Electronic Theses and Dissertations

In the field of animal production, genetic characteristics determine to a large extent the quality and the economy of the cattle. To hasten the wide spread dissemination of germ plasm, many commercial farmers have resorted to artificial insemination. Artificial insemination has however, only allowed for the wide spread dissemination of germ plasm from the male. If the female germ plasm could also be more easily disseminated through the highly experimental process of ova transfer, then more than the average number of offspring could be expected from a female in her life time. Because ova transplantation is in its infancy, many …

Correlation Of Size With Number Of Protophloem Points In Roots Of Zea Mays L., Elizabeth J. Cahoon

Journal of the Minnesota Academy of Science

No abstract provided.

Variation In Nymphaea, The White Waterlily, In The Itasca State Park Region, Paul H. Monson

Journal of the Minnesota Academy of Science

No abstract provided.

A List Of The Flora Of The Eastern Part Of Blue Earth County, Minnesota, Harvey G.A. Johnson, Laroy W. Zell

Journal of the Minnesota Academy of Science

No abstract provided.

The Natural Hybrid Of Paper Birch And Bog Birch, Knud E. Clausen

Journal of the Minnesota Academy of Science

No abstract provided.

Notes On The Tardigrada Of Minnesota, Mason R. Boudrye

Journal of the Minnesota Academy of Science

No abstract provided.

Orientation Of The Franklin Ground Squirrel To Environmental Objects, Howard D. Orr

Journal of the Minnesota Academy of Science

No abstract provided.

Statistical Sampling Techniques As Applied To Fish Populations, Zane Scheftel

Journal of the Minnesota Academy of Science

No abstract provided.

Methods For Detecting The Extent Of Contamination And Penetration Of Wheat By Rodent Urine, J. W. Laakso

Journal of the Minnesota Academy of Science

No abstract provided.

Effect Of Environment On The Percentage Of Summerwood And Specific Gravity Of Slash Pine, Philip R. Larson

Yale School of the Environment Bulletin Series

No abstract provided.

An Ecological Survey Of The Vegetation Of The Dinosaur National Monument, Utah, Stanley L. Welsh

Theses and Dissertations

The present work is a general survey of the vegetation of the Utah portion of the Dinosaur National Monument with special emphasis on some of the ecological aspects of the area. The vegetation ranges from xerophytic plant communities of the lower elevations to mesophytic communities of the higher elevations. Hydrophytic plant communities are also present to a limited extent along the Green River and where seeps or springs arise. Soils vary from fine clay to coarse gravel. The dividing lines between formations is often marked by extreme differences in soil type. During the author's first collecting trip into the Monument …

Candidates Nominated For The Modern Farmer Degree, New Farmers Of America

Documents

List of candidates nominated for the Modern Farmer Degree.

Lone Star Tick, Amblyomma Americanum, J. L. Lancaster

Journal of the Arkansas Academy of Science

No abstract provided.

Scrapbook 54-55, Mandarin Garden Club

Mandarin Garden Club Scrapbooks

Scrapbook includes images, club news and news clippings. Scrapbook includes items from 1956 and 1957. Includes the Eleventh Annual Camellia Show program from January 1947. Cover material: Cardboard. Size: 13” x 12.06” x 1”.

Introgression In Purshia Tridentata (Pursh) Dc. And Cowania Stansburiana Torr, Lindsey Kay Thomas

Theses and Dissertations

A study ot discordant variation in populations of Purshia tridentata, Purshia glandulosa, and Cowania Stansburiana has disclosed that introgressive hybridization can be expected whenever these species come in contact with each other. The introgression is not only of one pure species into that of another, but is also of introgressed populations into other introgressed populations and of pure populations into introgressed populations. Evidence was found showing that in all probability Purshia glandulosa is a stabilized segregant derived from introgressed populations. Evidence was also found and presented to show that introgression is responsible for the recent acquisition of stalked hypanthium glands …

Influence Of Various Factors On Aggregation Of Peorian Loess By Microorganisms, T. M. Mccalla, Francis A. Haskins, E. F. Frolik

Department of Agronomy and Horticulture: Faculty Publications

Soil structure is important in the attainment of adequate aeration for the aerobic microorganisms whose activities maintain such higher plant nutrients as sulfur, phosphorus, and nitrogen in a highly oxidized and thus readily available state. Good soil structure is also necessary for soil and water conservation, Under Nebraska conditions microorganisms and their decomposition products constitute a major source of soil-aggregating agents. The decomposition of crop residues and plant roots is important in the nutrition of these aggregating microorganisms. Other microorganisms, however, also utilize crop residues and plant roots, and they may decompose the aggregating agents as well, so that the …

Fluorometric Assay Of Free And Bound Coumarin Rn Sweetclover, Francis A. Haskins, Herman J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Free and bound coumarin are extracted by autoclaving leaf tissue in water. Free coumarin is determined directly from an aliquot of the water extract diluted in alkali. Additional autoclaving of the extract in concentrated alkali is required for release of the coumarin from the bound form, permitting an assay for total coumarin. Bound coumarin values are then obtained by difference. Results of the assay as applied to four different phenotypes of sweetclover are given.

Gyrodactylus Eucaliae N. Sp. (Trematoda: Monogenea) From The Brook Stickleback, Eucalia Inconstans*, Glenn L. Hoffman, Francis M. Ikezaki

United States Fish and Wildlife Service: Publications

A new species of Gyrodactylus was observed on the skin, gills, and fins of the brook stickleback from the English Coulee, Grand Forks, North Dakota during the summers of 1953-1955. Host-specificity is usually striking in the monogenetic trematodes and since this parasite was not observed on any other species of fish from this body of water or the nearby Turtle River, it was studied in detail and is here described as a new species, G. eucaliae.

Sweets, 21 Delicious Recipes : A Housewife Cookery Book, Rosemary Hume

Pamphlets

Written and presented with an 1956 issue of Housewife Magazine, a monthly magazine with advice for the homemaker.

Produced in association with and contains an advertisment for The Nestle Company Limited.

Contains some colour and black and white photgraphs.

The Value Of Including Chemistry Content In The Study Of High School Biology, Ramon Duane Buckley

Dissertations and Theses @ UNI

The purpose was to evaluate the effect of including some definite chemistry content in high school biology. This evaluation was made by comparing outcomes of instruction in two different groups of a high school biology course. The two groups were equated in terms of the intelligence quotients, the sex, and the previous achievement in biology of the class members. The comparative gains in factual knowledge were measured by means of an evaluation test. The comparative gains in appreciations and interests in biology were measured with a questionnaire.

Studies On The Trematode Larva Neascus, Thomas Reyes

University of the Pacific Theses and Dissertations

During the spring semesters of 1955 and 1956, while the writer was under the supervision of Dr. A. E. Noble, a preliminary survey was initiated on parasites in local fishes, amphibians, and reptiles occurring in the vicinity of Stockton, California. The collection of specimens in this survey included sixteen green sunfish, Lepomis cyanella, and two bluegills, L. macrochirus. Larval trematodes recovered from the heart and liver of these specimens belonged to the family Diplostomatidae Poirier (1886) which is characterized by a conspicuous constriction separating the fore and hind-bodies. The leaf-like forebody with the lateral borders converging ventrally to form a …

The Rabbit : An Illustrated Anatomical Guide, Edwin Chin Jr.

University of the Pacific Theses and Dissertations

This study on the anatomy of the rabbit was based on dissected material from the biological laboratories of the College of the Pacific. Because of existing errors in many of the present references to rabbit anatomy, the guide was prepared to meet the expressed need for a concise, illustrated outline of basic anatomy of the rabbit which might be used by students in an introductory course in mammalian or human anatomy. Since it is assumed that the guide would be supplemented by a dissection manual, syllabus, or textbook, textural material of such an outline is presented here in outline form.

Letter From J. E. Alston And C. A. Harris To Pastors, Deacons, And Members Of Churches With A Questionnaire, J. E. Alston, C. A. Harris

Documents

Letter from J. E. Alston and C. A. Harris to Pastors, Deacons, and Members of Churches, requesting them to sponsor a NFA member from their church. Questionnaire for churches.

Saint Pauls High School, Tentative Schedule Of Summer Activities, St. Pauls High School

Documents

Tentative schedule of summer activities for St. Pauls High School.

Whole Issue Nebraska Bird Review (January 1957) 25(1)

Nebraska Bird Review

TABLE OF CONTENTS

The Nebraska Bird Review .....................2

Officers .....................4

Harold Ray Benckeser..................... 7

The Greater Prairie Chicken in History..................... 8

General Notes .....................12

Excerpts From Letters To the Editors..................... 14

Book Reviews .....................16

The Ticks Or Ixodides Of The U.S.S.R.: A Review Of The Literature, George Anastos

Harold W. Manter Laboratory of Parasitology: Library Materials

No abstract provided.