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

Digital Commons Network™

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

Life Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 248611 - 248640 of 256620

Full-Text Articles in Entire DC Network

The Effect Of Field Applications Of Insecticides On Honey Bees, Frank E. Todd, F. V. Lieberman, William P. Nye, G. F. Knowlton Aug 1949

The Effect Of Field Applications Of Insecticides On Honey Bees, Frank E. Todd, F. V. Lieberman, William P. Nye, G. F. Knowlton

All PIRU Publications

Reports of tests of new insecticides have tended to minimize the practical dangers to beekeeping when these toxicants are applied to crops in bloom. The idea is current that these insecticides are harmless to bees if applied during hours when bees are not on the field. An examination of one alfalfa-seed area, where bee losses from commercial applications were reported, prompted a more critical examination to determine the effect of field applications of these insecticides on bees. This paper is a report of field experiments near Logan. Utah, with early-morning applications of DDT, chlordane, parathion, and toxaphene to alfalfa in …


Kentucky Warbler (Vol. 25, No. 3), Kentucky Library Research Collections Aug 1949

Kentucky Warbler (Vol. 25, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


North And South Dakota Horticulture, August 1949, North And South Dakota State Horticultural Societies Aug 1949

North And South Dakota Horticulture, August 1949, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 22, Number 8

The Pectoral Sandpiper, Dr. O.A. Stevens
Newslants, H.A. Graves
Garden Notes, W.E.H. Porter
Manitoba News Letter, W.R. Leslie
Garden Club Gleanings, Mrs. G.M. Jorgensen
Fourth Robertson Medal, H.R. Woodward
Book Review, Mrs. L.N. Brakke
Fruit and Vegetable Notes, F.X. Wallner
Secretary's Corner, W.A. Simmons
Lilac Arboretum, John C. Wister


Reactions Of Protozoa To Volatile Plant Extracts, Gladys M. Burgess Aug 1949

Reactions Of Protozoa To Volatile Plant Extracts, Gladys M. Burgess

Tennessee State University Alumni Theses and Dissertations

No abstract provided.


The Effect Of Formalin On Futhering Delayed Separation Of Conjugating Paramecium Aurelia, Willard Casper Jordan Aug 1949

The Effect Of Formalin On Futhering Delayed Separation Of Conjugating Paramecium Aurelia, Willard Casper Jordan

Tennessee State University Alumni Theses and Dissertations

No abstract provided.


The Influence Of Vitamins B1- And D-Deficient Diets On Albino Rats Infected With Labyrinthitis, George Hull Jr. Aug 1949

The Influence Of Vitamins B1- And D-Deficient Diets On Albino Rats Infected With Labyrinthitis, George Hull Jr.

Tennessee State University Alumni Theses and Dissertations

No abstract provided.


Adequacy Of The High School Science Vocabulary In Biology In Filling The Needs For Normal Reading Of Popular Magazines, Clarence H. Stinemetze Jul 1949

Adequacy Of The High School Science Vocabulary In Biology In Filling The Needs For Normal Reading Of Popular Magazines, Clarence H. Stinemetze

Master's Theses or Doctor of Nursing Practice

The problem as implied in the title of this report has been an attempt to evaluate in terms of the vocabulary of the high school biology textbooks adopted by the State of Kansas. This study used five current magazines which were available to the students at the high school circulation desk, at the public library, on magazine counters, and in the home library.


Verbena Hastata L., T. Clark Jul 1949

Verbena Hastata L., T. Clark

Specimens by Name

No abstract provided.


North And South Dakota Horticulture, July 1949, North And South Dakota State Horticultural Societies Jul 1949

North And South Dakota Horticulture, July 1949, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 22, Number 7

The Parula Warbler, Dr. O.A. Stevens
Newslants, H.A. Graves
Garden Notes, W.E.H. Porter
Manitoba News Letter, W.R. Leslie
Growing Hardy Lilies, Mr. and Mrs. W.A. Rowell
Book Review, Mrs. Morris Harter
Grass for Athletic Fields, H.R. Woodward
Book Review, Mrs. L.R. Brakke
Garden Club Gleanings, Mrs. G.M. Jorgensen
Convention Program, Mrs. G.R. McArthur
Fruit and Vegetable Notes, F.X. Wallner
Springtime on the Border, R.W. Smith
Secretary's Corner, W.A. Simmons


Myrica Gale L., Tom Clark Jun 1949

Myrica Gale L., Tom Clark

Specimens by Name

No abstract provided.


Circular Letter #30, S. B. Simmons Jun 1949

Circular Letter #30, S. B. Simmons

Documents

Letter to Teachers of Vocational Agriculture from S. B. Simmons, concerning 1949-1950 program of work.


Acer Pensylvanicum L., H. Fritts Jun 1949

Acer Pensylvanicum L., H. Fritts

Specimens by Name

No abstract provided.


Comptonia Peregrina (L.) J.M. Coult., Harold C. Fritts Jun 1949

Comptonia Peregrina (L.) J.M. Coult., Harold C. Fritts

Specimens by Name

No abstract provided.


Commencement Exercises 1949, College Of Medical Evangelists Jun 1949

Commencement Exercises 1949, College Of Medical Evangelists

Commencement Programs

CONTENTS

2 | Lead On, O King Eternal - Ernest W. Shurtleff

3 | Program

4 | Class Roll


Commencement Sermon 1949, College Of Medical Evangelists Jun 1949

Commencement Sermon 1949, College Of Medical Evangelists

Commencement Programs

CONTENTS

2 | The Lord in Zion Reigneth - Fanny Crosby

3 | Program

4 | Class Roll


Circular Letter #29. Names Of Teachers For Whom Reservations Are Being Made For Conference In Washington, S. B. Simmons Jun 1949

Circular Letter #29. Names Of Teachers For Whom Reservations Are Being Made For Conference In Washington, S. B. Simmons

Documents

Letter to Teachers of Vocational Agriculture from S. B. Simmons, congratulating agriculture teachers for their participation in the state NFA convention. List of teachers for whom reservations were made for conference in Washington.


Egg Coolers For Better Eggs, Boyd J. Bonzer, Louis Lubinus Jun 1949

Egg Coolers For Better Eggs, Boyd J. Bonzer, Louis Lubinus

SDSU Extension Circulars

A recent study by the Research and Marketing administration showed that. South Dakota farmers are marketing only about 40 percent top quality eggs at the produce stations or first buyers. South Dakota is an egg exporting state and has to depend on Eastern and West Coast markets to buy three of every four eggs it produces. The consumers on these export markets are demanding a high quality egg, which leads to a great deal of discrimination against the low quality Midwestern eggs. Nearly all eggs are of top quality when they are laid. A very high percentage of the eggs …


Fusion 0f Internal Carotid Arteries In The Dogfish, Squalus Acanthias, Joseph P. Harris Jr. Jun 1949

Fusion 0f Internal Carotid Arteries In The Dogfish, Squalus Acanthias, Joseph P. Harris Jr.

Field and Laboratory

No abstract provided.


Pink Rot Of Potatoes Caused By Phytophthora Erythroseptica Pethyb., R. W. Goss Jun 1949

Pink Rot Of Potatoes Caused By Phytophthora Erythroseptica Pethyb., R. W. Goss

Nebraska Agricultural Experiment Station: Historical Research Bulletins

During the summer of 1943 reports were received of rotted tubers occurring in fields of early potatoes in central Nebraska. An estimated 10 per cent of the tubers were found rotted in some fields on August 5. In November and December of the same year the late-producing area of western Nebraska reported the occurrence, at harvest and in storage, of tuber rots differing from those previously recorded for that area. Specimens appeared similar to those observed during the summer in central Nebraska. Isolations were made and pathogenicity tests were conducted both on tubers and growing plants to study the influence …


North And South Dakota Horticulture, June 1949, North And South Dakota State Horticultural Societies Jun 1949

North And South Dakota Horticulture, June 1949, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 22, Number 6

The Blackburnian Warbler, Dr. O.A. Stevens
Newslants, H.A. Graves
Garden Notes, W.E.H. Porter
Manitoba News Letter, W.R. Leslie
Garden Club Gleanings, Mrs. G.M. Jorgensen
We Picked Cherries, H.R. Woodward
Book Reviews, Mrs. L.N. Brakke
Beebe's Philosophy, H.E. Beebe
Our Annual Meeting, Mrs. G.R. McArthur
Fruit and Vegetable Notes, F.X. Wallner
Book Review, Mrs. Morris Harter
Secretary's Corner, W.A. Simmons
Vegetables in Texas, R.W. Smith


Notes On Some Tropical American Skippers (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman Jun 1949

Notes On Some Tropical American Skippers (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman

Field and Laboratory

We lack accurate data on the distribution of tropical butterflies in the United States, and even in Mexico and Central America. Several factors contribute to this condition.


Transfer Of Texas Species Of Petalostemum To Dalea (Leguminosae), Lloyd H. Shinners Jun 1949

Transfer Of Texas Species Of Petalostemum To Dalea (Leguminosae), Lloyd H. Shinners

Field and Laboratory

No abstract provided.


The Genus Dalea (Including Petalostemum) In North-Central Texas, Lloyd H. Shinners Jun 1949

The Genus Dalea (Including Petalostemum) In North-Central Texas, Lloyd H. Shinners

Field and Laboratory

The following account relates only to those species definitely known to grow within one or more of the 13 counties surrounding Dallas and Fort Worth.


Notes On Winter Feeding Habits Of North Texas Bobwhites, Fred H. Wagner Jun 1949

Notes On Winter Feeding Habits Of North Texas Bobwhites, Fred H. Wagner

Field and Laboratory

From the viewpoint of the field biologist, Dallas is advantageously situated; for within a radius of less than a hundred miles one may reach six different principal soil types, each the result primarily of its underlying geological formation…. The problem of which this paper is the partial result, was an attempt to note differences or similarities in the feeding habits of bobwhites in these different regions (as affected by the soils through plant relationships.)


William D. Moore (1824-96), Amateur Geologist Of Mississippi, S. W. Geiser Jun 1949

William D. Moore (1824-96), Amateur Geologist Of Mississippi, S. W. Geiser

Field and Laboratory

It is now nearly ninety years since William D. Moore, then professor of English at the University of Mississippi, collaborated with Eugene W. Hilgard on his famous geological report of that State. The archivists and historians have lost Moore from their records (if, indeed, they ever sought seriously for information of him), so that what was written five years ago of W. D. Moore (in another connection) remains as true as it was then: "No record of whence he came, or whither went (when the University closed in 1861), is to be found at the Univer­sity." Since the present writer …


The Disappearance Of Plant Species From The Range In Texas, V. L. Cory Jun 1949

The Disappearance Of Plant Species From The Range In Texas, V. L. Cory

Field and Laboratory

My study of the range began in 1923. Since then, under conditions of continuous (and often excessive) grazing, I have observed that certain palatable species of range plants have disappeared, and others have been severely reduced in abundance. Doubtless other species vanished before 1923, when I began my observations.


Notes [On Arenaria, Delphinium, And Asclepias], Lloyd H. Shinners Jun 1949

Notes [On Arenaria, Delphinium, And Asclepias], Lloyd H. Shinners

Field and Laboratory

ARENARIA Drummondii Shinners, nom. nov. DELPHINIUM VIRESCENS Nutt. var. Wootoni (Rydb.) Shinners, comb. nov. ASCLEPIAS TUBER0SA L. var. interior (Woodson) Shinners, comb. nov.


Marketing Of Aspen, Zigmond A. Zasada Jun 1949

Marketing Of Aspen, Zigmond A. Zasada

Aspen Bibliography

The Lake States timber industry did a creditable job of producing and using considerable volumes of aspen during the war years. At that time it was shown that aspen could fill a variety of uses satisfactorily. However, improved marketing techniques are needed if present aspen stands are to be fully and profitably utilized. The aim of this paper is to call the attention of owners and producers of aspen to some of the points to be considered to improve marketing.


Aspen For Excelsior, Hereford Garland Jun 1949

Aspen For Excelsior, Hereford Garland

Aspen Bibliography

The use of aspen for the manufacture of excelsior is well established in the Lake States. The properties of the wood make it suitable for this general use, and there are adequate supplies available for increased productive capacity. The process of manufacturing excelsior is relatively uncomplicated, and the production equipment is simple and relatively low in cost. That the industry is not more extensive is obviously due to limitations in markets for excelsior. Expansion of the industry depends primarily upon the development of new uses and new products having excelsior as a base.


A Study Of Saponification Rates As Characteristic Of Esters, Thomas F. Mitchell Jr. Jun 1949

A Study Of Saponification Rates As Characteristic Of Esters, Thomas F. Mitchell Jr.

Bachelors’ Theses

The saponification of esters has been the subject of considerable study, and the technology of manipulation of the reaction well defined. As a result, the reaction has become a quantitative standard for ester analysis. However the comparison of the rates of this reaction with various esters as charaeteristic of them has received little consideration compared to the course of the reaction. The work of Mr. F. E. Adler on the adaptation of fat constants to waxes suggested the problem. The thesis will attempt to ascertain any significant differences in the saponification rates of various esters with regard to their characterization.