Life Sciences Commons^™

Revision Of Salvia L., Section Salviastrum Gray, Eula Whitehouse

Field and Laboratory

Salviastrum, with S. texanum Scheele as the only known representative, was described as a genus by Scheele in 1849 (Linnaea 22: 584).

The Texas Species Of Conyza (Compositae), Lloyd H. Shinners

Field and Laboratory

The transfer of those species of Erigeron sometimes segregated under Leptilon to the widespread tropical genus Conyza by Dr. Arthur Cronquist (1943) brings together five annual weeds of Texas which are obviously closely allied. They may be distinguished by the following key. Specimens mentioned in the discussion are in the Herbarium of Southern Methodist University.

Nomenclature Of Texas Varieties Of Descurainia Pinnata (Cruciferae), Lloyd H. Shinners

Field and Laboratory

In LeRoy E. Detling's Revision of the North American species of Descurainia (Amer. Midi. Nat. 22: 481-520, 1939), the barely distinguishable races of D. pinnata are termed subspecies. The following are credited to Texas, listed here with the proper name as variety. Since a proposal to make mandatory the repetition of the specific epithet for the typical variety of a species has been approved by members of the American Society of Plant Taxonomists, and by a preliminary symposium at Utrecht considering proposals to be submitted to the next International Botanical Congress (see Brittonia 7: 16-17, 1949), no name is proposed …

A Key To The Snakes Of Dallas County, Texas, Lawrence Curtis

Field and Laboratory

This Key has been prepared as a means of identifying the twenty-nine species and subspecies of snakes definitely recorded from Dallas County, Texas. A previous publication (Curtis, 1949) contains the present-known county distribution, bionomics, and other information of forms here listed.

Soil-Root Relationships Of Certain Native Grasses In Various Soil Types, J. E. Weaver, R. W. Darland

Department of Agronomy and Horticulture: Faculty Publications

Table of Contents:
Introduction
Methods
Selecting The Site
Preparing The Trench
Marking Out The Monolith
Examination Of Soil
Preparing And Washing Away Of The Soil
Preparing The Roots For Photographing And Quantitative Study
Photographing And Sectioning The Root System
Examples Of Root Distribution In Different Types Op Sol
Kentucky Bluegrass
Blue Grama
Big Bluestem
Root Distribution In Soils With Claypans
Western Wheat Grass In Crete Silty Clay Loam
Western Wheat Grass In Butler Silt Loam
Root Development In Adjacent Soil
Western Wheat Grass In Scott Silty Clay Loam
Western Wheat Grass In Rendzina Soil
Root Distribution In Mellow Loess Soils …

The Occurrence Of Contracaecum Travassosi (Nematoda) In North America [Research Notes], Banner Bill Morgan, Robert L. Rausch, Everett Schiller

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Seven specimens of a nematode (five males and two females) of the genus Contracaecum were collected from the ventriculus of Pandion haliaetus carolinensis (Gmelin) (osprey) captured at Greenville, Ohio. After a comparison with C. travassosi described by Gutierrez (1943. Sobre la morfología de una nueva especie de "Contracaecum" (Nematoda: Ascaroidea) Rev. Brasil. Biol. 3: 159-172) from the cormorant (Phalacrocorax albiventer) collected at the San Jose light-house, Territory of Chubut, Argentina, our material has been assigned to that species. So far as the writers have been able to determine, this is the first record of the species …

Morus Rubra L., G. Winterringer

Specimens by Name

No abstract provided.

Plans For The Fifteenth National Convention, New Farmers Of America, J. R. Thomas

Documents

Plans for the fifteenth national NFA convention.

A Filter Paper "Chromatopile", Herschel Mitchell, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

The application of one- and two-dimensional paper chromatography to the separation of small amounts of many kinds of compounds has become a well-established and useful technique (1, 2, 3, 5, 6). In general these methods do not handle sufficiently large quantities of materials for isolation and chemical identification. Large columns of starch and other materials have been used satisfactorily for handling larger quantities of mixtures (4). Starch columns proved to be unsatisfactory, how- ever, for isolation of certain substances under investigation in this laboratory. As a consequence, a new and simple apparatus and technique have been developed, using …

Note From R. A. Broadnax To S. B. Simmons, R. A. Broadnax

Documents

Note from R. A. Broadnax to S. B. Simmons, placing an order for cattle.

A Study Of The Effects Of An Estrogenic Complex On Bacillus Subtilus, Roger S. Wotkyns

Biology ETDs

In an effort to understand malignancies, a number of studies have been made on the quantitative aspects of the effects of synthetic carcinogenic hydrocarbons on microorganisms. The molecular similarities of these synthetic carcinogens and natural products such as the estrogens, the androgens, cholic acid, vitamin D and others have stimulated a great deal of interest in investigation of the possible carcinogenic nature of these natural products.

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

North and South Dakota Horticulture

Volume 22, Number 9

Olive-Sided Flycatcher, Dr. O.A. Stevens
Garden Notes, W.E.H. Porter
Newslants, H.A. Graves
Manitoba News Letter, W.R. Leslie
Garden Club Gleanings, Mrs. G.M. Jorgensen
Gard on the High Plains, H.R. Woodward
Book Review, Mrs. L.W. Brakke
Our Sixth Annual Meeting, Mrs. G.R. McArthur
The Chrysanthemum, Miss Rachael Murdock
Fruit and Vegetable Notes, F.X. Wallner
Secretary's Corner, W.A. Simmons
Small Fruit Growing in S. Dak., Dr. S.A. McCrory
Junior Gardeners, Mrs. H.B. Crandall

The European Corn Borer, Gerald B. Spawn

Agricultural Experiment Station Entomology Pamphlets (1940-1952)

The European corn borer was first recorded from South Dakota i n the summer of 1946. At that time Hr. H. C. Severin and the author found borers in corn in Union and Lincoln and Minnehaha counties. Less than half of one percent of the stalks in the fields were infested at that time. During the summer of 1948 the infestation had spread over most of the corn producing area of our state. By the fall of that year 36 counties were known to be infested . Several fields in the southeastern part of the state had 100 per cent …

1947 Recommended Production Adjustments In Agriculture In South Dakota, Agricultural Experiment Station, South Dakota State College

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

This report represents the fifth in a series of wartime and postwar studies of apicultural adjustments in South Dakota to meet changing demand conditions. The general purpose of the study is to indicate some of the changes that have taken place in recent years and to estimate desirable crop and livestock adjustments for 1947 and the postwar period.

Letter From S. B. Simmons To B. W. Gatling. Invoice For Order Of Farm Management Handbook, S. B. Simmons, North Carolina Agricultural & Technical State University

Documents

Letter from S. B. Simmons to B. W. Gatling, sendng in copies of invoices. Invoice for order of Farm Management Handbook.

Letter From S. B. Simmons To W. A. Morgan. Invoice For Books, S. B. Simmons

Documents

Letter from S. B. Simmons to W. A. Morgan, sending in invoices. Invoice for book order.

Quantitative Study Of Root Systems In Different Soil Types, J. E. Weaver, R. W. Darland

Department of Agronomy and Horticulture: Faculty Publications

Study of soil-root relations of various crop plants and range grasses has lagged far behind the pressing need for an understanding of these relationships. Little progress in devising new methods for such study, at least methods that have been widely used in the field, has been made since the extensive researches by the direct method, using trench and hand pick, employed by Weaver (1, 2) during the period 1919 to 1926. This lack of a quantitative approach to comparative root studies in various soil types has undoubtedly been a chief reason for the dearth of more definite information on this …

Fraxinus Lanceolata Borkh., Virginius H. Chase

Specimens by Name

No abstract provided.

A Proposed Institutional-On-Farm Training Program For Negro Veterans Of Fayette County, David Hamilton

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

Forestiera Acuminata (Michx.) Poir., Glen S. Winterringer

Specimens by Name

No abstract provided.

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

The Kentucky Warbler

No abstract provided.

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

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.

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.

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

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

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

Specimens by Name

No abstract provided.

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

Specimens by Name

No abstract provided.