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Articles 247591 - 247620 of 256036

Full-Text Articles in Life Sciences

Cynanchum Barbigerum (Scheele) Shinners, Comb. Nov., Lloyd H. Shinners Apr 1951

Cynanchum Barbigerum (Scheele) Shinners, Comb. Nov., Lloyd H. Shinners

Field and Laboratory

No abstract provided.


Notes On Texas Compositae - Vii, Lloyd H. Shinners Apr 1951

Notes On Texas Compositae - Vii, Lloyd H. Shinners

Field and Laboratory

No abstract provided.


Geology Of The Eagle Ford Quadrangle, Dallas County, Texas, William Louis Turner Apr 1951

Geology Of The Eagle Ford Quadrangle, Dallas County, Texas, William Louis Turner

Field and Laboratory

The Eagle Ford quadrangle includes an area of 62 square miles in western Dallas County. It is bounded by the parallels 32°45'00" and 32°52'30" N, and by the meridians 96°52'30" and 97°00'00" W. The towns of Irving and Eagle Ford are in the area, as are portions of Grand Prairie and Arcadia Park. A network of paved highways and graveled roads makes most of the quadrangle readily accessible by automobile. Physiographically, this area is part of the Black Prairie, a province of low relief in which the landscape has been largely shaped by running water. West and Elm forks of …


Notes On The Turbellarian, Procotyla Fluviatilis Leidy, John Maxwell Anderson Apr 1951

Notes On The Turbellarian, Procotyla Fluviatilis Leidy, John Maxwell Anderson

Field and Laboratory

The observations here briefly presented should help solve a question in the literature, regarding the cocoon of Procotyla fluviatilis. The results also indicate that the breeding season of this species may be longer than heretofore reported. A few additional observations on the young worms, and on food habits of the adult are also included.


Effect Of Temperature-Change Upon Egg-Production In Lymaea Palustris (Mueller), Elmer P. Cheatum Apr 1951

Effect Of Temperature-Change Upon Egg-Production In Lymaea Palustris (Mueller), Elmer P. Cheatum

Field and Laboratory

No abstract provided.


Rhus Aromatica Ait. Var. Flabelliformis Shinners, Var. Nov., Lloyd H. Shinners Apr 1951

Rhus Aromatica Ait. Var. Flabelliformis Shinners, Var. Nov., Lloyd H. Shinners

Field and Laboratory

No abstract provided.


The Sweet Clovers (Melilotus) Of Texas, Joe F. Hennen Apr 1951

The Sweet Clovers (Melilotus) Of Texas, Joe F. Hennen

Field and Laboratory

The sweet clovers are of great economic importance in Texas as honey plants, soil builders, and forage crops, especially in the blackland prairie regions. Melilotus alba and its varieties are the most important.


A Female Neallotype Of Emesaya Incisa Mcatee & Malloch (Hemiptera, Reduviidae), Joe C. Elkins Apr 1951

A Female Neallotype Of Emesaya Incisa Mcatee & Malloch (Hemiptera, Reduviidae), Joe C. Elkins

Field and Laboratory

No abstract provided.


Chagas Disease And Vectors In North Central Texas, Joe C. Elkins Apr 1951

Chagas Disease And Vectors In North Central Texas, Joe C. Elkins

Field and Laboratory

All members of the large hemipterous family Reduviidae are predacious, but only members of the subfamily Triatominae feed exclusively on vertebrate blood. Readio (1927) noted that Mr. J. R. Lembert observed the common Pacific Coast species of Triatoma feeding on carrion and excrement. Lutz (1918) reported that Triatoma sanguisuga LeConte feeds on insects, including grasshoppers and potato beetles. Apparently neither of the above accounts illustrate normal feeding habits.


The North Texas Species Of Hymenocallis (Amaryllidaceae), Lloyd H. Shinners Apr 1951

The North Texas Species Of Hymenocallis (Amaryllidaceae), Lloyd H. Shinners

Field and Laboratory

The only recent descriptive account of the United States species of Hymenocallis is that by Small in his Manual of the Southeastern Flora (1933: several corrections of nomenclature are given by Morton, 1935). None of the 11 species there given is credited to Texas.


The Biology Of The Goldenrod Gall-Fly, Eurosta Solidaginis (Fitch), Blanchard O. Krogstad Apr 1951

The Biology Of The Goldenrod Gall-Fly, Eurosta Solidaginis (Fitch), Blanchard O. Krogstad

Journal of the Minnesota Academy of Science

No abstract provided.


A Method Of Demonstrating Corneal Mitosis (After The Method Of Gay And Kaufmann), Ernest Swanson, Shirley P. Miller Apr 1951

A Method Of Demonstrating Corneal Mitosis (After The Method Of Gay And Kaufmann), Ernest Swanson, Shirley P. Miller

Journal of the Minnesota Academy of Science

No abstract provided.


Ecological Studies In A Midwestern Range: The Vegetation And Effects Of Cattle On Its Composition And Distribution, J. E. Weaver, G. W. Tomanek Apr 1951

Ecological Studies In A Midwestern Range: The Vegetation And Effects Of Cattle On Its Composition And Distribution, J. E. Weaver, G. W. Tomanek

Department of Agronomy and Horticulture: Faculty Publications

There is continued need for a better understanding of range vegetation and its use by range animals. Range preservation and improvement in the midwest are largely matters of wise use and proper management of our natural grasslands. A more comprehensive understanding of the range itself is needed--its forage, soil, and water supply, and factors influencing a proper distribution of livestock. The degree of utilization of forage that will result in the maintenance of excellent or good range condition and the improvement of a range in fair condition should be ascertained. Soil conservation on range lands is accomplished primarily by improvement …


Letter From A. W. Ward To W. J. Fisher, Executive Secretary Nfa. The Robinson Sweet Potato Report, A. W. Ward Mar 1951

Letter From A. W. Ward To W. J. Fisher, Executive Secretary Nfa. The Robinson Sweet Potato Report, A. W. Ward

Documents

Letter from A. W. Ward to W. J. Fisher, Executive Secretary NFA, sending in write-up on sweet potato contest winner. Report on sweet potato contest winner.


Duranta L., Olga Cimetti Mar 1951

Duranta L., Olga Cimetti

Specimens by Name

No abstract provided.


Weed Control In Lawns And Gardens, Leonard L. Schrader, Soloman Cook Mar 1951

Weed Control In Lawns And Gardens, Leonard L. Schrader, Soloman Cook

SDSU Extension Circulars

Weeds. are a problem in the city, small town and around the farm home, just as they are a problem in pastures, hay lands and tilled fields. Wherever weeds grow, they are an unsightly and expensive nuisance. In the vacant or untended lots m town, weeds become the source of seed that will spread to surrounding gardens, lawns and farm fields. Hampered vision at intersections, caused by rank-growing weeds, has contributed to many traffic accidents. In addition, they sap the soil's fertility, which probably is sent up in smoke when the weeds are burned in the fall. In gardens, they …


North And South Dakota Horticulture, March 1951, North And South Dakota State Horticultural Societies Mar 1951

North And South Dakota Horticulture, March 1951, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 24, Number 3

Holboell's Grebe, Dr. O.A. Stevens
Keeping Up With the Jonses, Mrs. Louise Kinyon
Manitoba News Letter, W.R. Leslie
Newslants, H.A. Graves
Tragedies in Nature, H.N. Woodward
Garden Club Gleanings, Mrs. L.N. Brakke
Junior Garden Program in Sioux Falls Schools
More on Roses, P.H. Wright
Do You Belong?, Mrs. Margaret Bjornsen
Book Review, Mrs. Lona Crandall
Fruit and Vegetable Notes, F.X. Wallner
Indoor Gardening, Part 2, Mrs. G.A. Schnaidt
Secretary's Corner, W.A. Simmons
Worms in the Garden, Geo. Lawson


The Spotlight, Volume Ii, Number Iii, Unity High School Mar 1951

The Spotlight, Volume Ii, Number Iii, Unity High School

Documents

Newsletter of the Agriculture Department at Unity High School.


The Female Genitalia And Spermathecae Of Some Of The Rhynchophora, Herman O. Sanders Mar 1951

The Female Genitalia And Spermathecae Of Some Of The Rhynchophora, Herman O. Sanders

Theses and Dissertations

In this study of the genitalia and spermathecae of the Rhynohophora, eighty-two species, representing sixty genera, were examined as listed in Leng's Catalogue of Coleoptera of North America North of Mexico, together with seven species from the Phillippine Islands and one from China. By using the external female genitalia and spermathecae the Rhynochophora studied may be divided into eight and possibly nine well-defined groups. They are separated into these groups on the basis of the development of the nodulus and ramus and upon the degree of crenulation that occurs in the spermatheca. The spermatheca of all species studied has been …


A Study Of The Effects Of Electrical Stimulation, Gonadotrophin, And Thymus Upon The Metamorphosis Of Ambystoma Tigrinum Baird, Leon J. Butterfield Feb 1951

A Study Of The Effects Of Electrical Stimulation, Gonadotrophin, And Thymus Upon The Metamorphosis Of Ambystoma Tigrinum Baird, Leon J. Butterfield

Biology ETDs

It was the purpose of this study, (1) to measure the polarization of zodiacal light, (2) to investigate the orientation of the plane of polarization, and (3) to deduce from results obtained information concerning the origin of zodiacal light.


Letter From W. H. Clark, Jr., To S. B. Simmons. Letter From W. H. Clark, Jr., To A. L. Teachey, W. H. Clark Jr. Feb 1951

Letter From W. H. Clark, Jr., To S. B. Simmons. Letter From W. H. Clark, Jr., To A. L. Teachey, W. H. Clark Jr.

Documents

Letter from W. H. Clark, Jr., to S. B. Simmons, requesting advice on veteran. Letter from W. H. Clark, Jr., to A. L. Teachey, requesting advice on veterans.


North And South Dakota Horticulture, February 1951, North And South Dakota State Horticultural Societies Feb 1951

North And South Dakota Horticulture, February 1951, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 24, Number 2

The Prairie Falcon, Dr. O.A. Stevens
Stout Fellow, Louise Kinyon
Newslants, H.A. Graves
Low Cost Trees, M.K. Maines
Manitoba News Letter, W.R. Leslie
Garden Club Gleanings, Mrs. L.N. Brakke
College Flower Show, Leon Begalka
Book Review, Mrs. L.G. Elsinger
Tree Notes, F.L. Skinner
Fruit and Vegetable Notes, F.X. Wallner
National Parks and Monuments, Mrs. G.R. McArthur
Indoor Gardening, Mrs. G.A. Schnaidt
President's Message, Mrs. G.M. Jorgensen
Secretary's Corner, W.A. Simmons
Tomatoes, Dr. S.A. McCrory
Nursery Experiences, J.P. Vikla
Order Now, W.H. Snyder


Kentucky Warbler (Vol. 27, No. 1), Kentucky Library Research Collections Feb 1951

Kentucky Warbler (Vol. 27, No. 1), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Hairy Vetch For Nebraska, T. H. Goodding Feb 1951

Hairy Vetch For Nebraska, T. H. Goodding

Nebraska Agricultural Experiment Station: Historical Circulars

Hairy vetch is a winter annual legume. It may be planted either in the spring or fall. Hairy vetch often succeeds on soils where sweet clover and alfalfa fail. It is more tolerant to acid (lime-deficient) soils than most leguminous crops.


Letter From W. H. Clark, Jr., To S. B. Simmons, W. H. Clark Jr. Jan 1951

Letter From W. H. Clark, Jr., To S. B. Simmons, W. H. Clark Jr.

Documents

Letter from W. H. Clark, Jr., to S. B. Simmons, requesting information on NFA supplies.


Method Of Calculating Exposures For Photomicrographs, Harold M. Hefley Jan 1951

Method Of Calculating Exposures For Photomicrographs, Harold M. Hefley

Journal of the Arkansas Academy of Science

No abstract provided.


Home Demonstration Work In Arkansas, Mrs. J. Howard Crawford Jan 1951

Home Demonstration Work In Arkansas, Mrs. J. Howard Crawford

Journal of the Arkansas Academy of Science

No abstract provided.


Letter From S. B. Simmons To C. B. Cooper, S. B. Simmons Jan 1951

Letter From S. B. Simmons To C. B. Cooper, S. B. Simmons

Documents

Letter from S. B. Simmons to C. B. Cooper, giving feedback on his vocational agriculture program.


Freshwater Sponges In Arkansas, David Causey Jan 1951

Freshwater Sponges In Arkansas, David Causey

Journal of the Arkansas Academy of Science

No abstract provided.


Milliped Assembly Zinaria Butlerii Isogen (Xystodesmidae), Nell B. Causey Jan 1951

Milliped Assembly Zinaria Butlerii Isogen (Xystodesmidae), Nell B. Causey

Journal of the Arkansas Academy of Science

No abstract provided.