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Articles 250381 - 250410 of 255944

Full-Text Articles in Life Sciences

Viola Odorata L., Edwin Hubert Eames Sep 1931

Viola Odorata L., Edwin Hubert Eames

Specimens by Name

No abstract provided.


North And South Dakota Horticulture, September 1931, North And South Dakota State Horticultural Societies Sep 1931

North And South Dakota Horticulture, September 1931, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 3, Number 9

North Dakota State Horticultural Society News Letter, August 1931, C.B. Waldron, Fargo
Extracts from the Diary of a Traveling Man, W.A. Simmons, Sioux Falls
Tulips, Thomas W. Hobart, Sioux Falls
The White-Breasted Nuthatch, O.A. Stevens, Fargo
Pine Ridge Agency District Fair
Memorial Drives, Frank S. Kremer, Watertown
The Food Chamber, A.H. W. Birch, Apiarist
Horticulturalists, J.B. Taylor, Ipswich
Beans as a Cash Crop, W.G. McGregor, Ottawa, Canada
Preparing Bulbs for Winter Bloom, J.E. Park, Rosthern, Sask., Canada
Barberries and Mahonies Classified Under Black Stem Rust Quarantine Regulations, Plant Quarantine and Control Administration, Washington, D.C.


The Influence Of Number Of Daily Milkings On The Production Of Dairy Cows, R. F. Morgan, H. P. Davis Sep 1931

The Influence Of Number Of Daily Milkings On The Production Of Dairy Cows, R. F. Morgan, H. P. Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

High-producing Holstein, Jersey, Ayrshire, and Guernsey cows of various ages milked three times daily produced from 39.69 to 52.26 per cent more fat and from 44.98 to 65.18 per cent more milk than cows milked twice daily. When high-producing cows of all breeds milked four times daily were compared with cows milked twice daily, the fat production for the several age classes varied from 110.19 to 127.53 per cent and the milk production from 149.08 to 160.31 per cent greater for those milked four times. Milking high-producing cows four times as compared with three times daily showed an increased fat …


The University Fruit Farm At Union, Nebraska, C. C. Wiggans Sep 1931

The University Fruit Farm At Union, Nebraska, C. C. Wiggans

Nebraska Agricultural Experiment Station: Historical Circulars

The University Fruit Farm may be considered as a substation or detached portion of the Nebraska Experiment Station. It was established to assist in answering questions pertaining to fruit production, and only experiments of this sort are carried on. Supervision of this property rests with the Department of Horticulture of the Nebraska College of Agriculture. This circular has been prepared with the view of furnishing visitors to the farm with a brief outline of the experimental projects. Further information is available from either the local foreman or from the Department. Visitors are always welcome and helpful suggestions are solicited.


Note From Leonida Smith To S. B. Simmons, Leonida Smith Aug 1931

Note From Leonida Smith To S. B. Simmons, Leonida Smith

Documents

Note from Leonida Smith to S. B. Simmons, concerning a job.


Letter From Leonidas Smith To S. B. Simmons, Leonidas Smith Aug 1931

Letter From Leonidas Smith To S. B. Simmons, Leonidas Smith

Documents

Letter from Leonidas Smith to S. B. Simmons, requesting a job.


Viola Odorata L., Edwin Hubert Eames Aug 1931

Viola Odorata L., Edwin Hubert Eames

Specimens by Name

No abstract provided.


The Effect Of Maturity And The Ethylene Chlorhydrin Seed Treatment On The Dormancy Of Triumph Potatoes, H. O. Werner Aug 1931

The Effect Of Maturity And The Ethylene Chlorhydrin Seed Treatment On The Dormancy Of Triumph Potatoes, H. O. Werner

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Western Nebraska dry-land Triumph potatoes (Solanum tuberosum L.) vary in maturity at the time of harvest, from some that are very immature to others with vines which are entirely ripe. Variations in maturity may be due to such factors as early frost, drouth, destruction of vines by hail or early blight, time of planting, and strain type (whether early or late maturing). The question of seed maturity and its influence upon duration of the dormant period is of considerable commercial importance, since these potatoes are annually being planted in south Texas as early as December 26 and in southern …


North And South Dakota Horticulture, August 1931, North And South Dakota State Horticultural Societies Aug 1931

North And South Dakota Horticulture, August 1931, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 3, Number 8

Hints for Gardeners, Mrs. M.W. Sheafe, Watertown
North Dakota State Horticultural Society News Letter, July 1931, C.B. Waldron, Secretary
Extracts from the Diary of a Traveling Man, W.A. Simmons
Our Most Dependable Fruit, A.F. Yeager
General Forest Tree Planting, J.B. Taylor, Ipswich
Our Finest Meeting
A Chimney Sweep, O.A. Stevens, Fargo
The History of the Mendel Pear, Karl Pfaender, New Ulm, Minnesota
Growing and Protecting Our Timber, John B. Hanten, Watertown
Beekeepers Meet at Aneta J.A. Munro, Fargo


Studies Of Rickets In Swine, William J. Loeffel, Ray R. Thalman, F. C. Olson, F. A. Olson Aug 1931

Studies Of Rickets In Swine, William J. Loeffel, Ray R. Thalman, F. C. Olson, F. A. Olson

Nebraska Agricultural Experiment Station: Historical Research Bulletins

During the years 1925 to 1929 inclusive, the Nebraska Agricultural Experiment Station carried on a series of four experiments to study the importance of the antirachitic factors in the nutrition of swine. Vitamin D as obtained from cod-liver oil and the radiant-energy factor of sunlight were the sources of the antirachitic factors that received primary consideration. Emphasis was placed upon the study of the symptoms and lesions produced in pigs fed a rickets-producing ration.


The Development Of The Archegonium Of Marchantia PolymorphumL., Mary Virginia Braukman Aug 1931

The Development Of The Archegonium Of Marchantia PolymorphumL., Mary Virginia Braukman

Bachelors’ Theses

Marchantia polymorphum L. grows commonly under moist conditions, in ravines or along the sides of ditches, banks of streams, and in other similar places. It can be found in what appear to be quite dry situations, though it is more nearly correct to state that it can exist through more or less prolonged dry periods. It grows actively only when conditions are comparatively moist. Marchantia reaches its best development on damp burnt-over wooded places. Marchantia polymorphum L. appears as a flat dichotomously branched thallus, closely pressed to the substratum on which it grows. The thallus is selt-supporting, possessing chlorophyll, and …


The Botany Laboratory, Saylor John Neher Jul 1931

The Botany Laboratory, Saylor John Neher

Master's Theses or Doctor of Nursing Practice

In the present work it has been my purpose to present a descriptive list of laboratory exercises in botany which is predictable and useable under the existing conditions of the average small high school of western Kansas. To be more specific these exercises may be used by a teacher without special training in botany, in a crowded curriculum, and with little laboratory equipment. Most of the apparatus needed may be improvised by the pupil, and the plants called for are common in any community in the western half of Kansas.


How Far Is The Argument Of Homology Acceptable To Reason, Wilmur Daniel Ackerman Jul 1931

How Far Is The Argument Of Homology Acceptable To Reason, Wilmur Daniel Ackerman

Bachelors’ Theses

Evolution is a subject that involves a great deal more than the average person really thinks about. To approach subject like this, one must try to obtain as many of the different factors that taken into consideration as is possible.


Letter From James Spiney To S. B. Simmons, James Spiney Jul 1931

Letter From James Spiney To S. B. Simmons, James Spiney

Documents

Letter from James Spiney to S. B. Simmons, requesting his assistance in finding him a job.


Letter From Harry Lennon To S. B. Simmons, Harry Lennon Jul 1931

Letter From Harry Lennon To S. B. Simmons, Harry Lennon

Documents

Letter from Harry Lennon to S. B. Simmons, requesting assistance in finding a job.


Circular No. 95 - Annual Summary Of Publications, Blanche Condit Pittman Jul 1931

Circular No. 95 - Annual Summary Of Publications, Blanche Condit Pittman

UAES Circulars

Circular No. 95 contains a summary of publications issued by the Utah Agricultural Experiment Station, through its Editorial and Publications Division, for the fiscal year ending June 30, 1931.


North And South Dakota Horticulture, July 1931, North And South Dakota State Horticultural Societies Jul 1931

North And South Dakota Horticulture, July 1931, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 3, Number 7

Home Again, A.F. Yeager, Fargo, N.D.
News Letter, June, 1931, North Dakota Horticultural Society, C.B. Waldron, Secretary, Fargo, N.D.
Tentative Program for South Dakota State Horticultural Society Meeting at Rapid City, July 29-30
Extracts from the Diary of a Traveling Man, W.A. Simmons, Sioux Falls
Flowers of Late Spring and Early Summer, O.A. Stevens, Fargo, N.D.
The Troubles of the Nurserymen, George W. Gurney, Yankton
A Garden in June, Mrs. M.W. Sheafe, Watertown
Beekeeping Notes, J.A. Munro, Entomologist, Fargo, N.D.
South Dakota Notes
Evergreens of the Black Hills, E.A. Gates, Rapid City


Kentucky Warbler (Vol. 7, No. 3), Kentucky Library Research Collections Jul 1931

Kentucky Warbler (Vol. 7, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


The Common Intestinal Roundworm Of Swine, H. M. Martin Jul 1931

The Common Intestinal Roundworm Of Swine, H. M. Martin

Nebraska Agricultural Experiment Station: Historical Circulars

The large intestinal roundworm of pigs is a very common parasite, and is probably present in every hog raising district of Nebraska. Until the last few years the true nature of this parasite was unknown. Little did we realize the actual harm done by this worm; but through the scientific investigations of Stewart, Ransom, and others we now know that this parasite causes heavier losses to the breeder and feeder of swine than any other now common in Nebraska.


The Alkaloids, Felix F. Barre Jul 1931

The Alkaloids, Felix F. Barre

Electronic Theses and Dissertations

This thesis, presented for the degree of Bachelor of Science, provides a systematic chemical study of the alkaloids, a class of complex nitrogenous plant substances possessing basic properties. Barre opens by defining the alkaloids and surveying the various systems used to classify them, whether by natural versus artificial origin, chemical nucleus (pyridine, quinoline, or isoquinoline), volatility, or botanical family of origin, and outlines their general physical and chemical properties, including solubility, optical activity, and characteristic reactions with precipitating and color-test reagents.

The thesis details standard laboratory methods for the extraction and separation of alkaloids from plant material, including a step-by-step …


Iowa Academy Of Science, Jacob W. Swisher Jul 1931

Iowa Academy Of Science, Jacob W. Swisher

Iowa Academy of Science Documents

Reprinted from the July 1931 issue of the Iowa Journal of History and Politics published by the State Historical Society of Iowa,


Circular No. 94 - Control And Eradication Of Bang's Abortion Disease, D. E. Madsen, W. H. Hendricks Jun 1931

Circular No. 94 - Control And Eradication Of Bang's Abortion Disease, D. E. Madsen, W. H. Hendricks

UAES Circulars

The seriousness of Bang's abortion disease in Utah has made it necessary to promote more definite plans toward its control and eradication. The economic losses encountered are brought about not only through the loss of the calves but by the lessened milk production and lessened sale value of the animals themselves. Breeding efficiency is lower and such cows are more subject to udder infections. Many states now require that cattle shipped into them be negative to the abortion test; indications are that more states will adopt similar regulations. The passage of such regulation by some states would seriously interfere with …


Bulletin No. 229 - Production Study Of 160 Dairy Herds: Wellsville, Utah, 1929, George Q. Bateman Jun 1931

Bulletin No. 229 - Production Study Of 160 Dairy Herds: Wellsville, Utah, 1929, George Q. Bateman

UAES Bulletins

The condensed milk plant located at Wellsville, Utah, could use more milk to an advantage. The dairymen of the section were anxious to supply this demand. The dairymen and manufacturers cooperatively planned a survey to determine by what means this demand could be brought about: Should the dairymen increase the size of their herds? If not, what could be done to increase dairy production?


Surface Tension Of Saturated Vapors And The Equation Of Eotuos, Leon J. Shereshefsky Howard University Jun 1931

Surface Tension Of Saturated Vapors And The Equation Of Eotuos, Leon J. Shereshefsky Howard University

Department of Chemistry Faculty Publications

No abstract provided.


Bulletin No. 230 - San Juan County Experimental Farm: Progress Report, 1925-30, Inclusive, James H. Eagar, A. F. Bracken Jun 1931

Bulletin No. 230 - San Juan County Experimental Farm: Progress Report, 1925-30, Inclusive, James H. Eagar, A. F. Bracken

UAES Bulletins

San Juan County, located in the southeast corner of the state, has a dry-farm area of approximately 600,000 acres extending from Monticello 26 miles south to Blanding and 6 miles north to Peter's Hill and stretching from the Blue Mountains east 30 miles to the Colorado line. One-fourth to one-third of this area is covered with timber consisting mainly of pinion pine, oak brush, and juniper commonly called cedar. Both the juniper and pinion are of value as fuel and building material, and the juniper has an additional value for fence posts. While small areas have been cleared of timber …


Bulletin No. 228 - Twenty Years Of Rotation And Manuring Experiments At Logan, Utah, George Stewart, D. W. Pittman Jun 1931

Bulletin No. 228 - Twenty Years Of Rotation And Manuring Experiments At Logan, Utah, George Stewart, D. W. Pittman

UAES Bulletins

It was the task of the pioneers to "subdue" the land. To them, this meant removing the brush, opening the ditches, and reducing the coarse sod to a fine mellow seedbed. They performed their task. Then for one to three generations the sons, grandsons, and the great grandsons of the pioneers made the land feed them. The idea of "subduing" the land was so firmly established in the West, that few realized the soil was being depleted in a manner somewhat similar to a bank account always drawn on but never replenished. Highly productive land is able to stand such …


Bulletin No. 227 - Soft-Curd Milk, R. L. Hill Jun 1931

Bulletin No. 227 - Soft-Curd Milk, R. L. Hill

UAES Bulletins

Data on the early studies on the curd character of milk are found in Utah Agricultural Experiment Station Bulletin 207 and, therefore, are not included here. The key to research in this field came to light with the development of the "Hill Test," the results of which were first published in 1923. This test furnished a means of quantitatively measuring the difference in curd character of various milks.

The term "soft-curd" milk originated with R. L. Hill to describe milk which on coagulation with pepsin or rennin forms a curd that is soft and clabbery in consistency, differing widely from …


Surface Tension Of Saturated Vapors And The Equation Of Eotuos, Leon J. Shereshefsky Jun 1931

Surface Tension Of Saturated Vapors And The Equation Of Eotuos, Leon J. Shereshefsky

Faculty Reprints

No abstract provided.


North And South Dakota Horticulture, June 1931, North And South Dakota State Horticultural Societies Jun 1931

North And South Dakota Horticulture, June 1931, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 3, Number 6

Cutworms on Columbines, Mrs. Fannie M. Heath, Grand Forks, N.D.
News Letter, May 1931, North Dakota Horticultural Society, C.B. Waldron, Secretary
The Waxwings, O.A. Stevens, Fargo, N.D.
Extracts from the Diary of a Traveling Man, W.A. Simmons, Sioux Falls
The Mariposa Tulips, Claude A. Barr, Smithwick, S.D.
South Dakota's Opportunity to Benefit Under the Clarke-McNary Act, Jay Higgins, U.S. Forest Service, Deadwood
Early Spring Flowers, O.A. Stevens, Fargo, N.D.
Garden Miscellany, Mrs. M.W. Sheafe, Watertown
Horticultural Notes, John Robertson, Hot Springs
International Honey Producers Meet


The Ethnobotany Of The Isleta Indians, Volney H. Jones Jun 1931

The Ethnobotany Of The Isleta Indians, Volney H. Jones

Anthropology ETDs

This study is an outgrowth of the increasing interest in the history, ethnology, and archaeology of the Pueblo Indians of the Southwest. Although much research has been done in this very fertile field, new and fascinating problems are constantly pre­senting themselves.

When one states that the environment greatly influences a people he speaks truisms and common knowledge. The arid South­west with its distinctive flora offers an unusual environment to which the Indian had adapted himself remarkably well. The object in general of this problem has been to study the reciprocal re­lation between the Isleta Indian and his plant environment; speci­fically, …