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Articles 251551 - 251580 of 256025

Full-Text Articles in Life Sciences

On A New Subspecies Of Porcupine From Nebraska, Myron H. Swenk Jan 1916

On A New Subspecies Of Porcupine From Nebraska, Myron H. Swenk

University Studies (University of Nebraska) (1888–1984)

Publication NO.2 of the Nebraska State Biological Survey.

Nebraska porcupines all belong to the yellow-haired species (Erethizon epixanthum) , and these animals have never been abundant in the state. Formerly, however, they were much more numerous than today, and enjoyed a more extended range in the state than they do at the present time. Up to about 1885 these animals occurred across the northern portion of Nebraska east at least to Pierce and Madison counties, there being records of four specimens secured along the small streams tributary to the Elkhorn river in these two counties between 1870 and 1885. Also, …


Ein Beitrag Zur Bienenfauna Nordwest-Thüringens, Paul Blüthgen Jan 1916

Ein Beitrag Zur Bienenfauna Nordwest-Thüringens, Paul Blüthgen

Be

No abstract provided.


Experimental Studies Of Vacuum Juice Heaters, Eugene Wycliffe Kerr, S. J. Webre Jan 1916

Experimental Studies Of Vacuum Juice Heaters, Eugene Wycliffe Kerr, S. J. Webre

LSU Agricultural Experiment Station Reports

No abstract provided.


The Stability Of Aspen As A Type, Arthur W. Sampson Jan 1916

The Stability Of Aspen As A Type, Arthur W. Sampson

Aspen Bibliography

No abstract provided.


Evaporation And Plant Zones In The Cedar Point Marsh, Paul B. Sears Jan 1916

Evaporation And Plant Zones In The Cedar Point Marsh, Paul B. Sears

Papers in Ecology

Yapp in trying to account for the xerophytic structure of marsh plants by means of evaporation studies has shown a definite correlation to exist between the strata of marsh vegetation and rates of evaporation at corresponding levels. The following studies were made in an attempt to discover what additional correlations, if any, exist between distribution of marsh plants and the evaporational power of the air at different portions of the habitat. While the exact quantitative significance of such work as the following may be brought into question, as it often is, the striking results obtained by Transeau, Livingston, Fuller, Weaver, …


Parnassius Apollo In Bayern Und Einigen Grenzbezirken, Max Bachmann Dec 1915

Parnassius Apollo In Bayern Und Einigen Grenzbezirken, Max Bachmann

An

Als H. Stichel im Jahre 1899 den mitteleuropäischen Parn. apollo von der nordischen Rasse unter dem Namen geminus abtrennte, hat diese Teilung nicht die uneingeschränkte Anerkennung der Entomologen gefunden und als er dann später im Jahre 1906 noch die Unterart melliculus aufstellte, bedeutete diese Neuerung „ einen Stich ins Wespennest", wie er sich selbst ausdrückte. Der Grund hier-für ist jedoch kaum in einem Mangel der Zweckmäßigkeit begründet, sondern der ungenauen vom Autor selbst nur als relativ brauchbar bezeichneten Diagnose zuzuschreiben. Für SticheI bedeutete geminus einen Kollektivbegriff für „ die Gesamtheit der den europä-ischen Hoch- und Mittelgebirgen" angehörigen Formen mit Ausnahme …


New Californian Bees, T. D. A. Cockerell Dec 1915

New Californian Bees, T. D. A. Cockerell

Co

No abstract provided.


Bulletin No. 141 - Variation In Minimum Temperatures Due To The Topography Of A Mountain Valley In Its Relation To Fruit Growing, L. D. Batchelor, F. L. West Dec 1915

Bulletin No. 141 - Variation In Minimum Temperatures Due To The Topography Of A Mountain Valley In Its Relation To Fruit Growing, L. D. Batchelor, F. L. West

UAES Bulletins

The most destructive weather enemy in all fruit growing sections is the late spring frost which frequently occurs after warm weather has caused the fruit blossoms to become fully developed. The variation in severity of such frosts in mountain valleys is a phenomenon well known to the practical orchardist. The actual extent of this variation and the contributing causes have claimed only a very little attention from scientific workers in the mountainous regions. The present publcation is a preliminary report of investigations which were planned to measure the extent of such temperature variations, and acertain if possible some of the …


A Brief Sketch Of The Life And Work Of Charles Edwin Bessey, Raymond J. Pool Dec 1915

A Brief Sketch Of The Life And Work Of Charles Edwin Bessey, Raymond J. Pool

Papers in Systematics and Biological Diversity

Charles Edwin Bessey, professor of botany and head of the department of botany in the University of Nebraska since 1884 and a conspicuous figure in American science and education, passed away at his home in Lincoln on February 25, 1915, after a critical illness of four weeks.

The Bessey family is of French extraction, the original form of the name being Besse. The tradition is that the early members of the family, who were Huguenots, were compelled on account of religious persecution to flee to England from the old home near Strassburg in Alsace. This exodus occurred in the latter …


Staminate Flowers In Anemone, Clarence Elmore Dec 1915

Staminate Flowers In Anemone, Clarence Elmore

School of Biological Sciences: Faculty Publications

Anemone caroliniana is one of the most common of spring flowers in the vicinity of Grand Island, Nebraska. For several years I have noticed that in a large number of the flowers the pistils are lacking. In 1914 in one collection of 250 specimens, 190 were perfect, 50 had stamens only, and 10 had few or abortive pistils. There were none that had pistils only. The condition found is indicated in table I.


Notes On The Trematode Genus Telorchis With Descriptions Of A New Species, Horace Wesley Stunkard Dec 1915

Notes On The Trematode Genus Telorchis With Descriptions Of A New Species, Horace Wesley Stunkard

Harold W. Manter Laboratory of Parasitology: Library Materials

Summary

The study of abundant material, both adult and immature forms from the trematode genus Telorchis, including four species new to science and others from new hosts and localities, has given data for the first general discussion of the genus yet made. The sub-genera Telorchis and Cercorchis proposed by Lühe intergrade and can not be retained. T. augustus and T. leptus if correctly described should be removed to an independent genus. The new and some older species are discussed in detail.


Bulletin No. 140 - The Summer Pruning Of A Young Bearing Apple Orchard, L. D. Batchelor, W. E. Goodspeed Nov 1915

Bulletin No. 140 - The Summer Pruning Of A Young Bearing Apple Orchard, L. D. Batchelor, W. E. Goodspeed

UAES Bulletins

The majority of horticultural writers seem to favor the summer pruning of apple trees. The practice, and the arguments made in its favor vary widely and in some instances seem almost contradictory. On the other hand some experimenters and practical workers have obtained negative results by summer pruning from the view-point of crop production and tree growth. Dickens(1) caused unproductive ten year old apple trees in Kansas to bear satisfactorily during the fourth year of summer pruning. The Gardners' Chronicle(2) compiled the opinions of more than one hundrend eighty-five fruit growers who practiced summer pruning, and about 82% of these …


Rules For Entries In Bibliographies, Supplementary To The American And British Library Associations' Catalog Rules, James Chester Bradley Nov 1915

Rules For Entries In Bibliographies, Supplementary To The American And British Library Associations' Catalog Rules, James Chester Bradley

Bo

No abstract provided.


Lamb Feeding Experiments: Part I. Fattening Western Lambs. Part Ii. Fattening Native Lambs. Part Iii. A Comparison Of Native And Western Lambs., Howard J. Gramlich Oct 1915

Lamb Feeding Experiments: Part I. Fattening Western Lambs. Part Ii. Fattening Native Lambs. Part Iii. A Comparison Of Native And Western Lambs., Howard J. Gramlich

University of Nebraska-Lincoln Extension: Historical Materials

CONTENTS
Summary
Introduction
Part I Fattening western lambs
Object
Description of the lambs
Treatment previous to the experiment
Rations fed
Feed yards and equipment
Weather conditions
Duration of experiment
Prices of feeds
Corn and alfalfa vs corn, alfalfa, and corn silage
Shelled corn and whole alfalfa vs ground corn and ground alfalfa
Comparison of good alfalfa hay and poor alfalfa hay when fed in conjunction with shelled corn
Ground corn and ground alfalfa with and without corn silage
Corn silage when fed with shelled corn and whole alfalfa and when fed with ground corn and ground alfalfa
Cost of 100 …


The Prairie Dog And Its Control, Myron Harmon Swenk Aug 1915

The Prairie Dog And Its Control, Myron Harmon Swenk

University of Nebraska-Lincoln Extension: Historical Materials

Introduction
Injury
Appearance and History
The Prairie Dog Home
Habits
Natural Enemies
General Control
Use of Poisoned Baits
Competitive Experiments in Fall Poisoning
Competitive Experiments in Spring Poisoning
Demonstration Poisoning Experiments
Effect of Poisoning on Other Animals
Fumigation of Burrows
Fumigation Experiments
Less Successful Methods
Bibliography


Descriptions And Records Of Bees - Lxix, T. D. A. Cockerell Aug 1915

Descriptions And Records Of Bees - Lxix, T. D. A. Cockerell

Co

No abstract provided.


Descriptions And Records Of Bees - Lxviii, T. D. A. Cockerell Jul 1915

Descriptions And Records Of Bees - Lxviii, T. D. A. Cockerell

Co

No abstract provided.


American Species Of The Genus Atractides, Ruth Marshall Jul 1915

American Species Of The Genus Atractides, Ruth Marshall

School of Biological Sciences: Faculty Publications

The water mites of the genus Atractides belong to a small subfamily, the Hygrobatinae. About ten species have been described by European hydrachnologists for Europe; two of these species have been reported by them also from North America, while one species is described for Madagascar. Three new species are now added to the list for the United States. All of the material, thirty-eight individuals, was found by the author in small lakes in Wisconsin, United States


Mallophaga From Apteryx, And Their Significance, With A Note On The Genus Rallicola, Launcelot Harrison Jun 1915

Mallophaga From Apteryx, And Their Significance, With A Note On The Genus Rallicola, Launcelot Harrison

Harold W. Manter Laboratory of Parasitology: Library Materials

Regards the skins of five species of Apteryx in the collection at the Cambridge University Museum in England. From these were collected three species of Mallophaga belonging to the genus Rallicola. These are described with discussion about the significance of this occurrence upon Apteryx, from which no Mallophaga have previously been recorded.


Animals And Plants Described As New From Colorado In 1912, 1913, And 1914, T. D. A. Cockerell Jun 1915

Animals And Plants Described As New From Colorado In 1912, 1913, And 1914, T. D. A. Cockerell

Co

No abstract provided.


Descriptions And Records Of Bees - Lxvii, T. D. A. Cockerell Jun 1915

Descriptions And Records Of Bees - Lxvii, T. D. A. Cockerell

Co

No abstract provided.


Management Of Irrigated Land: Report Of The Scottsbluff Experiment Substation, Mitchell, Nebraska, Fritz Knorr Jun 1915

Management Of Irrigated Land: Report Of The Scottsbluff Experiment Substation, Mitchell, Nebraska, Fritz Knorr

University of Nebraska-Lincoln Extension: Historical Materials

SUMMARY.
Seepage may be prevented to some extent by employing proper methods of irrigation. Overirrigation may have a tendency to water-log the soil.
A small head of water, properly used, will irrigate more land and do better work than a large head gone over the land hurriedly.
The distance of irrigation ditches should be such that the water may travel between the ditches in about two hours.
If land can be irrigated in the fall with the same care that crops are irrigated in the summer, there is an advantage to fall irrigation. If water cannot be properly cared for …


A Study Of Senescence, William T. Sanger Jun 1915

A Study Of Senescence, William T. Sanger

Historical Dissertations & Theses

A complete study of senescence would involve, not only a consideration of man, but of lower organisms, animal and plant, as well as institutions, races, nations, even the cosmos itself; for assuredly the phenomena of decay are as universal and intricate as those of genesis. In the present study, however, it will be attempted merely to indicate, first, the best that has already been done upon human senescence; second, to add further findings; and third, to set more definitely a number of new problems for future investigation.


Corn Silage And Alfalfa Hay For Beef Production, Ralph K. Bliss, C. B. Lee May 1915

Corn Silage And Alfalfa Hay For Beef Production, Ralph K. Bliss, C. B. Lee

University of Nebraska-Lincoln Extension: Historical Materials

SUMMARY.

1. A ration of corn and alfalfa hay produced the cheapest gains of any ration used. Furthermore, the steers fed corn and alfalfa hay made as rapid gains as did the steers on any other ration.
2. Had the alfalfa hay used in the first experiment cost $20 per ton, the average profit on the three lots receiving alfalfa would have been 15 per cent greater than the profit on the best one of the three lots not receiving alfalfa.
3. Cold pressed cottonseed cake did not give as good results, as regards either rate of gain or economy …


Descriptions Of New Hymenoptera, No. 9, J. C. Crawford May 1915

Descriptions Of New Hymenoptera, No. 9, J. C. Crawford

Co

In this paper are included, in addition to the descriptions of new parasites of economic importance, records of some North Dakota bees from O. A . Stevens, a series of specimens having been given to the United States National Museum. All the illustrations, with the exception of those of G. hagenowi, were made with a camera lucida.


Pork Production (Popular Edition), W. P. Snyder, E. A. Burnett May 1915

Pork Production (Popular Edition), W. P. Snyder, E. A. Burnett

University of Nebraska-Lincoln Extension: Historical Materials

This is the shorter or "popular" edition.

Contents:
Introduction
Wintering old brood sows
Wintering young brood sows
Food cost of the 50-pound pig
Pigs from old sows
Pigs from young sows
Cost of fall and spring pigs compared
Cost of pigs from old sows and young sows compared
Cost of growing pigs on alfalfa pasture and grain
Shorts for pigs on alfalfa pasture
Soaked or dry corn for pigs on alfalfa pasture
Five summers' record on gilts
Corn and supplementary feeds for fattening hogs:
Winter of 1911-1912
Winter of 1913-1913
Wheat and rye compared with corn for fattening hogs with …


Citrus Notes-Orange Marketing Troubles, Charles C. Chapman Apr 1915

Citrus Notes-Orange Marketing Troubles, Charles C. Chapman

Charles C. Chapman Citrus Speeches

These are notes for a presentation made by Mr. Chapman to the San Fernando Chamber of Commerce. It mentions some of the challenges faced by the citrus industry, such as shipping difficulties, tariffs, production issues, and advertising. He implies that these issues are damaging the reputation of the orange.


Raising The Dairy Calf, E. G. Woodward Apr 1915

Raising The Dairy Calf, E. G. Woodward

University of Nebraska-Lincoln Extension: Historical Materials

There are in Nebraska more than 600,000 dairy cows. The average period of usefulness of the dairy caw is not more than eight years. This means that to maintain the dairy herds of Nebraska at their present size between 70,000 and 80,000 heifer calves must be raised each year. To mate these cows properly with dairy bred bulls will require the rearing of about 8,000 bulls yearly. Aside from the necessity of maintaining the herds at their present size, the importance of calf raising to the Nebraska dairyman lies in the fact that this is the surest and most satisfactory …


Pork Production, W. P. Snyder, E. A. Burnett Apr 1915

Pork Production, W. P. Snyder, E. A. Burnett

University of Nebraska-Lincoln Extension: Historical Materials

This is the "Limited Edition" long version.
Contents:

Introduction

Part I. Wintering brood sows:
Experiment 30. Wintering old brood sows
Table 1.-Wintering old brood sows. Record of four winters 1910-1914
Experiment 31. Wintering young brood sows
Table 2.-Wintering young brood sows. Record of five winters 1909-1914

Part II. Cost of the 50-pound pig
Experiment 32. Pigs from old sows
Table 3.-Cost of feed for producing a 50-pound pig from old sows.
Four years' record-1910-1913
Experiment 33. Pigs from young sows
Table 4.--Cost of feed for producing a 50-pound pig from young sows. Four years' record-1910-1913
Experiment 34. Fall pigs. Costs …


Soy Beans And Cowpeas, Theodore A. Kiesselbach Apr 1915

Soy Beans And Cowpeas, Theodore A. Kiesselbach

University of Nebraska-Lincoln Extension: Historical Materials

In recent years considerable interest has been manifest in Nebraska concerning soy beans and cowpeas; and numerous inquiries regarding them have come to the Experiment Station. The cowpea is regarded as a profitable crop chiefly in the cotton states, but has some importance as far north as Missouri, Illinois, Indiana, and Ohio. On the other hand, the soy bean is adapted primarily to the Northern States between the regions best suited for cowpeas in the South and Canada field peas in the North. The Central States in which they are most commonly grown are Illinois, Indiana, Ohio, and Michigan, and …