Digital Commons Network^™

On The Status Of Some Species Of The Genus Panurginus, J. C. Crawford

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In a paper on the bees of Nebraska, Messra Swenk and Cockerell say that a comparison of cotypes of Panurginus nebrascensis with specimens of P. ornatipes shows that the two are synonyms and that P. boylei is a subspecies. The types of all of the involved species being in the collections of the U.S. National Museum has led to a re-examination of them and the characters given show them to be abundantly distinct. In view of these characters, what Messrs. Swenck and Cockerell has under the name ornatipes is somewhat of a mystery.

Canadian Bees In The British Museum, T. D. A. Cockerell

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No abstract provided.

New Records Of Bees (Hymen.), T. D. A. Cockerell

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No abstract provided.

The North American Digger Wasps Of The Subfamily Scoliinae, Oscar C. Bartlett

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This contribution to our knowledge of the sub-family Scoliinae (digger wasps) found in North America, Central America and the West Indies, is the result of work done at the Massachusetts Agricultural College under the direct supervision of Doctor H. T. Fernald, and forms a portion of a thesis for the degree of doctor of philosophy. In it, an attempt has been made to place before those interested, a paper in which our present knowledge of these wasps is systematically arranged and the identification of the species facilitated.

Beef Production., H. R. Smith

University of Nebraska Historical Extension: Bulletin

Contents: Part I. Comparison of Rations. Part II. Comparison of Breeds and Types.

Names Applied To The Eucerine Bees Of North America, T. D. A. Cockerell

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No abstract provided.

Two Bees New To Canada, T. D. A. Cockerell

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No abstract provided.

Some American Lebertia, Ruth Marshall

School of Biological Sciences: Faculty Publications

The genus Lebertia of the water-mites is easily recognized by the character of the epimera. It belongs to a small group of genera, the subfamily Lebertiinae, characterized by the union of the four pairs of epimera into a single group, with their more or less complete fusion. This forms a shield which covers a large part of the ventral surface of the body.

Descriptions Of New Hymenoptera No. 5, J. C. Crawford

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Many of the species herein described were received from the Bureau of Entomology, United States Department of Agriculture, having been reared by its various branches in economic investigations as parasites of injurious insects. In this connection attention is especially called to the interesting and varied series reared from Agromyza. In this paper, as in all previous papers published by me, the sex first described is to be taken as the true type and the second as the allotype.

Collecting Bees At Gualan, Guatemala, Wilmatte P. Cockerell

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No abstract provided.

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

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No abstract provided.

Bulletin No. 120 - The Chemical Composition Of Crops As Affected By Different Quantities Of Irrigation Water, John A. Widtsoe, Robert Stewart

UAES Bulletins

In earlier bulletins it has been shown that when the quantity of irrigation water applied to crops is varied, the yields of the total crop as well as of the several plant parts vary quite definitely. The readiness with which plants respond to differences in irrigation is really remarkable and undoubtedly lies at the foundation of the future science of irrigation.

Variations in the quantities of irrigation water not only affect the total yield of dry matter, but also the composition of the plant itself. This fact was brought out many years ago in the investigations of this Station.

Bulletin No. 116 - The Production Of Dry Matter With Different Quantities Of Irrigation Water, John A. Widtsoe

UAES Bulletins

The second period of the irrigation investigations of the Utah Experiment Station began in 1901, when plans were formulated for accurate and extensive studies of the relations to each other of soils, crops and water. Preliminary work was done on the College Farm during the summer of 1901. During the winter of 1901-02, the Greenville Farm was secured, and on it was constructed a system of weirs, flumes and laterals, whereby accurately measured quantities of water could be placed at will upon any plat. With this apparatus a great number of vital questions concerning the practice of irrigation was submitted …

Bulletin No. 117 - The Yields Of Crops With Different Quantities Of Irrigation Water, John A. Widtsoe, L. A. Merrill

UAES Bulletins

The value of an irrigated farm rests In the land and in the water available for irrigation. Usually the water right for an acre is worth considerably more than the land itself. Under irrigation it is just as important to secure the largest yield per unit of water as it is to obtain the largest yield per acre. Owing to the high cost of water, the production per unit of water is frequently more important than the yield per acre. In Utah and the other irrigated states, the water available for irrigation, or that which may be made available, is …

Bulletin No. 119 - The Effect Of Irrigation On The Growth And Composition Of Plants At Different Periods Of Development, John A. Widtsoe, Robert Stewart

UAES Bulletins

Early in the pursuit of the irrigation investigations conducted by this Station, it became important to know the best amounts of water to apply at various stages of the plant's growth. The effect of the total quantity of water applied to a crop, depends in large measure upon the number of irrigations and their times of application during the season. It was thought that some light would be shed upon this problem by examining crops, under variable irrigation methods, at different times before maturity. Such work, also, it was hoped might yield more definite information concerning the manner in which …

Bulletin No. 118 - Methods For Increasing The Crop Producing Power Of Irrigation Water, John A. Widtsoe, L. A. Merrill

UAES Bulletins

The studies of the Utah Station on the effect of water on the yields of crops have shown, first, that as the water applied increases, the total weight of dry matter also increases; and second, that the increase is not in proportion to the amount of water applied, since the less water applied, the larger the yield of dry matter for each inch of water used. These experiments, as reported in bulletins No. 116 and No. 117 indicate with much certainty the best quantities of water to use for various crops. When, however, each farmer has been allotted this best …

Collecting Bees At Gualan, Guatamala, Wilmatte P. Cockerell

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No abstract provided.

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

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No abstract provided.

Some Parasitic Bees (Coelioxys), T. D. A. Cockerell

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No abstract provided.

Circular No. 7 - Labor Saving Devices For The Farm Home, Leah D. Widtsoe

UAES Circulars

This paper was written for and read before the first International Congress of Farm Women held at Colorado Springs, October 17th to 21st, 1911. A few changes have been made in the manuscript and some illustrations added.

The name indicates that it is written for the progressive farmers of some means--since all labor saving devices cost more or less money. The farm home which finds it difficult to keep flour in the barrel, naturally will not be interested in $125.00 water systems--except as an ideal they may attain to some day, and ideals are always helpful. To find ways and …

Some Bees From Guatemala, T. D. A. Cockerell

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No abstract provided.

The Psychology Of Senescence: An Introductory Study, Charles W. St. John

Historical Dissertations & Theses

The following biographical studies have been made with the purpose of showing through concrete cases some aspects of mental decline in senescence. To the objection that each of these cases follows a course in a degree divergent from that of normal mental decline, the reply is that a study of these striking instanced, we believe, afford a more ready insight into the underlying phenomena than would a similar one which deals with average or typical cases. The significance of exceptional cases should not be underestimated. Certain peculiar conditions have been present which have modified the typical phenomena, but after due …

Citrus Talks-Frost Prevention, Charles C. Chapman

Charles C. Chapman Citrus Speeches

This is the program for the Convention of Fruit Growers, called specifically to address the subject of frost prevention. Mr Charles C. Chapman addressed the convention as the President of the Citrus Protective League. The presentations addressed the history and importance of frost prevention and various methods of achieving it.

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

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No abstract provided.

Animals And Plants Described As New From Colorado In 1911, T. D. A. Cockerell

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No abstract provided.

Circular No. 6 - Measurement And Distribution Of Irrigation Water, L. M. Winsor

UAES Circulars

This circular has been prepared to meet the more urgent and immediate needs of the water user. The complications which usually arise in water measurement have been eliminated to such an extent that anyone who will follow the few simple instructions outlined in the following pages can learn to measure the flow of irrigation streams under ordinary conditions.

Spraying Apple Trees

University of Nebraska Historical Extension: Bulletin

The degree of success in spraying depends almost wholly upon when the materials are put on and how they are applied. 'The two principal pests that concern Nebraska apple growers are the apple scab and the codling moth worm. There are other injurious insects and fungous diseases common to the orchard, but if the orchard is properly treated for those two the others will in a large measure be controlled.

Names Applied To Bees Of The Genus Osmia, Found In North America, T. D. A. Cockerell

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No abstract provided.

New Bees From Brazil, T. D. A. Cockerell

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No abstract provided.

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

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No abstract provided.