Life Sciences Commons^™

Two Fossil Hymenoptera From Florissant (Vespidae, Megachilidae), T. D. A. Cockerell

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No abstract provided.

Circular No. 48 - Rural Credits In Utah, E. B. Brossard

UAES Circulars

The subject of rural credits is of interest to farmers, bankers, investors, and all others concerned about public welfare. This circular is written for the purpose of giving general information about agricultural credit conditions existing at the present time, with special reference to mortgage credit in Utah and the Federal Farm Loan System as now amended. The passage of the Federal Intermediate Credits Act, approved March 4, 1923 makes this an opportune time to check up on the situation.

Bulletin No. 187 - Irrigation Experiments With Potatoes, F. S. Harris, D. W. Pittman

UAES Bulletins

In a previous bulletin of this station are given the results of an experiment on different irrigation treatments of potatoes continued for five years. In view of the importance of the potato crop and of the importance of having it properly irrigated it was considered advisable to continue the experiment, with certain modifications based on experience, for a further period of five years. This total period of ten years should include most of the climatic variations which are common in this locality, and by eliminating the more unsatisfactory irrigation systems a closer approximation to the best system should be found. …

Bulletin No. 186 - Irrigation Experiments With Sugar Beets, F. S. Harris, D. W. Pittman

UAES Bulletins

A previous bulletin of this station gives the results of an experiment on the irrigation of sugar-beets continuing for five years. Since this experiment was deemed of sufficient importance to merit our best attention and since the climatic conditions which largely determine what is the best irrigation practice may not for so short a period properly represent the average of the community, it was thought advisable to continue the experiment, with certain modifications, for an additional five years. This bulletin reports the results of these last 5-years' work together with such general conclusions as can be drawn from the entire …

A New Dasymutilla From Arizona, James Chester Bradley, J. Bequaert

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Bulletin No. 185 - The Influence Of Nitrogen In Soil On Azofication, J. E. Greaves, D. H. Nelson

UAES Bulletins

Many soils of the arid west have a rich active azofying flora. This is due in no small measure to their composition. They are high in calcium and magnesium carbonate and contain a good supply of available phosphorus and potassium but have a low nitrogen content. They are poor in organic carbon; hence, their native supply of energy is limited. It is well-known that a liberal supply of rapidly decaying organic matter is beneficial, and this is being supplied to some soils in the form of manures. This will increase the nitrogen content of the soil. What effect will this …

Vii: Expedition Of The California Academy Of Sciences To The Gulf Of California In 1921: The Bees (I), T. D. A. Cockerell

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Vestigial Pleometrosis In The North American Polistes Pallipes Lepeletier, Joseph Bequaert

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In the October-December, 1919, issue of this BULLETIN my esteemed friend, Mr. Wm. T. Davis, has published some observations of the common American social wasps, a most welcome addition to the scanty literature of the subject in America. Among other interesting points, he relates several cases in which two, three, or four queens of the common Eastern Polistes pallipes Lepeletier ( = metrica Say; variatus Say) had worked together in establishing a new colony, though in this as in other species of Polistes each queen as a rule starts her nest alone.

Bulletin No. 184 - A Farm-Management Study Of The Great Salt Lake Valley, George Stewart

UAES Bulletins

This survey had for its purpose the study of farm organization in Great Salt Lake Valley. It is hoped that some conclusions may have been reached as to how to improve farming conditions. The records were taken during the summer of 1915 and consequently represent the farm business for 1914. Ordinarily the period of time that has elapsed since the records were taken would be too long to justify their being published. In view of the fact, however, that the World War began in 1914 and that its effects on the prices of farm products lasted until 1921, it is …

Hybridization Of Wheat, Floyd M. Beach

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to set forth the purpose of wheat hybridization. To do this properly it is necessary to know the history of hybridization of plants. Also to know some of the workers in this field and the hybrids produced by them. In the work at the Experiment Stations the various experimenters have discovered many interesting facts which it is necessary to know and understand. To thoroughly comprehend the work it is also necessary to do the actual processes of the work and to carry the hybrid through several generations and eventually to the goal for which …

Effect Of Root-Rot Upon Sugar-Beet Seed Production, Louis F. Nuffer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Due to considerable loss through root-rot of mother beets while in storage during the winter of 1918-1919 the Amalgamated Sugar Company asked advice in regard to planting beets which had decay lesions on them. Would the beets yield seed if planted? How much seed would these beets yield as compared with healthy beets? Would the seed produced be injured by having been grown on decayed beets? It was felt that an experiment carried out with the above questions in view would bring out many facts upon which to base conclusions in answering the questions of the Sugar Company.

Mendelian Inheritance In Wheat Hybrids, J. Leo Mortensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Until the beginning of the present centry the general opinion was that Egypt and Mesopotamia were the earliest homes of cultivated plants. Recent translations of the old Chinese records, however, reveal the fact that many of our cultivated plants were grown by the ancient peoples of China prior to the time of the Egyptians.

Dettweiler (11) (1914) writes: "Today it is admitted--except by a few--that the original home of the primitive European population, the Indo-Germans, is not Asia but northern Europe, that they developed their culture there in the late stone age, and that they then dispersed in their wanderings …

Two Nocturnal Bees And A Minute Perdita, T. D. A. Cockerell

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A Bee-Collecting Trip Across The Plains (Hym. : Apoidea, Sphecoidea), T. D. A. Cockerell

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Humble Bees At Roundhay, Leeds, A. E. Bradley

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Descriptions And Records Of Bees — Xcvii, T. D. A. Cockerell

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Experimental Pollination; An Outline Of The Ecology Of Flowers And Insects 5. Pollinators And Flowers Visited & 6. Flowers And Their Visitors, Frederic E. Clements, Frances L. Long

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Los Ápidos De España Vi. Géneros Xylocopa Latr. Y Ceratina Latr., José María Dumset Y Alonso

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8. The South And Central African Species Of The Genus Synagris Latreille (Hymenoptera), Joseph Bequaert

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This is the first of a series of articles in which I shall deal with the diplopterous wasps of South and Central Africa, south of 10° S. lat. The area under consideration includes the south-eastern portion of the Belgian Congo, or the Katanga district, which in its fauna and flora has many points in common with Northern Rhodesia, and differs considerably from the equatorial Congo belt. Since for lack of material the wasps of the Katanga could not be fully treated before, the present paper will supplement my Revision of Congo Vespidae (1918).

Enkele Beschouwingen Over Kleuren En Kleurgroepen Bij Plooivleugelige Wespen, (1), Joseph Bequaert

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De kleur der levende wezens is wellicht onder alle eigenschappen deze die het spoedigst de aandacht vestigt. Inderdaad berust het schoonheids-genot dat wij bij het beschouwen van vele dieren en planten smaken, grootendeels op hunne harmonische kleurteekening. Desniettegenstaande is het opmerkelijk dat wij uit een wetenschappelijk oogpunt veel beter over den vorm dan over de kleuren der levende wezens zijn ingelicht. Dit is mijns inziens aan twee hoofdredenen te wijten. Eene eerste moeilijkheid ligt in den aard zelf van het onderwerp. Waarneming in de natuur en experiment in den proeftuin of in het laboratorium hebben al spoedig geleerd hoe de …

Eine Neue Prosopis-Art Aus Palastina., J. D. Alfken

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Schwarz, Kopf kurz, rund, etwas breiter als lang, glanzend, Oberkiefer in der Mitte rotbraun. Oberlippe rotbraun, in der Mitte mit zweiteiligem, schwarzem Hockerchen. Clypeus fein langsgerieft und fein zerstreut punktiert, die Riefen und Punkte ineinanderlaufend, Vorderrand rotbraun gefarbt, in der Mitte dieser Farbung mit gelbem Fleck. Stirnschildchen grob runzelig punktiert. Wangen mit groBem, dreieckigem, gelbem Fleck, der oben und unten schmal rotbraun gesaumt ist. Wangenanhang nicht vorhanden. Stirn dicht und ziemlich stark punktiert. Augenfurchen den oberen Augenrand uberragend, etwas nach den Nebenaugen gebogen. Scheitel zerstreut und fein punktiert, hinten mit sehr kurzen Harchen besetzt, die Punktzwischenraume glatt. Schlafen fein langsgerieft …

Zur Kenntnis Der Lebenweise Von Sphex Pachysoma Kohl., Josef Fahringer

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Onze Metselbijen (Osmia), B. E. Bouwman

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Some Bees From Victoria, Mexico, T. D. A. Cockerell

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Zur Biologie Der Bienengattung Sphecodes Latr. (Hym.), Paul Blüthgen

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Descriptions And Records Of Bees — Xcviii, T. D. A. Cockerell

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Some Bees From British Guiana, T. D. A. Cockerell

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Some Colorado Bees, T. D. A. Cockerell

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