Life Sciences Commons^™

A Handbook Of Nebraska Grasses : With Illustrated Keys For Their Identification, Together With A General Account Of Their Structure And Economic Importance, E. Mead Wilcox, George K. K. Link, Venus W. Pool

University of Nebraska-Lincoln Extension: Historical Materials

The true grasses belong to the one family Poaceae, often called Gramineae, and constitute a very well defined natural group of plants. This family comprises upward of 3,000 species distributed among almost 300 genera. From the economic point of view the family is of supreme importance thru the fact that here belong the cereals, which supply a large part of the food of man, and the forage grasses which are so important as feed for our domesticated animals.

The genera and species are for the most part separated by artificial characters—a fact which renders their study and identification extremely difficult …

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

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No abstract provided.

Otacariasis In The Bighorn, Henry Baldwin Ward

Harold W. Manter Laboratory of Parasitology: Library Materials

Summary

The ear of a mountain sheep at Estes Park, Colorado, USA, was found to be heavily infested with a Sarcoptid mite which was not the common scab mite of domesticated sheep but is new in this country.

This form is similar to a mite found in the ear of goats in the Pyrenees and in the Congo. Nevertheless there is reason to consider it a new species and it is named Psoroptes cervinae.

The complaint to which it gives rise is likely to be serious if its effects are like those of the related European form. The Bighorn …

The Habits, Life History, And Structure Of A Blood-Sucking Muscid Larva (Protocalliphora Azurea), Albert Francis Coutant

Harold W. Manter Laboratory of Parasitology: Library Materials

While studying the blood parasites Halteridium and Proteosoma, and the Filaria of the common crow (Corvus americana), my attention was attracted by an external parasite of some young nestlings which were brought into the laboratory. Observations on this parasite, which proved to be the larva of Protocalliphora azurea (Fall.), form the basis of this paper. The parasite is the immature form of one of the so-called "blue-bottle" or flesh-flies, whose larvae are generally regarded as useful scavengers. More careful observations on the life-histories of many species, however, have shown that they may be, and often are, parasites …

Bulletin No. 138 - How To Control The Grasshoppers, E. D. Ball

UAES Bulletins

There is no longer any reason why a farmer or a community of farmers should allow their crops and meadows to be destroyed by swarms of grasshoppers. Our knowledge of their habits has increased and better methods of destruction are known, so that at the present time the grasshopper takes its place in the list of crop pests that can be controlled by those who desire to do so. In the old days when countless numbers of the Rocky Mountain locusts (M. spretus) settled down on the crops of the few scattering settlers of the plains or Intermountain region, there …

Bulletin No. 137 - The Quality Of Home Grown Vs. Imported Wheat, Robert Stewart, C. T. Hirst

UAES Bulletins

In 1907 a number of new varieties of wheat were introduced into Utah and have since been grown on the Nephi Experimental Dry Farm, under strictly dry farm conditions. In view of the well-known influence of environment upon the quality of the wheat it is of importance to study the effect of climatic conditions in Utah upon this introduced seed. Wiley (1) says: "The quality and properties of wheat depend more upon the environment in which it is grown than upon the species to which it belongs. There is perhaps no other field crop in which environment, namely, conditions of …

Bulletin No. 136 - The Commercial Production Of Sugar Beet Seed In Utah, Frank S. Harris

UAES Bulletins

History of the beet sugar industry: The production of sugar from beets is a new industry when compared with the length of time that most kinds of crops have been used by man. It was only about 150 years ago that sugar was extracted from beets even in the laboratory, and at that time the percentage of sugar was so low that the expense of extracting was more than the sugar was worth. Just a little more than 100 years ago the first beet sugar factories were built, but it was nearly fifty years after this time before the industry …

The Bee Genus Holcopasites Ashmead, J. C. Crawford

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This genus was established by Dr. Ashmead in Trans. Amer. Ent. Soc., vol. 26, p. 82, 1899, but no species was included. The material on which he based his description is in the U. S. National Museum and bears his manuscript name H. pratti. This, however, is the species described by Robertson as Philerenius illinoiensis, which species I select as the genotype. To this genus also belong Phileremus pulchellus Cresson, P. heliopsis Robert., and Neopasites robertsoni Cwfd. as well as the new species described below.

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

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No abstract provided.

Habits Of Xenoglossa Brevicornis, T. D. A. Cockerell

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No abstract provided.

Bees From The Philippine Islands, T. D. A. Cockerell

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No abstract provided.

The Real Trigona Dorsalis Smith Rediscovered (Hym.), T. D. A. Cockerell

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Notes On Some Bees From Virginia, T. D. A. Cockerell

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No abstract provided.

Andrena Angustior W.K., Eine Duetsche Biene, J. D. Alfken

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Eine Biene, dercn Vorkomrnen in Deutschland bisher noch nicht festgestellt, und die wahrscheinlich mu verkannt wurde, ist Andrena angustior W. K. Sie ist nahe verwandt mit A. gwynana W. K., mit der sie, wie aucb ilue noch naheren Verwandten A. rufula Schmied. und A. symphyti Schmied., in der Grofse und in der Farbung des Haarkleides fast ganz ubereinstimmt. Von A. gwyana unterscheiden sich die 3 genannten Arten sofort durch das wenigstens teilweise hell behaarte Gesicht, welches bei A. gwynana schwarze Haare tragt.

A Wasp Resembling A Bee (Hym.), T. D. A. Cockerell

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No abstract provided.

Algunos Ápidos Nuevos Ó Interesantes, José María Dumset Y Alonso

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No abstract provided.

Ápidos De Marruecos De Los Gén. Anthidiam, Nomada, Melecta, Crocisa, Cœlioxys Y Phiarus, José María Dumset Y Alonso

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No abstract provided.

Nota Sobre Los Ápidos De Marruecos, José María Dumset Y Alonso

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Uber Die Entstehung Der Eugsterachen Zwitterbienen Summary, T. Boveri

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No abstract provided.

Initiation Of Development In Nereis, E. E. Just

Department of Biology Faculty Publications

No abstract provided.

Citrus Talks-The Value Of An Orange Brand, Charles C. Chapman

Charles C. Chapman Citrus Speeches

Mr. Chapman presented this speech at the State Fruit Growers' Convention in San Bernardino. In it he talks about the importance of branding in the citrus fruit industry to develop the reputation of a growers' oranges and a customer base for their consumption. He claims that brand supersedes the variety and grade of the orange in importance for marketing purposes.

Natural Reforestation In The Mountains Of Northern Idaho, Harry B. Humphrey, John Ernst Weaver

Papers of John E. Weaver (1884–1956)

The factors affecting the natural reforestation of a fire-denuded area may, in general, be said to be the same in Idaho and Oregon as in Maine or Minnesota. There may be and actually are differences in detail as to what species of herbaceous and shrubby plants may prepare the way for the more delicate seedlings of those trees native to the particular locality. But the principle prevails everywhere that certain plants or plant societies. are antecedent and probably essential to the appearance and permanent establishment of a forest. The first step in the reforestation of a fire-swept area is the …

A Study Of The Root-Systems Of Prairie Plants Of Southeastern Washington, John Ernest Weaver

Papers of John E. Weaver (1884–1956)

While carrying on a study of the plant formations and associations of semi-arid southeastern Washington in 1912-1914, it soon became apparent that for a proper understanding of the development and structure of these associations a knowledge of the root-systems of the more important prairie species was imperative. Consequently, during the fall, winter, and spring of 1913--1914, more than 350 root-systems of 25 of the most important ecological species were examined. This paper contains descriptions of these, together with a discussion of the conditions under which the plants grow.

The prairies of southeastern Washington, and their eastward extension into adjacent Idaho, …

Anthrax Or Charbon: Points Of Popular Interest, Harry Morris

LSU Agricultural Experiment Station Reports

No abstract provided.

Initiation Of Development In Nereis, E. E. Just

Faculty Reprints

No abstract provided.

Guide To The Experiments In Cropping Now Running At The State Farms Of Narrogin, Merredin, Chapman, Geo L. Sutton

Grain and other field crops published reports

The publication of this Guide to experiments conducted at the State Farms is deemed desirable, in order that farmers may be made acquainted with the nature of the work and the progressive results obtained, The purpose of the alteration of practice initiated at the State Farms during the past three years is to carry on an original and definite plan for the improvement of agricultural methods, and to this end a series of experiments have been undertaken which would entail too much expense on the individual farmer, or involve a departure from his routine practice before the value of the …

Researches In The Genus Taraxacum, Paul B. Sears

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

These researches were undertaken with a view to working out certain little known phases of the life history of our local species of dandelion, and particularly with a view to confirming or disproving the following widely accepted conjecture of Raunkjiaer;

"Species Danicae Taraxaci castratione agamice propagari demonstratum est; species onmes Taraxaci semper parthenogenetice propagari verisimile est."

The problem has been found to involve difficulties and obscurities which will require considerable time to effectually disentangle, but results have already been secured which we believe ourselves justified in setting forth.

During the work we have been much in debt to the late …

The Insect Galls Of Cedar Point And Vicinity, Paul B. Sears

Papers in Ecology

The following list is based on rather careful collections made during the summer of 1914. Since the list contains many forms common throughout Ohio, I have aimed to make the synonymy fairly complete to date, as an aid to students, while the bibliography has been limited to original description (where possible) and some more recent notice which should be helpful.

In the course of this work I have become deeply indebted to Mr. W. J. Kostir, of Ohio State University, while Prof. Herbert Osborn, Prof. B. W. Wells, Prof. Myron Swenk, Miss Edith Patch, Mr. Nathan Banks and others have …

A Revision Of The Cestode Family Proteocephalidae, George Roger La Rue

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Introduction

Several years ago while studying under Professor Henry B. Ward .at the University of Nebraska the writer began an investigation of a cestode parasitic in Amblystoma tigrinum (Green). That investigation resulted in a paper (La Rue 1909) in which a number of points in the anatomy of Proteocephalids were cleared up and certain problems were -outlined for investigation at an early date. In the meantime the writer became interested in the large number of Proteocephalids which Professor Ward had secured by work in the field and by exchange. The writer had also made some collections. A preliminary study of …

New North American Bees Of The Genus Andrena, T. D. A. Cockerell, Henry L. Viereck

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No abstract provided.