Digital Commons Network^™

An Additional Record Of The Salamander Amphiuma In Texas, Lawrence Curtis

Field and Laboratory

No abstract provided.

A New Species Of Metapterus (Hemiptera, Reduviidae), Joe C. Elkins

Field and Laboratory

No abstract provided.

Whole Issue Nebraska Bird Review (April 1951) 19(2)

Nebraska Bird Review

Table of Contents

Birds of Chadron State Park, Doris Gates ... 19

News and Notes ... 23

Hawks and Owl Photographs, Adrian C. Fox ... 24

Twenty-five Year Summary of Bird Migration in Nebraska, Part 5 William F. Rapp, Jr. ... 26

Book Review ... 28

County Bird Clubs, Wilson Tout ... 29

Additions to the N.O.U. Library ... 30

Announcement ... 30

General Notes ... 31

The Coal Skink, Eumeces Anthracinus Baird, In Texas, Donald Tinkle, Lawrence Curtis

Field and Laboratory

No abstract provided.

Notes On Texas Compositae - Vii, Lloyd H. Shinners

Field and Laboratory

No abstract provided.

Notes On The Turbellarian, Procotyla Fluviatilis Leidy, John Maxwell Anderson

Field and Laboratory

The observations here briefly presented should help solve a question in the literature, regarding the cocoon of Procotyla fluviatilis. The results also indicate that the breeding season of this species may be longer than heretofore reported. A few additional observations on the young worms, and on food habits of the adult are also included.

Effect Of Temperature-Change Upon Egg-Production In Lymaea Palustris (Mueller), Elmer P. Cheatum

Field and Laboratory

No abstract provided.

A Female Neallotype Of Emesaya Incisa Mcatee & Malloch (Hemiptera, Reduviidae), Joe C. Elkins

Field and Laboratory

No abstract provided.

Chagas Disease And Vectors In North Central Texas, Joe C. Elkins

Field and Laboratory

All members of the large hemipterous family Reduviidae are predacious, but only members of the subfamily Triatominae feed exclusively on vertebrate blood. Readio (1927) noted that Mr. J. R. Lembert observed the common Pacific Coast species of Triatoma feeding on carrion and excrement. Lutz (1918) reported that Triatoma sanguisuga LeConte feeds on insects, including grasshoppers and potato beetles. Apparently neither of the above accounts illustrate normal feeding habits.

The Biology Of The Goldenrod Gall-Fly, Eurosta Solidaginis (Fitch), Blanchard O. Krogstad

Journal of the Minnesota Academy of Science

No abstract provided.

A Method Of Demonstrating Corneal Mitosis (After The Method Of Gay And Kaufmann), Ernest Swanson, Shirley P. Miller

Journal of the Minnesota Academy of Science

No abstract provided.

Ecological Studies In A Midwestern Range: The Vegetation And Effects Of Cattle On Its Composition And Distribution, J. E. Weaver, G. W. Tomanek

Department of Agronomy and Horticulture: Faculty Publications

There is continued need for a better understanding of range vegetation and its use by range animals. Range preservation and improvement in the midwest are largely matters of wise use and proper management of our natural grasslands. A more comprehensive understanding of the range itself is needed--its forage, soil, and water supply, and factors influencing a proper distribution of livestock. The degree of utilization of forage that will result in the maintenance of excellent or good range condition and the improvement of a range in fair condition should be ascertained. Soil conservation on range lands is accomplished primarily by improvement …

A Study Of The Effects Of Electrical Stimulation, Gonadotrophin, And Thymus Upon The Metamorphosis Of Ambystoma Tigrinum Baird, Leon J. Butterfield

Biology ETDs

It was the purpose of this study, (1) to measure the polarization of zodiacal light, (2) to investigate the orientation of the plane of polarization, and (3) to deduce from results obtained information concerning the origin of zodiacal light.

Method Of Calculating Exposures For Photomicrographs, Harold M. Hefley

Journal of the Arkansas Academy of Science

No abstract provided.

Freshwater Sponges In Arkansas, David Causey

Journal of the Arkansas Academy of Science

No abstract provided.

A Preliminary Investigation Of The Species Of Water Mites Of The United States Rocky Mountain Region And Vicinity Of Albuquerque, New Mexico, David W. Bergstrom

Biology ETDs

The primary purpose of this research problem is to give a preliminary accounting of the species of Hydracarina or water mites found at several mountain localities in Colorado, Wyoming, Utah, Montana, and New Mexico. In general, since the collecting was confined to altitudes above 4500 feet, the results of this problem constitute a survey of some of the highest forms of water mites of the United States.

Preliminary Report On The Hepaticae Of Arkansas, Eugene B. Wittlake

Journal of the Arkansas Academy of Science

No abstract provided.

Effect Of Sodium Azide On Water Transfer In Root Tissue, Germaine Rachaner

Journal of the Arkansas Academy of Science

No abstract provided.

Mycologist Views The Individual, Delbert Swartz

Journal of the Arkansas Academy of Science

No abstract provided.

Notes On The Agave Feeders Of The Genus Megathymus (Lepidopter Rhopalocera, Megathymidae), H. A. Freeman

Field and Laboratory

Life histories of most of the species of Megathymus long have been associated with the genus Yucca; but John A. Comstock & Charles M. Dammers found that Megathymus stephensi Skinner has as its food plant a certain species of the genus Agave (Bull. So. Calif. Acad. Sci., XXXIII, 1934). Later, it was found that another species of Megathymus feeds in the larval stage upon agave. Although I have been unable to find any published note on the feeding of Megathymus mariae B.&B. upon Agave lecheguilla Torrey, lepidopterists have known this fact for a considerable time. There remain four species of …

The Texas Species Of Psoralea (Leguminosae), Lloyd H. Shinners

Field and Laboratory

Twenty-five species and two varieties of Psoralea, dis­ tributed among three segregate genera, were recognized from Texas by Rydberg (1919) and by Tharp and Barkley (1945, 1946). Fourteen species and four varieties, of which one species and three varieties are newly described, are recognized in the present synopsis, all treated under Psoralea. For the most part the dismemberment of the genus is entirely reasonable as far as Texas species are concerned.

Notes On The Genus Yvretta Hemming With A New Record For The United States (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman

Field and Laboratory

No abstract provided.

Distributional Notes On Papilio Palamedes Drury, And Its Subspecies Leontia R.&J., H. A. Freeman

Field and Laboratory

No abstract provided.

Moss: Flora Of Maine, Robert N. Miller

Maine Collection

Moss: Flora of Maine

by Robert N. Miller

Gorham State Teachers College, Gorham, Maine, 1951.

Contents: What Are Mosses? / Moss Groups / Suggestions for Collecting, Mounting and Preservation of Moss Specimens / Over-All Pictures of the Capsules and Setae / Types of Leaves / Glossary / Outline Key to Some Maine Mosses

Forest Fires In The Northern Rocky Mountains, J S. Barrows

The Bark Beetles, Fuels, and Fire Bibliography

This is a report on an analysis of 36,000 forest fires in the northern Rocky Mountains. The analysis was made to gain a better understanding of the occurrence, behavior, control, and effects of fires, and in turn to obtain essential information required for improved planning and management of fire protection systems. The results present answers to these questions: 1) What is the magnitude of the regional fire problem? 2) What are the basic features of fire behavior under various topographic, fuel, and weather conditions? 3) What have been the results of organized fire control programs including fire prevention, detection, communication, …

The Effects Of Thermal-Neutron Irradiation Of Maize And Barley Kernels, John W. Schmidt, E. F. Frolik

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is the purpose of this paper to report the effects of thermal-neutron irradiation of maize and barley kernels on subsequent germination, plant establishment, and early plant development. Comparisons are made with equivalent neutron treatments of maize pollen, results of which have been reported in part in previous publications.

New Skipper Records For Mexico (Lepidoptera, Rhopalocera, Hesperiidae), H. A. Freeman

Field and Laboratory

No abstract provided.

Whole Issue Nebraska Bird Review (January 1951) 19(1)

Nebraska Bird Review

Table of Contents

Frontispiece

Ani· The Rare Tropical Bird, W. Le Roy Wilcox ....................... 1

Twenty.Five Year Summary of Bird Migration in Nebraska, Part 4, William F. Rapp Jr .......................... 3

General Notes ............................................................... 9

Announcements .....................................11

Pictorial Study of a Nesting Plover· Roy S. Wycoff, Lexington, Nebraska ................12

Obituary: Mrs. Louise Grier, L. O. Horsky .......................14

Book Reviews ........................14

Membership List ................................ 15

The Affect Of Indole-3-Acetic Acid On The Fission Rate Of Paramecium Caudatum, Margherita L. Baker

Student Scholarship

This research report, authored by Margherita L. Baker in 1951, investigates the physiological effects of the plant growth hormone indole-3-acetic acid, also known as heteroauxin, on the fission rate of the protozoan Paramecium caudatum. The study is grounded in the hypothesis that if plant hormones can influence animal growth, it suggests a fundamental similarity in the growth mechanisms between the two kingdoms. The experimental procedure was divided into two distinct series to observe how varying environmental conditions and food availability influenced the hormonal impact. 

In the first series, paramecia were maintained in a nutrient-rich beef extract medium with an abundant …

The Bionomics Of The Culicidae Of The Dallas Area, Ottis L. Mccleskey

Field and Laboratory

Little work has been done on Texan mosquitoes. In 1922 Dyar listed 43 species from Texas, 10 of which were recorded from near Dallas. Cushing (1934) listed the mosquitoes of Brazos County. McGregor & Eads (1934) in their work on the mosquitoes of Texas, divided the State into 17 approximately equal areas. They gave a total list of 54 species, of which 19 were reported from the area that included Dallas County. Fisk & LeVan (1941) published notes on the mosquitoes of Brownsville. The State Health Department of Texas published (1944) a booklet, "The Mosquitoes of Texas", which is the …