Life Sciences Commons^™

Evidence For A Tryptophane Cycle In Neurospora, Francis A. Haskins, Herschel Mitchell

Department of Agronomy and Horticulture: Faculty Publications

The work of Snell on lactic acid bacteria provided the first evidence that anthranilic acid may act as a precursor to tryptophane in vivo. Since the strains of bacteria which utilize anthranilic acid in the place of tryptophane also use indole, it was not possible to establish the order in which these two precursors occurred. In 1943 Tatum, Bonner and Beadle found that anthranilic acid was accumulated in the culture medium by a Neurospora crassa mutant, strain 10575, which required either tryptophane or indole for growth. It was therefore indicated that anthranilic acid is a precursor to indole in …

Separation Of Enzymes On The Filter Paper Chromatopile, Herschel Mitchell, Malcom Gordon, Francis A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

A recent report from this laboratory described a method for isolation of low molecular weight compounds by chromatography on a pile of filter paper disks (1). Preliminary experiments have now been completed on the application of this method to the separation of enzymes. It was expected that a mixture of enzymes could be placed near the top of a filter paper pile and fractionated by imposing a gradient (i.e. pH, organic solvent, or salt concentration) on the column, thus taking advantage of a continuous process. Following the observation of Tiselius (2) it also seemed probable that enzyme separations could be …

A Metabolic Relationship Between The Aromatic Amino Acids, Joseph F. Nyc, Francis A. Haskins, Herschel K. Mitchell

Department of Agronomy and Horticulture: Faculty Publications

The present work involves a further investigation of a Neurospora mutant, C-86, previously mentioned by Lein, Mitchell and Houlahan (1) as one that can utilize anthranilic acid, indole, tryptophan, kynurenine, 3-hydroxyanthranilic acid, and nicotinic acid as supplements for growth. Mutant C-86, when crossed to a “wild-type” strain, was found to differ from this wild type strain, with respect to tryptophan biosynthesis, by a mutation at a single locus. The evidence presented suggests the possibility of a common precursor to the aromatic amino acids.

Seed And Soil Treatments For Vegetable Crops Grown In Nebraska, M. W. Felton, J. E. Livingston

Nebraska Agricultural Experiment Station: Historical Circulars

Tests conducted during the past four years at the Nebraska Agricultural Experiment Station have shown that when seeds are planted in cold, wet soils, better stands of vigorous seedlings are generally obtained when the seeds are treated before they are planted.

Preliminary Geomorphological Studies Of The Lime Creek Area & Preliminary Report On The Lime Creek Sites: New Evidence Of Early Man In Southwestern Nebraska, C. Bertrand Schultz, Gilbert C. Lueninghuener, W. D. Frankforter

Bulletin of the University of Nebraska State Museum (1924–2023)

PALEONTOLOGICAL and archaeological discoveries were made near Cambridge, Nebraska, by the University of Nebraska State Museum field party in the spring of 1947 (Schultz and Frankforter, 1948, pp. 279-280) . Fossils and artifacts were found in situ at the base of a fifty-foot terrace on Lime Creek (University of Nebraska State Museum Localities Ft-41 and Ft-42) and on Medicine Creek just below the mouth of Lime Creek (Ft-50). Lime Creek is located (Fig. 1) in southwestern Nebraska in the southeastern part of Frontier County. It is a tributary of Medicine Creek which in turn is a tributary to the Republican …

Portable Electric Home Milk Pasteurizers, A. E. Baragar, P. A. Downs

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Two batch-type and one in-the-bottle type home milk pasteurizers were investigated to determine whether they comply with U.S. Public Health code temperature and time requirements for pasteurizers.

Prairies And Pastures Of The Dissected Loess Plains Of Central Nebraska, J. E. Weaver, W. E. Bruner

Department of Agronomy and Horticulture: Faculty Publications

Table of Contents:
Introduction
Geology
Physiography
Climate
Soil
Holdrege Silt Loam
Colby Silt Loam
Analyses Of Soils
Erosion
Root Relations
Early Settlement And Land Use
Native Vegetation
Communities Or Types Of Prairie
Short-Grass Type
Mid- And Tall-Grass Type
Mixed Short And Taller Grasses
Western Wheat Grass Type
Resume Of Grasses
Forbs
Shrubs
Pastures
Early Survey
Later Survey
Weedy Annual Grasses
Native Forbs
Subseres
E X Perimental Pastures
Methods
Sheen Pasture
Grazing Types
Grazing In 1945
Grazing In 1946
Comparison Of Consumption And Yield
McCan Pasture
Grazing In 1945
Grazing In 1946
Grazing In 1947
Comparison Of Consumption And Yield
Summary …

Observations On Cestodes In North American Owls With The Description Of Choanotaenia Speotytonis N. Sp. (Cestoda: Dipylidiinae), Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Little is known concerning the helminths parasitic in several major groups of the North American avifauna. This appears to be particularly true of the parasites of owls. Over the past few years the writer has had the opportunity of examining a fairly large series of these birds, and they have been found to be infected with several helminths of unusual interest (Chandler and Rausch, 1947).

Nebraska Bird Review (July-December 1948) 16(2a), Whole Issue.

Nebraska Bird Review

Contents

Migration Observers Wanted...........Chandler S. Robbins 72

Recent Changes in Nomenclature of Nebraska Birds...R. Allyn Moser 74

The Omaha Meeting of the American Ornithologists' Union...........75

Nebraska Birds in the G. D. Swezey Cabinet of Natural History at Doane College....William F. Rapp, Jr. 76

The 1948 Spring Season in the Crete Area............Rosetta A. Grefe 80

N.O.U. Co-operative Bird Migration and Occurrence List for the First Half of 1948............83

Obituary............91

General Notes............92

Announcements............96

Book Reviews............82, 98

Synoptic Revision Of The United States Scarab Beetles Of The Subfamily Dynastinae, No. 5: Keys To Tribes And Genera, Lawrence Saylor

Entomology Papers from Other Sources

This paper completes my studies covering a synoptic review of the United States dynastine scarab beetles, the preceding four parts having been published in this same JOURNAL.

KEY TO UNITED STATES TRIBES

The genera of the tribes Phileurini and Dynastini were covered in Part 4 of this series, and the genera of the tribe Cyclocephalini in Part 1. The tribe Oryctini was discussed in Part 2 and in Part 3 and was completed in Part 4; these eight United States genera of Oryctini may be separated as follows: KEY TO GENERA OF UNITED STATES ORYCTINI

SUPPLEMENT Euetheola subglabra Schaeffer Since …

Nebraska Bird Review (July-December 1948) 16(2b), Whole Issue

Nebraska Bird Review

Contents of Volume 16

Number 1

Birds of the Stapleton Area of Nebraska Mr. and Mrs. Earl W. Glandon .............1

Nesting of the Double-crested Cormorant in Nebraska Mrs. Carl N. Collister.............22

Christmas Bird Censuses Adrian C. Fax.............27

Observations on Same Eastern Montana Birds Wm. Youngworth …………38

General Notes …………51

Minutes of the Forty-seventh Annual Meeting …………57

Report of the Forty-fourth Annual Field Day …………63

Announcements …………65

News and Comment …………67

Book Review …………69

Obituary …………70

Trypsin Inhibitor. Vii. Comparative Nutritive Value Of Raw And Heated Soybean Meal For Poults, C. W. Ackerson, Raymond Borchers, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

I. The trypsin inhibitor contained in one-half of a lot of soybean meal was destroyed by autoclaving at 15 pounds for 20 minutes. 2. This portion of the meal when fed at a level of 24 per cent to newly hatched poults gave a significantly greater gain in five weeks than did an equal amount of meal in which the inhibitor had not been destroyed. 3. The difference in growth is attributed to the destruction of the trypsin inhibitor.

A Contribution To The Study Of Certain Avian Strigeids (Trematoda), Asa C. Chandler, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The examination of more than 200 species of birds by Rausch during the past few years, has disclosed a number of interesting strigeids, some of which are considered in the present paper. Three species appear to be undescribed and two of these are of particular interest in that they occur in passeriform birds, a group rarely parasitized by strigeids. In addition to the descriptions of the new species, remarks concerning Hysteromorpha triloba (Rudolphi, 1819) are included.

Synoptic Revision Of The United States Scarab Beetles Of The Subfamily Dynastinae, No. 4: Tribes Oryctini (Part), Dynastini, And Phileurini, Lawrence W. Saylor

Entomology Papers from Other Sources

This paper is the fourth in the series of my United States dynastine scarab beetle studies and completes the specific listings and notes. The fifth, and last, part will include a complete classification of the tribes and genera, from the Nearctic standpoint.

Genus Aphonus LeConte

Tribe DYNASTINI -- Genus Dynastes Kirby, Genus Megasoma Kirb

Tribe PHILEURINI -- Genus Archopbileurus Kolbe, Genus Phileurus Latreille

Distribution Of Microorganisms In The Soil As Affected By Plowing And Subtilling Crop Residues, Roy C. Dawson, Virginia T. Dawson, T. M. Mccalla

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this investigation was primarily to determine what effects rate and method of application of residues have on the distribution of microorganisms within the plow-depth layer of soil.

The Influence Of Length Of Storage Of Bovine Semen On Conception Rate Under Field Conditions, A. B. Schultze, H. P. Davis, C. T. Blunn, M. M. Oloufa

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is the purpose of this study to determine whether under conditions of routine handling in artificial breeding associations there is a decline in semen fertility from day to day and also to determine the magnitude of this decline. Tabulation of such data will not only be of value in determining the effect of frequent semen collection on the over-all artificial breeding results but will also serve as a basis of comparison in investigational work directed toward increasing the efficiency of artificial breeding.

Studies On The Parasitic Helminths Of The North Central States. I. Helminths Of Sciurida, Robert L. Rausch, Jack Tiner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

It is accepted that a fair degree of completeness is being achieved in our knowledge of North American mammals and birds. It can be assumed that nearly all the described species of the higher vertebrates are parasitized by helminths, but many of these helminths probably remain undescribed, and little is known of their geographical distribution. Very little information is available on the incidence of the parasites, or their effect on the host.

Block And Bridle Annual 1948

Block and Bridle Annual (1933–2021)

Initiations

The Nebraska Chapter of the Block and Bridle Club follows a definite procedure in conducting initiation of new members. Prospective members must file an application with the Club indicating their interest in the Club and in animal Husbandry. The Club then votes on the applications.

Sarcocystis (Aspergillus?) In Wood Warblers [General Notes], George H. Breiding, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

On August 9, 1944, near Columbus, Ohio, Breiding collected an immature male black and white warbler (Mniotilta varia). Upon preparing it as a study skin, the bird was found to be heavily infected with Sarcocystis. This experience was repeated with an adult male Mourning Warbler (Oporornis philadelphia), taken near Cheat Bridge, Randolph County, West Virginia, June 14, 1945. Both birds appeared to be in healthy condition.

Two species of wood warbler, the olive-backed warbler (Parula pitiayumi) and the American redstart (Setophaga ruticilla) have previously been recorded as hosts for this organism …

Strawberries In Nebraska, C. C. Wiggans

Nebraska Agricultural Experiment Station: Historical Circulars

The strawberry is more widely grown than any other fruit in Nebraska and is the most valuable of the small fruits. Its total value is greater than that of any of the other fruit crops grown with the exception of apples, cherries, and grapes. It thrives well in all sections where moisture is not too limited and is found almost always in home gardens. It is also produced commercially to some extent, especially near the larger cities in the eastern end of the state.

Dendrouterina Botauri N. Sp., A Cestode Parasitic In Bitterns, With Remarks On Other Members Of The Genus, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

A single cestode belonging to the genus Dendrouterina Fuhrmann, 1912, was taken from the small intestine of a least bittern, Ixobrychus e. exilis (Gmelin), collected by the writer on May 31, 1945, at Buckeye Lake, Ohio. Considerable difficulty was experienced in obtaining adequate material of this cestocde, although bitterns were collected in Ohio, Michigan, Wisconsin, and Manitoba. A second infected bird, an American bittern, Botaurus l. lentiginosus (Monatgu), was collected on April 24, 1947, at Horicon Marsh, Wisconsin. Three specimens of Dendrouterina were obtained from this bird.
Unfortunately, since refrigeration was not available in the field, the scolices of all …

Life Histories Of North American Nuthatches, Wrens, Thrashers And Their Allies: Order Passeriformes, Arthur Cleveland Bent

Papers in Ornithology

An attempt has been made to give as full a life history as possible of the best-known subspecies of each species and to avoid duplication by writing briefly of the others and giving only the characters of the subspecies, its range, and any -habits peculiar to it. In many cases certain habits, probably common to the species as a whole, have been recorded for only one subspecies. Such habits are mentioned under the subspecies on which the observations were made. The distribution gives the range of the species as a whole, with only rough outlines of the ranges of the …

A New Sciurid Of Blancan Age From Kansas And Nebraska, Claude W. Hibbard

Bulletin of the University of Nebraska State Museum (1924–2023)

The collecting of vetebrate fossils from deposits of Blancan age in Kansas, Nebraska, and Texas during the past twelve years has revealed many interesting forms. Some species have been found to have wide geographic distribution. A large sciurid related to the woodchucks has been recognized from both Kansas and Nebraska and is here described as a new genus and species.

Breeding Efficiency In Dairy Cattle From Artificial Insemination At Various Intervals Before And After Ovulation, George W. Trimberger

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The length of estrus and the time of ovulation were determined for 46 heifers and 86 cows of the Ayrshire, Guernsey, Jersey, and Holstein breeds by testing for end of estrus and ovulation at 2-hour intervals. Services were given by artificial insemination at various intervals before and after ovulation to determine the influence of this factor on the rate of conception. No significant breed or seasonal differences were found for length of estrus and ovulation time after end of estrus among the four dairy breeds represented in the experiment.

Annual Report: 1948

Cherry County (Nebraska) Extension: Historical Documents

Educational program of extension work was supported entirely from County Tax funds. The Budget for the coming year was raised to $3,475 from last years budget of $2975. This was very much appreciated, as it will allow a more complete extension service program. This is $25.00 under the $3500 calling allowed by the new bill L. B. 405

The annual meeting was attended by 164 people. The program which was held in the new 4-H building and at the experimental Station, consisted of a business session, four talks on current livestock problems, and a morning and afternoon session of witnessing …

Mima Mounds: A Reply, Victor B. Scheffer

United States Fish and Wildlife Service: Publications

Major Grant believes that gophers behave in one way, and we believe that they behave in another-or we admit that we do not know exactly how they behave. I have plainly stated (1947, PP. 293, 294) that our evidence is indirect; that we have not seen gophers building a giant mound; that we do not know whether mound building is a contemporary or a historic process; and that we do not know whether the stimulus for mound building is a hardpan or a high water table or both.

Our main contentions are that mounds of the Mima type occur only …

Changes In Vegetation And Production Of Forage Resulting From Grazing Lowland Prairie, J. E. Weaver, R. W. Darland

Department of Agronomy and Horticulture: Faculty Publications

When the early settlers came to Iowa, Nebraska, and adjacent territory they entered an almost boundless sea of grass. Throughout the years the prairie has been largely broken for crop production, but even today there still remain considerable tracts of native grassland annually mowed for hay and far greater ones of native pasture (Weaver and Fitzpatrick, '34). Climax grassland when grazed lightly or moderately may retain essentially its natural composition over extremely long periods. It is only when grazing animals are circumscribed in their range by fences and when too large a population is thus confined for too long a …

Nebraska Bird Review (January-June 1948) 16(1), Whole Issue.

Nebraska Bird Review

CONTENTS

Birds of the Stapleton Area of Nebraska
Mr. and Mrs. Earl W. Glandon...............1

Nesting of the Double-crested Cormorant in Nebraska
Mrs. Carl N. Collister..............22

Christmas Bird Censuses..............Adrian C. Fox 27

Observations on some Eastern Montana Birds....Wm. Youngworth 38

General Notes..............51

Minutes of the Forty-Seventh Annual Meeting..............57

Report of the Forty-Fourth Annual Field Day ..............63

Announcements ..............65

News and Comment ..............67

Book Review.............. 69

Obituary..............70

Mule Deer Record For Minnesota, Harvey L. Gunderson

University of Nebraska State Museum: Mammalogy Papers

During the hunting season of 1947, Leonard Nygren shot a deer near Pillager, Cass County, Minnesota. The deer, which weighed 153 pounds dressed, was disqualified in a sportsman's contest because it was not considered a white-tailed deer, according to a newspaper report. The report was investigated and the animal in question was identified as a mule deer, Odocoileus hemionus. This extends the known range of this deer in Minnesota nearly 100 miles to the east. John Jarosz, Museum Preparator, and the writer went to Nygren's place nine miles north of Pillager and measured and skinned the animal which is …

Trypsin Inhibitor. V. Nutritive Value Of Treated Soybean Oil Meal And Some Characteristics Of The Trypsin Inhibitor In Soybeans, Raymond Borchers, W. E. Ham, R. M. Sandstedt, C. W. Ackerson, R. H. Thayer, F. E. Mussehl

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The marked improvement in the apparent nutritive value of soybean protein after heating has long been recognized. The fundamental cause of this improvement has never been fully understood. Furthermore, commercial soybean oil meal varies considerably in nutritive value although heat treatment is common in most processing plants. Since heating is generally regarded as deleterious to the nutritive quality of protein, the following investigations of various treatments of soybean oil meal are of particular importance in developing a soybean or soybean oil meal of maximum and uniform nutritive value.