Life Sciences Commons^™

The Impact Of Meteors, John D. Boon

Field and Laboratory

Energy changes that occur when a meteor strikes the surface of the earth or the moon, are difficult to determine. The velocity of meteors is so much greater than that of molar masses with which we are familiar, such as projectiles of high powered rifles, that there is little basis for comparison.

Transportation Adjustments To Topography In Dallas, Texas, Edwin J. Foscue

Field and Laboratory

The outstanding physiographic feature of Dallas County is the White Rock Cuesta, which marks the western edge of the Austin Chalk limestone. Immediately below the chalk lies the easily eroded Eagle Ford Shale, hence the contact between the two strata is clearly marked by this westward facing cuesta, which extends from the southwest corner of the county to the middle northern border. The Trinity River, an antecedent stream, has cut a gap through the cuesta about midway between the northern and southern boundaries of the county…. The gap through the cuesta, and the narrowing of the Trinity River flood plain, …

Ichthyc Oil, John A. Riddick

Field and Laboratory

In the vicinity of Seefeld, in the Austrian Tyrol at an altitude of 1,000 meters lies a rock formation known geologically as Seefeld shale. It is found in veins varying in thick ness from 20 cm. to 100 cm. Enveloping this shale is the Gall enstein formation containing many fossil gastropods. The occurrence of this particular mollusk in large quantities dates the formation as Silurian. The Seefeld formation is a specific bituminous shale which yields a crude oil from which Ichtyhol is made. Centuries ago, the Tyrolian peasants would collect this shale, boil it with water in large pots, and …

A Century Of Scientific Exploration In Texas Part 1: 1820-1880, S. W. Geiser

Field and Laboratory

Science evolves and is perfected by the patient and criti cal labors of generations of investigators; and scientific progress is marked by an unending series of publications. To this fact, indeed, is due the perennial interest of the History of Science…. Texas has an almost unique place in the history of scientific exploration. This is probably owing to a number of singular coincidences.

The Araneida Of Dallas County: Preliminary Note, Sarah E. Jones

Field and Laboratory

Little is known of the. Araneida of the Southwest. The Peckhams (1909) made an excellent report on the jumping spiders of Austin, Te:x:as, and vicinity. The report on "Oklahoma Spiders" by Banks, Newport, and Bird (1932) is also helpful. This is particularly true for the northern part of Texas, for many of our species are listed in that report. Other miscellaneous publications, such as those on new species by W. J. Gertsch (1932-33) have added to our knowledge of the spider-fauna of this section. The present report is an abstract of a preliminary survey of Dallas County Araneida. The work …

Alumni Notes

Field and Laboratory

No abstract provided.

Rhythm In Blossoming, C. O. Rosendahl, A. O. Dahl

Journal of the Minnesota Academy of Science

No abstract provided.

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.

The Growth And Development Of Gemmae Of Marchantia Polymorpha L., Theodore F. Van Aacken

Bachelors’ Theses

Marchantia was discovered and studied around the middle of the seventeenth century. It was named Marchantia in 1683 by Jean Marchant in memory of his father. Later when Linnaeus completed his great work, Das Pflanzenreich (1786), he named the plant Marchantia polymorpha.

The Anatomy Of The Oyster, M.J. Rohlinger

Bachelors’ Theses

The phylum Mollusca manifests the following characteristics: bilateral symmetry; three primary germ layers; free-living and sessile; marine and fresh-water; a shell modified to form either a bivalve or a univalve which gives an appearance of segmentation due to rings of growth or arrangement of certain parts of the shell as is seen in the class Amphineura, this is only apparent metamerism because the Mollusca are considered to be unsegmented animals; a coelom poorly developed; a foot; a mantle cavity; well developed digestive, circulatory, excretory, and reproductive systems. When one inspects a Chiton, an oyster, a snail, an octopus, or a …

Topographical Anatomy Of Ostrea Virginica, Harry J. Barnett

Bachelors’ Theses

The oyster is important for at least three reasons. First, it is important to the zoologist; second, it is a food which has developed million dollar enterprises; and third, the oyster is a domestic resource for the pearl and its allied industries. The oyster is a bivalve Mollusk, having symmetry in the larval stage but losing it in the adult stage. It has one large adductor muscle, somewhat posterior from the ligament which holds both valves together. The left valve forms a deeper pit than the right one as it is in the left valve that the oyster lies. It …

Whole Issue Nebraska Bird Review (April 1936) 4(2)

Nebraska Bird Review

Contents

A Study of the Distribution, Migration and Hybridism of the Rose-breasted and Rocky Mountain Black-headed Grosbeaks in the Missouri Valley Region. By Myron H. Swenk .............27

General Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 41

Editorial Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . …

Bulletin No. 271 - Fertility Maintenance By Rotation And Manure, D. W. Pittman

UAES Bulletins

For several years there has been maintained on the Greenville Farm of the Utah Experiment Station an experiment to determine the relative value of different cropping systems and manurial treatments in maintaining the fertility of the soil.

Bulletin No. 269 - Farm Versus Village Living In Utah, Joseph A. Geddes

UAES Bulletins

This is the second of a series of bulletins based on a study of Utah village life which was begun in 1927. The purpose of the investigation was to determine, under prevailing conditions, whether for farm people farm-living is less desirable than village-living. Four type villages were selected in as many counties for field studies.

The Effect Of Pregnancy And Parturition On The Weight Of Dairy Cows, R. F. Morgan, H. P. Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A study was made of the effect of pregnancy and parturition upon the weight cycle of dairy cows of the Ayrshire, Guernsey, Holstein, and Jersey breeds according to gestation periods from data accumulated from records for the period 1922 to 1934 of the dairy herd of the Dairy Husbandry Department of the University of Nebraska. The weights of the cows were obtained from three consecutive weighings made at the middle of each month and daily weighings beginning at the 265th day of pregnancy and continuing for 30 days after calving. A total of 656 separate gestation periods were tabulated according …

North And South Dakota Horticulture, March 1936, North And South Dakota Horticultural Societies

North and South Dakota Horticulture

Volume 9, Number 3

The Evening Grosbeak, O.A. Stevens
N.D. News Letter, A.F. Yeager
The Wayzata Strawberry, J.D. Winter
President's Corner, F.X. Wallner
Sweet Rocket, etc. A.L. Truax
Forestry Views, D.D. Baldwin
Fruits in Manitoba, W.R. Leslie
Secretary's Corner, W.A. Simmons
N.D. Notes, V. Lundeen

Letter From E. D. Sinclair To S. B. Simmins. List Of Former Students, E. D. Sinclair

Documents

Letter from E. D. Sinclair to S. B. Simmins, concerning school opening. List of former students.

Letter From J. H. Rumph To S. B. Simmons. List Of Former Students, J. H. Rumph

Documents

Letter from J. H. Rumph to S. B. Simmons, concerning former students. List of former students.

A Study Of The Evaporation Of Small Drops And Of The Relationship Between Surface Tension And Curvature, Leon J. Shereshefsky

Faculty Reprints

No abstract provided.

A Study Of The Evaporation Of Small Drops And Of The Relationship Between Surface Tension And Curvature, Leon J. Shereshefsky Howard University, Sylvia Steckler

Department of Chemistry Faculty Publications

No abstract provided.

Bulletin No. 267 - Muck-Soil Management And Crop-Production Studies: Sanpete County Experimental Farm 1927 To 1933, Inclusive, Le Moyne Wilson

UAES Bulletins

The muck soil area in Sanpete County, where these investigations were conducted, comprises approximately 6500 acres, 4209 of which are included in the San Pitch Drainage District. This region is located in the south end of Sanpete Valley and west of the towns of Ephraim and Manti. During part of the year the lands involved were subject to overflow by the San Pitch River. Water covered most of the area early in the winter, and during the spring months high water kept it submerged until June. Before the neighboring communities were settled by white people, this area was probably submerged …

Bulletin No. 270 - Soil-Management And Crop-Production Studies, I. D. Zobell

UAES Bulletins

Carbon County is the greatest bituminous coal-producing district in the state and ranks as one of the largest and best in the Intermountain West. In 1934 there were twenty-six operating coal mines from which approximately 5,000,000 tons of coal were mined each year. These mines create work for hundreds of men. Many people in this section farm in the summer and mine during the winter months. In 1934 but 20,000 acres of land in this section were under cultivation, with little possibility of reclaiming additional land. Prior to 1928 crops had been somewhat restricted on account of the limited water-supply; …

Bulletin No. 268 - Alfalfa Seed Investigations And Other Crop Varietal Studies: Millard County, Utah 1929 To 1933 (Inclusive), George Whornham

UAES Bulletins

The Delta Area, in which most of the alfalfa-seed investigations and crop studies reported in this bulletin were conducted, is located in Millard County which is in the west-central part of Utah. This area lies in the Sevier Desert, within the eastern boundary of the Great Basin in the northeastern part of the county.

Parts of the area, particularly the farming sections near the towns of Oasis, Deseret, and Hinckley, have been among the oldest and most consistent alfalfa-seed producing sections of the United States. The peak of alfalfa-seed production in Millard County was reached in 1925, when approximately 14,000,000 …

North And South Dakota Horticulture, February 1936, North And South Dakota Horticultural Societies

North and South Dakota Horticulture

Volume 9, Number 2

The Purple Finch, O.A. Stevens
North Dakota News Letter, A.F. Yeager
Hardy Apricot and Other Fruits, Dr. N.E. Hansen
President's Corner, F.X. Wallner
Beekeepers Meet, J.A. Munro
My Favorite Perennials, A.L. Truax
Secretary's Corner, W.A. Simmons
North Dakota Notes, Victor Lundeen
The Prickly Poppy, Claude A. Barr

In Praise Of Parasitism, E. M. Freeman

Journal of the Minnesota Academy of Science

No abstract provided.

Nutritional Studies Of Protozoa, Alfred M. Elliott

Journal of the Minnesota Academy of Science

No abstract provided.

Breeding Better Flax Varieties For Minnesota, A. C. Arny

Journal of the Minnesota Academy of Science

No abstract provided.

Will Pine Or Aspen Dominate Minnesota Forests?, Hardy L. Shirley

Journal of the Minnesota Academy of Science

No abstract provided.

A Comparative Study Of The Origin And The Cytological Development Of Some Legume Nodules, Fred W. Bieberdorf

Journal of the Minnesota Academy of Science

No abstract provided.

Observations And Experiments On Diseases Of Plants In Hyderabad State, India, Syed Vaheeduddin

Journal of the Minnesota Academy of Science

No abstract provided.