Biology Commons^™

Seasonal Variation Of The Pigment Content Of Acer Saccharum & Tilia Americana, James Major

Masters Theses & Specialist Projects

Leaves of the sugar maple and the American linden were selected. Since it was impossible to control environmental factors in any way, trees growing in close proximity were used. A sugar maple and an American linden growing near the entrance to the circular drive between Ogden Hall and Snell Hall on the campus of Western Kentucky State Teachers College, Bowling Green, Kentucky, fulfilled the above conditions.

The Reptiles Of Cherokee County, Kansas, Myron Alec Hurd

Electronic Theses & Dissertations

Cherokee County has an area of 585 square miles. The greater part is covered with hydrophytes and mesophytes, but there are some Xerophytic areas. A large part of its area is covered with typical prairie grassland. Thickets of plum, sumac, persimmon, hawthorne, blackberry, and buck brush occur in pastures and wastelands. Along the streams may be found the elm-ask-oak assocations and other plants. Along the embankments may be found blackberry, sumac, and wild rose. Surrounding the ponds and marsh areas are rushes, reeds, button willows, and willows.

The mean annual temperature is 56 degrees fahrenheit. The three summer months average …

Pigment Migration In The Eye Of Forbesichthys Papilliferus, Harld Welborn

Masters Theses & Specialist Projects

Previous studies conducted in these laboratories showed the pigment in the eye of Forbesichthys papilliferus, when exposed to light, migrated from the stratum pigmenti into the layer of rods and cones. It was thought advisable to investigate this matter further. The following lines of investigation were conducted, viz:

1. to determine the rate at which the pigment migrates from the stratum pimenti into the layer of rods and cones when exposed to sunlight;
2. to determine the rate at which the pigment migrates from the stratum pigmenti into the layer of rods and cones when exposed to artificial light; and
3. to determine …

A Study Of The Stem Anatomy Of Aristolochia Sipho A., Rudolph F. Dobry

Bachelors’ Theses

Plant anatomy has been studied for over 265 years. The discovery of the plant cells by Robert Hooke in 1665m stimulated studies in regard to these structures.

Nervous System Of Felis Domestica, Rachel Creighton Mcavoy

Biology Honors Papers

This 34 page thesis examines the embryology, anatomy and histology of the nervous system of Felis domestica.

The Flora Of The Tasco Lake Region, Sheridan County, Kansas, Raymond W. Darland

Master's Theses or Doctor of Nursing Practice

It has been customary in writing theses dealing with taxonomic problems to collect data from an entire county. Having had occasion to collect botanical specimens from the Tasco Lake for work in biology at the Sheridan High School, the wealth of plant life to be found here became apparent. The area ranges from xerophytic forms on the uplands to the hydrophytic forms in the lake and marshes. Many of the latter have never been reported from Western Kansas. Collections in preserving fluid were made of the water forms found and specimens of the landforms were mounted on regulation-sized sheets properly …

A Study Of Some Phases Of The Gametophyte Of Preissia Commutata Nees, Marion Steuber

Bachelors’ Theses

The beginnings of the exact knowledge of the Hepaticae dates from the work of Hofmeister, who in 1350 to 1362 published important investigations on them. He discovered the egg cell in the archegonium, traced the sperm to the surface of the egg and showed that it was fertilized by the sperm.

Spermatogenesis Of The Albino Rat (Nus Norvegicus Albus), Norman A. Frankenstein

Bachelors’ Theses

This thesis deals with the inquiry opened by the fundamental discovery that the gamete nuclei, and hence, the two parents from which they are respectively derived, con­ tribute each a haploid or single group of chromosomes to the fertilized egg. Each act of fertilization doubles the gametic number of chromosomes; yet the number of characteristic of the species remains constant from generation to generation. Somewhere in the life cycle, accordingly, the diploid or somatic number must be reduced by one-half to the haploid or gametic number. The first explanation was that reduction took place by some process of degeneration or …

Types Of Vascular Arrangement In Some Homosporous Leptosporangiate Ferns, Grace Ann Kreuz

Bachelors’ Theses

The vascular structure of Leptosporangiate and Eusporangiate ferns has been studied by a number of Botanists.

Histological Study Of The Structure Of The Testis Of Rana Pipiens, John L. Friedl

Bachelors’ Theses

All the living organisms, be they plant or animal, act as a unit which implies that the various anatomical and physiological systems are coordinated either for the benefit of the Individual itself or for the maintenance of the spe­cies. For convenience sake, the individual is divided into a digestive,. respiratory, circulatory, nervous, muscular, and skeletal systems; but there is one system which although of some value to the individual is primarily adapted for the production of other individuals, and this is the reproductive system.

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 …

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.

Amoeba, External Parasites On Hydra, Wendel Luetmer

Journal of the Minnesota Academy of Science

No abstract provided.

The Distribution Of Anopheles, Their Wintering Activities, And Breeding Places In Bernalillo And Valencia Counties, New Mexico, Bright Elsworth Grenier

Biology ETDs

An impetus was given to the study of the Culicinae by the discovery of Sir Ronald Ross in 1898 that some mosquitoes are the vectors of the malarial parasites. A large amount of work has been done with the species belonging to the tribe Anophelini and it has been learned that vectors of the malarial parasites of human beings belong to this tribe.

Quantitative Studies On The Relation Of Soil Texture, Moisture Content, Hydrogen-Ion Concentration, And Soluble Salts On Vegetation In The Albuquerque Division Of The Rio Grande Conservancy District, Marvin D. Rohovec

Biology ETDs

The middle Rio Grande Conservancy District was established in 1926, and occupies a portion of the Middle Rio Grande Valley one hundred and twenty-five miles in length and averages three and six tenths miles in width. It extends from White Rock Canyon, fifty miles north of Albuquerque, to the north of line of the Bosque del Apache Grant, fifteen miles south of Socorro. This area, which lies in Sandoval, Bernalillo, Valencia, and Socorro Counties, has an altitude ranging from 4500 feet to 5500 feet. A general arid condition exists in the area with an average precipitation of about eight inches …

Notes On The Life Habits Of The Silky Pocket Mouse (Perognathus Flavus Baird), Garth Blakely

Biology ETDs

The observations reported in this paper cover a period of six months' collection and study, lasting from November 1935 until April 1936, inclusive. While this report is not to be considered as a complete account of the life habits of Perognathus and while there are certain phases which have not yet been determined, it is hoped that the observations recorded here will constitute a useful contribution to the knowledge of the life history of this species.

A Preliminary Study Of The Mountain Lion (Felis Cougar), Frank C. Hibben

Biology ETDs

During one year's time from October 1934 and extending over into September 1935, an investigator was placed in the field to make a special study of the mountain lion. The agency which was so interested was the Southwestern Conservation League which had received funds from private sources for the purpose of the investigation. The scientific aspects of the project were carried on under the auspices of the Biology Department of the University of New Mexico, The New Mexico Game Department and the United State Biological Survey also helped and fostered the investigation by supplying the means through their separate agencies, …

The Phaenogams Of Western Kentucky University State Teachers College, Gertrude Raymond

Masters Theses & Specialist Projects

The campus of Western Kentucky State Teachers College was laid out in 1910 by Mr. Henry Wright, landscape architect, with the view of planting ornamental shrubs and woody and herbaceous plants indigenous to Kentucky. In more recent years the gardens on the grounds of the Kentucky Building have been planted with many species of Kentucky plants.

This study was undertaken for the purpose of making a scientific classification of the flowering plants on the campus of Western Kentucky State Teachers College.

A Comparative Pollution Study Of The Domestic Water Supply Of Warren County, Kentucky, Glenn Scott

Masters Theses & Specialist Projects

The domestic water supply of Warren County, outside of the city of Bowling Green, is obtained from deep wells and springs. The county is about evenly divided into a southern section of cavernous limestone and a northern section of mixed sandstone and limestone formations.

The wells of the southern cavernous limestone region receive water from unfiltered underground streams and lakes. Most of the wells of the northern region are drilled in sandstone and the water, in a majority of cases, is filtered through porous sandstone and shale.

The purpose of this study was to make a comparative pollution study of …

A Comparative Histological Study Of The Eyes Of Certain Cave Animals, William Owsley

Masters Theses & Specialist Projects

As early as 1850 many reports of observations of the blind cave animals were made by both scientific and popular writers. Tellkempf, Agassiz, Forbes and Silliman were some of the earlier scientists who studied the eyes of cave animals. Eigenmann made a histological study of the cave vertebrates of America. In a study of Forbesichthys papilliferus, a semi-blind cave fish, Jennie Miller Orr found important structural modifications in the eyes of this species. Since no comparative histological studies of the eyes of cave animals seem to have been made, it was decided to make such a study with a view …

Studies In The Development Of Tissue In The Stem And Leaf Of Pinus Edulis, Engelman, Eleanor Bartoszak

Bachelors’ Theses

Pinus edulis, Engelman commonly known as the two-leaved "Nut Pine", belongs to the genus Pinus of the tribe Abietineae which in turn is a member of the Pinnaceae family of the order Coniferales. The Coniferales constitute three-fourths of the present gymnosperms which comprise forty genera and approximately 350 species. The dominant conifers are the twenty-nine genera and approximately 245 species included
in the family Pinnaceae. In this family are found four tribes, Taxodineae, Cupressineae, Araucarineae, and Abietineae. This latter form includes nine genera and about 129 species.. The genera are Cedrus, found …

Some Monogenetic Trematodes From The Galapagos Islands And The Neighboring Pacific, Frank Grose Meserve

School of Biological Sciences: Dissertations, Theses, and Student Research

Introduction

Trematodes are parasitic, unsegmented, flattened (rarely cylindrical) worms. They have ventral, anterior, posterior or median attachment organs. The sense organs are poorly developed. The mouth is terminal or ventral and subterminal. The intestine is usually forked with or without lateral branches. The animals, with few exceptions, are hermaphroditic. The ovary is usually single. They have one, two, or more testes. The development is direct with only one host in the ectoparasitic Monogenea and indirect in the Digenea which have two or more hosts. The digenetic trematodes usually parasitize vertebrates which serve as their primary hosts and invertebrates (Mollusca) which …

Notes On The Distribution Of Amphibia And Reptilia Of Ellis County, Kansas, Lawrence A. Brennan

Master's Theses or Doctor of Nursing Practice

Comparatively little has been done concerning the listing or recording of the Amphibia and Reptilia of Ellis County, Kansas. What records there are of the species are for the most part unpublished. Early papers dealing with Kansas herpetology are few in number. Little has been done in Ellis and the surrounding counties, so there seems to be a need for such an ecological study as has been carried out in this paper “Notes on the Distribution of Amphibia and Reptilia of Ellis County, Kansas . " The objectives kept in mind in preparing this report have been to attempt to …

The Food We Have Never Seen, Walter S. Price

Biology Honors Papers

This 32 page thesis gives a brief history of vitamins, where they are found in abundance, and the effect of vitamin deficiency on the body from a nutritional standpoint.

The Nature And The Development Of Starch Grains In Seed Plants, Slyvester John Siudzinski Jr.

Bachelors’ Theses

In spite of the importance of the starch grain from many points of view little work has been done on its nature and development. This fact is interesting since the nature and the development of the starch grain claimed a large share of the attention of the early workers. They observed and described the starch grains from the earliest days of the compound microscope. It was then observed that starch from the different plants showed in many cases marked differences with regard to size, shape and structural markings of the individual grains.

The Weather Effect On The Characteristic Protein Values In Wheat, Mary Margaret Murphy

Bachelors’ Theses

Scientific investigation has proved conclusively that the protein content of the wheat kernel is the most important factor in determining the quality of the flour obtained. A high protein wheat is used for flour for bread making, and a low protein wheat for pastry flours. The quality of the protein must be determined by baking experimental loaves.

The year 1934 was a year of drought. In all parts of the country the wheat crops were affected by the lack of rainfall; hence, the protein value of the wheat must necessarily have been affected in some manner. The United States Department …

The Circulatory System In The Extremities Of The Domestic Cat From A Gross Anatomical Standpoint, Harold Liebenstein

Bachelors’ Theses

The mammalian circulatory system serves the prime purpose of furnishing the body with food to carry on its functions. The domestic cat is closely related anatomically and physiologically to the human being, which makes it an excellent animal for laboratory work or experimental purposes.