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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.

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.

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, …

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.

Amoeba, External Parasites On Hydra, Wendel Luetmer

Journal of the Minnesota Academy of Science

No abstract provided.

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.

A Determination Of Nicotine In Tobacco, Raymond L. Boelter

Bachelors’ Theses

Nicotine or nicotin, named from Jean Nioot who introduced the tobacco plant into France in 1565 is the characteristic alkoloid of the tobacco plant, Nicotiana tobacum, in all parts of which it occurs to the extent of from six tenths of one per cent, to four and eight tenths per cent.

The Inheritance Of Some Human Traits, Robert H. Crawford

Bachelors’ Theses

Although the proper collection and observation of necessary data with reference to the application of Mendel's laws of heredity to man has been brief, it has disclosed evidence significant enough to make it appear highly probable that many of the characters in man follow these laws as well as do the traits of lower animals.

The object of this thesis was to determine whether or not certain human traits were inherited, the mode of their transmission from parent to offspring, and, if possible, the establishment of any proof of linkage in the human line.

Muscles Of The Forelimb And Pectoral Girdle Of The Spiny Soft-Shelled Turtle, Amyda Spinifera, Joseph Volk

Bachelors’ Theses

The order Chelonla Is characterized by an exo-skeleton formed by a somewhat cupshaped, oval carapace on the dorsal surface and a roughly rectangular, flat plastron on the ventral surface, which are united at their lateral edges, between the fore and hind limbs by structures of similar composition, the bridges.

Distribution Of The Human Blood Groups Among The Pueblo Indians Of New Mexico, Waldemar D. Schaefer

Biology ETDs

The purpose of this paper is to show the distribution of the human blood groups among the Pueblo Indians of New Mexico. Upon reviewing all available literature concerning the distribution of the human blood groups, it was noticed that very little work had been done on the American Indian. Most of this work, although indicative of what really exists, cannot be accepted because of the insufficient number of Indians integrated and the failure to use an accepted standard method. In work that had been done previously, little attempt was made to secure a single homogeneous group of American Indians. Any …

Vegetative Changes In The Middle Rio Grande Conservancy District, Marjorie Van Cleave

Biology ETDs

This paper is concerned with the changes in the vegetation of the Middle Rio Grande Valley resulting from the lowering of the water table in the soil adjacent to the river. The Rio Grande has for a long time carried a heavy suspension of silt which is deposited as the river pursues its course southward to the Gulf of Mexico. The channel of the river has been raised as the result of this deposition until in many cases it has reached a level above that of the surrounding valley, and when this condition was attained the river diverted to a …

The Algae Of A Transient Lake In Kentucky, Fred Mutchler

Masters Theses & Specialist Projects

The present taxonomical study was undertaken with the view of obtaining additional information on the occurrence and distribution of algae in Kentucky. The investigation was begun in February 1934 under the direction of Dr. H.L. Stephens of the Western Kentucky State Teachers College. During the next three months 110 collections of algae were made and analyzed.

Bacteria & Nitrate Nitrogen Content Of The Water Of Barren River, Gilbert Westerfield

Masters Theses & Specialist Projects

A quantitative study of bacteria and nitrogenous compounds of Barren River in Warren County, Kentucky, was undertaken to determine the relation between the number of bacteria and the amount of nitrate nitrogen found.

Studies On A Cave Fish Of Uncertain Classification, Jennie Miller Orr

Masters Theses & Specialist Projects

The specimens studied during this investigation were taken incidentally during a general faunal survey of certain peculiar streams flowing from underground channels. On casual examination it was evident that they belonged to the cave fish group but were not the well known almost colorless blind variety. After checking the descriptions in various vertebrate manuals it appeared that they were probably a new species.

There are three groups of cave fishes, the non-blind, the semi-blind and the blind. Chologaster, or the Rice Field Minnows of South Carolina, are members of the non-blind group. Forbesichthys of southern Illinois and Kentucky is an …

Studies In The Development Of Tissue In Helianthus Annuus, L., Theodore Riedeburg

Bachelors’ Theses

The common sunflower, Helianthus annuus, L. is a member of the Compositae and a native of the Great Plains region of the United States. It is an annual herb, with a rough hairy stem three to fifteen feet high, broad, coarsely toothed rough heartshaped leaves three to twelve inches long and heads of flowers three to six inches wide in wild specimens and often one foot or more in cultivated plants. The plant is economically important, for its leaves are used as fodder, the flowers yield a yellow dye, and the seeds contain oil and are used for food. …

The Bottom Fauna Of Drakes Creek: A Quantitative & Qualitative Study, Theodore Milam

Masters Theses & Specialist Projects

An ecological study of the invertebrate animal forms exclusive of microscopic forms found in the waters of Drakes Creek in Warren County, Kentucky, was undertaken for the purpose of determining both the nature and amount of invertebrate animal life found in these waters. The Kentucky Fish and Game Commission has made several plantings of game fish in the waters studied. However, the fishermen report no appreciable increase of the fish life in these waters. In view of the failure of the fish to propagate properly in these waters, and because the other physical factors appeared favorable for the propagation of …