Biology Commons^™

The Anatomy Of The Musculature Of The Necturus, Carl Henry Zeuner

Bachelors’ Theses

This paper is intended to discuses the dissection and complete anatomy of the musculature of the Necturus. The Nacturus was chosen, as it is the most characteristic of the order Urodela and it shows many fish-lite adaptations. However, there are definite and distinct changes over the muscles of the fish. The Necturus has walking, legs requiring muscles between the individual parts of the limbs as well as between the limbs and the body itself as is the oase in the fish.

Pituitary Gland Of Frog, Harold Joseph

Bachelors’ Theses

The endocrine or ductless gland system is one of the most important systems in the body of the vertebrates. The glands which comprise this system are the pancreas, which produces the insulin hormone; the thyroid, which secretes the throxin hormone; the parathyroid which produces the hormone known as the para-thormone; the adrenal glands which secretes cortin and adrenalin; the pineal gland about which very little is known; and the pituitary gland which produces many hormones, two of which, tethelin and pituitrin, are of great physiological importance. These hormones pass directly into the blood or lymph vessels and enter the circulatory …

Kidney Of The Frog, Felix Taubman

Bachelors’ Theses

The frog has been used exclusively in both high school and college as the main source of experimental biological and zoological studies. Because it is so easily obtained and so finely adapted to our purposes, we chose it as the specimen upon which to do our thesis work. Much has been done experimentally on the kidneys with the frog. The purpose of this thesis is to present a general view of the external and microscopic anatomy of the frog kidney and with this as a groundwork to present the problems of secretion; whether secretion is carried on by the renal …

Investigation Of The Proteolytic Power Of Soybean Brew Flakes Using The New Viscosimetric Method, Jon Kenneth Mccormick

Bachelors’ Theses

Progress along technical and scientific paths may be considered slow or rapid, depending upon the point of view taken. A survey of the artistic and technical achievements of the early Egyptians and Babylonians would lead one to believe progress to be rather slow. Yet, a consideration of the social scientific developments of the last century would lead one to deem progress as being very rapid. Unknown and perhaps unconsciously, progress is continually being made by that vast legion of unheralded scientists ·and technicians from which arise the notable authorities of the future.

A Study Of The Muscles Of The Arm And Upper Shoulder Of The Cat, Joseph Andrew Arena

Bachelors’ Theses

The work undertaken in this thesis is a study of the muscles of the shoulder and upper arm of the cat, special attention being paid to the origin, insertion, relations, action, innervation and blood supply of the muscles.

An Application Of Feulgen's Chromatin Stain To The Chromatin Material Of Sclerospora Graminicola, Elizabeth Annette Badalik

Bachelors’ Theses

Much work has been done up to the present time on the general staining of cells, but. the workers have been greatly limited in their attempts to stain one particular portion of a cell, such as the chromatin material, without staining the remaining portion of that same cell. The ideal stain should effect only the specified portion of the cell and the remaining portion which is not to be stained should remain stainless and void of color. There. has been a lack of reliable stain for differentiating the chromatin in the cytology of lower plants and Protista.

Practical Study Of The Musculatuer Of The Cat, Jack Lamalfa

Bachelors’ Theses

The author has tried his best, in this thesis, to review, to dissect, and to make a comprehensive study of the muscles of the lower limb of the cat. With this end in view, he has taken the natural advantages present, such as text books, outlines, and charts as means of attaining it.

The anatomy of the cat’s muscles laid bare in dissection would be incomplete and inadequate without the aid of photographs and illustrations. So with the help of Charles Wilbur, B.S., a fellow student, the author succeeded in making some excellent views of the muscles of the lower …

The Anatomy, Physiology, And Histology Of The Musculature Of The Pelvic Appendages Of Rana Catesbiana, Wilfred F. Horner

Bachelors’ Theses

The muscles of the frog leg have been worked on very extensively during the last thirty-five years. The reason the frog has been subjected to such an extensive study in research is the fact of its striking resemblances to man and also the fact that they are plentiful and easy to work with in all types of experiments. The structures of a frog are well developed and prove very efficient for study.

This specific field of work was picked for this thesis because of the interest to the author, the mag­nitude of work done in the field, and the importance …

The Spleen Of The Frog, Clifford F. Moran

Bachelors’ Theses

Although we of today are living In a relatively advanced state of civilization, there still remains to be solved by man many familiar mysteries. These are found not only in the physical order but in the chemical and biological as well. It seems that the greater strides man takes toward the solution of his difficulties, the more other ones crop up to plague him. With the conquering of such deadly diseases as Diphtheria, Malaria and Scarlet Fever, man once dared to dream about a universe free from sickness. Yet today we find that three others have arisen which are causing …

A Histological And Functional Study Of The Skin Of The Frog, Oscar Stern

Bachelors’ Theses

In recent years much has been written on the skin of the frog, however, it seems that little has been done to correlate the morphological and physiological aspects of the skin. The literature reveals that considerable work has been done on the common laboratory frog Rana pipiens.

The Gross Anatomy And Histology Of The Brain Of The Frog, George Howard Klumb

Bachelors’ Theses

The histology of the frog brain has been discussed at length in many sources, thus this work will be in the nature of a review of the previous material. However, all the work will be done on the actual sections of the frog brain, and the histological discussion will be preceded by a discussion of the gross anatomy, both internal and external; and the whole will be preceded by a short historical preface.

Salivary Gland Chromosomes Of Drosophila Melanogaster And The Bar Duplication In The Heterozygous Fly, Gertrude H. Tromp

Bachelors’ Theses

in view or the fact that salivary gland chromosomes are being so thoroughly studied at the present time, it is interesting to notice that as early as 1881 Balbiani reported the chromosomes in the Chironomus fly. He interpreted the "bands" which are of such importance to the cytologists today, as disks of chromatic material. The achromatic material he called "zwischensubstanz" or as it is now termed the matrix. Leydig (1883) also worked with the Chironomus fly. He thought that the "bands" were similar to muscle fiber striation. Carnoy (1884) believed the chromosomes were hollow cylinders and the chromatin arranged to …

The Effects Of X-Rays Upon The Roots Of Zea Mays, Bernard Louis Wolfe

Bachelors’ Theses

Since. the discovery of X-rays by Rontgen in 1895, the majority of published papers dealing with the influence of these rays on plant life have considered their general effects on physiological processes including rate of seed germination and growth, respiration, and movements. A large number of investigators have worked on the morphological and cytological aspects while comparatively few workers have been interested in the histological effects of the stimulated tissues. The purpose of this thesis is to show the histological, morphological, and cytological effects of X-rays upon the root tips or the Zea Mays as well as the effects these …

The Histology Of The Stomach Of The Frog Rana Pipiens, Eugene Anton Kampmann

Bachelors’ Theses

The common grass or leopard frog, Rana pipiens, lives in or near fresh-water lakes, ponds, and streams, and is distributed over the North American continent except on the Pacific slope. The frog has both scientific and commercial value. Frogs legs are highly prized by the epicure. In the laboratory, the frog is used in elementary courses in zoology to illustrate the characteristics of the vertebrates. Holmes very clearly states the present scientific value of the frog, "For a long time the frog has been a favorite object for the study of animal structure and function. Probably no species except …

The Skull Structure Of The Cat, Max Hoffman

Bachelors’ Theses

The subject dealt with in the following thesis is the skull structure of the cat. It is the purpose of the author to differentiate the parts of the skull and to become familiar with the many different sections as to origin, location and the functions.

The Histology Of The Alimentary Tract Of Cambarus Virilis, Arno Fred Michaelis

Bachelors’ Theses

The crayfish is a Decapod belonging to the class Crustacea of the phylum Arthropoda. The animal is used for scientific study because it possesses all of the characteristics of the phylum. It has three distinct body divisions, head, thorax, and abdomen; bilateral symetry, metamerism, jointed appendages, a chitinous exoskeleton, a dorsal heart with an incomplete circulatory system, and a nervous system of the annelid type. The crayfish is also used in the laboratory because of its abundance and the ease with which it is handled. The animal is of great economic importance due to its food value to man as …

The Histology Of The Small And Large Intestine Of Rana Pipens, Chester R. Mantey

Bachelors’ Theses

The Frog in past years and in most recent years, has been used to a great extent in the experimental sciences. In the field of physiology, the Frog becomes a great factor for experimental purpose. In addition, the science of pharmacology also makes use of the Frog in determining the actions of many drugs. But, this thesis will endeavor to take up the histology of an organ of Rana pipens, thus limiting the subject matter to this particular phase. It would only be proper at this time, to cite some of the important early workers in Histology. Bichat (1800) …

The Types Of Sterility And Related Phenomena With Special Reference To Convallaria And Tropaeolum Majus, Mary Cecilia

Bachelors’ Theses

The development of superior plants through breeding is one of the chief contributions of America to agriculture. Out of old stock, scientists have developed a large number of new forms with better quality, more productiveness, and greater resistance to disease and adversity. However, the surface has hardly been scratched and possibilities reach in interest are pushing forward the experimentations necessary for success in the science field.

A Proximate Analysis Of Some Wisconsin Grown Varieties Of Soybeans, Herman Paas Jr.

Bachelors’ Theses

Within the last ten years there has been a constantly growing demand for soybeans. This demand is a result of the many new uses to which the by-products of the bean have been put. At present there are many varieties of soybeans on the market and each of these varieties have different compositions and hence have different qualities. Chemists are working on these different varieties and are trying to find the variety that is best suited for certain purposes. Wisconsin, which is primarily an agricultural state, will be among the leaders in raising the soybean. The purpose of this investigation …

Cross-Section Anatomy Of The Male Frog (Rana Catesbiana) : A Transverse Section Through The Region Of The Eighth Vertebra, Arthur L. Guepe

Bachelors’ Theses

At the present time there does not exist a complete cross-section anatomical study of the common bull frog, Rana catesbiana. In fact, there has been very little mention in literature of any cross-section anatomy of any particular animal. However, there has been some work of this nature done in the study of human anatomy, especially the important publication of Eycleshymer and Schoemaker (1917), and in a small measure in the anatomy of the rabbit. This lack of literature on this certain topic, however, does not mean that the author had any intentions of presenting a complete cross-section study of …

Evidences Of Sterility In The Hyacinthus Orientalis L., Mary Adelbert

Bachelors’ Theses

In this paper, it will be the purpose of the writer to discuss the types of sterility found in the Hyacinthus orien­talis and to locate the causes of this condition in the flower, with a view to possible improvement of the plant for purposes of cultivation. In speaking of a type of sterility, reference is made to some well-defined and frequently recurring condition which breaks that chain of processes that leads normally to fruit and seed production.

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.

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 …

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 …