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A Cytological Study Of The Central Body In Oscillatoria Formosa And Oscillatoria Limosa, Ruth Joanna Dornfeld

Bachelors’ Theses

No abstract provided.

A Peripheral Vascular System As Seen By Means Of A Clark Window In The Ear Of The Rabbit, T. H. Seldon, R. H. Barrett, H. E. Essex

Journal of the Minnesota Academy of Science

No abstract provided.

A Human Hereditary Trait Appearing In Offspring From A Cousin-Marriage, C. P. Oliver

Journal of the Minnesota Academy of Science

No abstract provided.

A Key To Snakes Of Minnesota, Milton D. Thompson

Journal of the Minnesota Academy of Science

No abstract provided.

Growth Substances And Nutrition Of Protozoa, Alfred M. Elliott

Journal of the Minnesota Academy of Science

No abstract provided.

Light And Pituitary Activity In The Bird, Adolph R. Ringoen

Journal of the Minnesota Academy of Science

No abstract provided.

The Growth Rate Of Wall-Eyed Pike (Stizostedion Vitreum (Mitchill) In Various Lakes Of Minnesota, Samuel Eddy, Kenneth Carlander

Journal of the Minnesota Academy of Science

No abstract provided.

A Study Of The Structure Of Hair As A Means Of Mammal Identification, Earl R. Oyer

Master's Theses or Doctor of Nursing Practice

The hair of small and medium sized mammals is often found in the stomachs, feces and pellets of predators , for example in the stomachs and feces of coyotes and in the pellets regurgitated by hawks and owls. These pellets produced by hawks and owls and the feces of mammalian predators are the undigested residue of what these animals have eaten. If the hair from these sources can be identified, then much desirable information concerning the food of predators can be obtained. The purpose of this study has been to determine whether or not such identification is possible.

The Spinal Nerves And Spinal Cord Of The Frog, Laverne A. Penn

Bachelors’ Theses

The common grass frog, Rana pipiens as wall as the bull frog, Rana catesbiana have served during many decades as material from which both the student of zoology and the investigator in biological problems have gathered valuable information about the anatomy and physiology of the common systems. Among these systems the central, peripheral, and sympathetic nervous system plays a coordinating role, because of the ramifying nature of its organization. It is the purpose of this thesis to investigate the gross and histological structure of these branches known as spinal nerves. When one inspects the literature on the nervous system of …

The Fresh-Water Sponges Of Wisconsin, James Russell Neidhoefer

Bachelors’ Theses

The fresh-water sponges were observed but not recognized as animals at a very early period. The early investigators thought they were plants; later workers, colonial protozoa. In 1696, Leonard Plukenet first made public mention of them; and later, in i745, Linnaeus described them as Spongia and made mention of their, "globuli". After Linnaeus the term Spongia changed many times until, in 1816, Lamarck introduced the generic name Spongilla.

A Photographic Study Of The Musculature Of The Dog, Francis Joseph Millen

Bachelors’ Theses

In this thesis the author has endeavored to construct a realistic study of the muscles of the domesticated dog. It has not been his purpose to discover anything new, but rather to make a complete study and outline of the more important muscles of the dog's hind limb.

For references the author has selected two widely known comparative anatomy books. In order that a more complete understanding be had of the muscles themselves, their morphology and physiology, and their orientation, the author also employed the use of several smaller texts of lesser renown. A list of the texts used can …

The Muscles Of The Forelimb Of Canis Familiaris, Charles G. Wilber

Bachelors’ Theses

In the study of the anatomy of the vertebrates, there has been much work done and a large number of the forms have been studied with great thoroughness. Among the domesticated animals this is particularly true. The students of the veterinary sciences have given us a deep insight into the structure and function of the mammalian body. This is most certainly true in the case of the dog. The species Canis familiaris has been used for many years in the studies of physiology and surgery. However, it is also true that a plenitude of literature relative to the anatomy of …

The Lungs And Respiration In The Frog, Peter P. Strassburg

Bachelors’ Theses

In a wide sense, respiration is sometimes defined as the gaseous exchange constantly taking place between an organism and its environment. Essentially it is concerned with the intake of oxygen and the output of carbon dioxide but it also includes any other gas exchange that might occur. Small organisms take oxygen directly from the air or from the watery medium surrounding them into all parts of their structures. They also give off carbon dioxide from all their parts directly into the surrounding medium. They can do this successfully because they are small enough to have every cell in direct or …

Pancreas Of The Frog, Henry C. Boyer

Bachelors’ Theses

The pancreas has long been a subject of interest and speculation. It forms a favorable object for the study of secretory cells in general and has been used by various investigators who have studied the minute structure of the pancreas cell in relation to the secretory processes. Besides being a very active digestive gland it is the source of insulin; so that it is not surprising to find a vast amount of literature on the double function of the pancreas in general.

The Ovary Of The Frog, Wyman O. Bergner

Bachelors’ Theses

All living organisms, under proper conditions, are able to reproduce an organism of its own kind by the natural function of its reproductive system. Except in such cases where reproduction is assexual, there are always tow individuals, male and female, which produce two elements called the ovum and spermatozoa. In the vertebrate kingdom, the sperm unites with the ovum to form the new individual. This fertilized ovum is commonly referred to as the zygote, which produces the embryo from which the new individual is ultimately formed.

In this work the ovary is studied from several viewpoints: 1) anatomical; the size, …

Regeneration Experiments With Planaria Maculata, Frank J. Tornetta

Biology Honors Papers

This 25 page thesis discusses experiments to determine the effect of temperature on the rate of regeneration in planaria and to find the comparative rate of growth of sagittal, transverse and oblique sections.

Studies In Breaking The Rest Period Of Grass Plants By Treatments With Potassium Thiocyante And In Stimulating Growth With Artificial Light, Harold R. Shepherd

Master's Theses or Doctor of Nursing Practice

There has developed a need for a practical means of artificially breaking the rest period and of stimulating the growth of grasses so that sods can be procured early in the fall before freezing weather, brought into the greenhouse, and forced early to make an abundant vegetative growth. This need suggested the study of which this paper is the report, namely to discover whether or not the rest period of native grasses can be broken by treatment with potassium thiocyanate and their growth stimulated by artificial light supplemental to winter daylight.

Some Aspects Of The Physiology Of The Nephron, Christian Elwood Moser

Biology Honors Papers

This 31 page thesis examines the role of the nephron in kidney function.

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 …

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 …

Hiemenz's Study Of The Heron Lake Franklin's Gull Colony, George W. Friedrich

Journal of the Minnesota Academy of Science

No abstract provided.

Some Higher Fungi In The Vicinity Of Winona, Sister M. Sylvia

Journal of the Minnesota Academy of Science

No abstract provided.

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 Study Of The Relationship Between Blood Flow And Limb Volume In The Hind Limb Of The Dog., J. P. Holt

Electronic Theses and Dissertations

No abstract provided.

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.

A Study Of The Relation Of Temperature To Antibody Formation In Cold-Blooded Animals, Earl C. Mcdaniel

Biology ETDs

It is an established fact that when warm-blooded animals are inoculated with foreign protein, in a great many instances they become immune, due to the formation of antibodies specific for the protein injected. In warm-blooded animals the body temperature is constant. The question naturally arises as to what the situation would be with regard to antibody formation in a cold-blooded animal where body temperature is not constant; also what part, if any, the temperature of the body would have to do with the antibody formation.

In a careful review of the literature practically nothing could be found in having direct …