Life Sciences Commons^™

A Comparison Of The Autonomic Nervous System Of The Cat And The Pigeon, William P. Mccarthy

Bachelors’ Theses

The purpose of this thesis is to describe the autonomic nervous system of the cat and pigeon and to compare them as to their structure. This comparison will consist in noting the differences and points of similarity between the two animals. The autonomic nervous system of the cat is more complex than that of the pigeon and for that reason the comparison will consist in pointing out the parts of the autonomic nervous system present in the cat, but which are not found in the pigeon. In noting the points of similarity only the most important will be treated.

A Proposed Agricultural Improvement Program For The Thirty Two Communities In The Patronage Area Of Haynes High School In Davidson County,Tennessee, Henry Louis Taylor

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

Developmental Anatomy Of Descurainia Pinnata, Robert D. Spensley

Biology ETDs

This study is concerned mainly with the morphological development of Descurainia pinnata subspecies ochroleuca (Wooton) Detling, a member of the tribe Sisymbrieae and subtribe Descurainiinae of the Cruciferae. Although commonly referred to as Sophia by many botanists, this genus is otherwise known as Descurainia and sometimes partly included in Sisymbrium. D. pinnata is listed as Sisymbrium canescens in Gray's manual, as Sophia pinnata by Coulter and Nelson, as Descurainia pinnata by Kearney and Peebles, and as Sophia ochroleuca by Wooton and Stanley.

The Anatomical Differences Of The Tubers Of The Genus Dicentra, June E. March

Bachelors’ Theses

Gray (1878) described a number of the subterranean modifications of the stems. These can be distinguished from the roots since they produce regular buds and scale leaves.

A Survey Study Of The Intestinal Worms And Ciliates Of The Hog (Suis Domesticas), John F. Crowley

Bachelors’ Theses

The purpose of this £survey study was to ascertain the variety and extent of intestional worm and ciliate parasites of hogs slaughtered in packing houses of the Milwaukee area.

The Effects Of Various Concentrations Of Vitamin B1 On The Growth Of Amoeba Proteus, Walter J. Bo

Bachelors’ Theses

Thiamin or vitamin B₁ was first isolated in crystalline form from rice bran by Jansen and Donath in 1926 . Windous, Tschesche, Buhkopf, Laquer and Schultz in 1931 isolated the pure vitamin B₁ from yeast and established the emperical formula - C₁₂H₁₇ON₄Scl.Hcl .

A Survey Of The Native Rabbits Of Utah With Reference To Their Classification, Distribution, Life Histories And Ecology, Reuel G. Janson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rabbits and hares, both popularly referred to as rabbits, occupy a very prominent position in the wildlife of Utah. Over much of the state, they form the most conspicuous faunal group, and between the lowest portion of the state to above timberline on the highest mountains there are very few areas entirely devoid or their presence. There is great variation, however, in their abundance, both between localities and times. In some areas, rabbit populations often attain amazingly high numbers to the delight of sportsmen and the dismay of farmers.

A Study Of The Renal Vascular Supply In The Domestic Cat, Elizabeth Rosen

Bachelors’ Theses

Studies on the normal and abnormal vascularization of the renal vessels in the domestic cat (felis domestica) indicate the frequency of anomalies that occur, but in most of the studies it is the inferior vena cava that is most often recorded. Among the occasional references to several renal veins or arteries we have Huntington and McClure, Elmer Butler, Gaylord Bates, William Darrach, and C.H. Fortune. Yet no study seems to have been made of individuals of any particular class. A superficial observation seems to indicate a large number of cats used in the laboratory had multiple renal veins. Hence a …

A Study Of The Tolerance Of Drosophila Melanogaster For Certain Chemicals Used In An Attempt To Produce Mutations, Marian L. Collins

Bachelors’ Theses

The problem of inducing mutations holds a fascination for the scientist because no one has as yet adequately explained the cause of mutations in nature. In attempts to solve this riddle, X-rays have been used most extensively to induce mutations, but because of the recent discoveries regarding the powerful effect of chemicals and fungi produced chemical compounds upon tropical disease-carrying insects, this field of experimentation is being reinvestigated in the hope of clarifying still undefined phases of the subject.

The purpose of this experiment was to determine the capacity of different types of chemicals to produce mutations, the mutation rate …

Thrips Species Infesting Tomatoes And Other Host Plants Of These Insects In Northern Utah, Darrell R. Maddock

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study has been to determine which species of thrips infest tomato plants and fruits in northern Utah, and to find out which other plants occurring in this area also serve as hosts for tomato-infesting thrips.

Because of the importance of tomato-infesting thrips to the canning industry, it was decided that more complete knowledge of the species of thrips which are found on tomatoes should be obtained. Because most thrips generally have been difficult to control, it was believed that a general knowledge of the plants on which these thrips occur would enable tomato growers to eliminate …

The External Male Genitalia Of Some Rhynchophora, Arthur F. Bruhn

Theses and Dissertations

Today there is an increasing recognition among taxonomists of the importance of consideration of the complete morphology of insects in classifying them and in arrangming them in their logical phylogenetic sequence. Regarding the Rhynohophora, with which this paper is concerned, some progress toward a more complete understanding has been made. In 1912 Sharp and Muir made a study of the male genital tube of the coleoptera in general and observed that the various specializations they noted in the forms of Rhynohophora examined would doubtless be of future significance. Tanner in 1927 made a similar important study of the female genitalia …

A Proposed Standard For Establishment Of Young Negro Men In Farming, Augustyne Vedester Hill Sr

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

A Survey Of The Rhopalocera Of Jefferson County, Kentucky., Delbert Kenneth Weniger

Electronic Theses and Dissertations

No abstract provided.

A Comparative Study Of Directed Laboratory And Lecture Demonstration As Methods Of Instruction In Teaching Botany To High School Students, M. Lucida Vorndran

Master's Theses or Doctor of Nursing Practice

A controlled investigation of green plants as the most important food factories of the world has been made in order to contribute more information upon the issue. Stated more specifically, the problems of this experimental study were the following: 1. To determine which of the two methods, if either, is superior as a procedure for learning. 2. To determine whether laboratory experiments are more effective than lecture-demonstration in training students to think clearly, to correlate and retain facts; and finally, to draw logical conclusions. 3. To determine, if possible, which method stimulated the greater amount of pupil interest.

Bio-Ecology On A Mixed Prairie Near Hays, Kansas, H. Leo Brown

Master's Theses or Doctor of Nursing Practice

A survey of the activity of wild animals in connection with range conditions and range management is greatly needed in western Kansas. To have a well-managed range one should have an understanding of the ecological factors which benefit or deplete the native vegetation that is essential for production of livestock. The impact of grazing, and the effect of changes in edaphic and atmospheric environment on the prairie have further emphasized the importance of a cover of grass in preventing erosion.

An Anatomical Study Of Cicer Arietinum, Mary Elizabeth Johns

Biology ETDs

This investigation was made for the purpose of studying the developmental anatomy of the primary axis of Cicer arietinum. Ontogenetic studies of the primary and secondary tissues of the root and stem, and the leaf primordia are included

The Stomatal Behvior Of Begonias And Its Relationship To Infection By Xanthomonas Begoniae, Eugene David Kitzke

Bachelors’ Theses

A leaf spot disease of begonias caused by a bacterium has been under observation and study at Marquette University for nearly a year. It brings up many interesting questions which need to be an­swered before the investigators can fully evaluate and determine correctly the relationships of this organism to the Begoniaceae. One of the questions, which has come up, was the problem of the mode of entrance. It is the purpose of this paper to deter­ mine the relation of the stomata to infection.

Histological Study Of The Small Intestine Of The Common Green Snake, Thamnophis Sirtalis, Robert George Stineman

Bachelors’ Theses

Although much work has been done histologically with the vertebrates, very little seems to have been done on the intestinal tract of the reptile. This is especially true of the snakes, despite the abundant sources of material. Reptiles are one of the first classes of vertebrates in which there is a distinction made between small and large intestine. Histology textbooks devote only a few lines to the histology of the reptilian small intestine. For this reason it seems that it would be worthwhile to make a detailed study of that portion of the intestinal tract immediately distal to the duodenum …

The Histology Of The Digestive Tract Of The Common Green Snake, Thamnophis Sirtalis 3. Esophagus, Janice Jean Mcfarlane

Bachelors’ Theses

This is the third in a series of investigations of the comparative histology of the digestive tract of Thamnophis sirtalis, the common green snake. Comparatively little recent work of this nature upon any of the class Reptilia, and especially upon the order Ophidia, seems to have been undertaken. Kendall(1940) makes no mention of Ophidia, but discusses briefly the digestive system of the lizard, limiting his treatment of the esophagus to a few lines. Cole (1941) has an equally short and general discussion of the digestive system of Thamnophis sirtalis, again devoting but a brief space to his discussion of the …

Atypical Conditions Of The Inferior Vena Cava, Mary F. Reagan

Bachelors’ Theses

Extensive dissection of various mammalian forms, expecially of man, the rabbit, and the cat has led to a recognition of a certain vascular pattern of the inferior vena cava which is typical for the group, It occurs so consistently that the occasional specimens which differ from it are of interest because of both their ontogenetic and phylogenetic significance.

The Feulgen Reaction Applied To Various Platyhelminthes And Small Ascarid Worms Mounted In Toto In Balsam Oil, Louise R. Russort

Bachelors’ Theses

The problem involved in this experiment was the application of the Feulgen Reaction to a number of flatworms and small ascarid worms, in an attempt to ascertain whether or not a practical staining technique, (showing clear differentiation of nuclear material, etc., from the surrounding cuticle and cytoplasm) -- may be developed, by staining and mounting them in toto. The Feulgen Reaction was used in this experiment, not as a specific indicator for thymonucleic acid, but rather as a cytological stain. Some attention will be focused upon the reaction's specificity, however, in the following discussion of the development of the reaction …

Some Technique Methods For Preparing Slides Of The Paramecium, Irene Padley

Bachelors’ Theses

Du Jardin (1835) was probably the first to recognize in protozoa, living substance. To this substance, he applied the word sarcode. In 1861, Max Schultze expressed the idea that sarcode and protoplasm are the same thing.

The North American Species Of Smilacina, Desma H. Galway

Theses and Dissertations

This paper is the result of a taxonomic study of the species of the genus Smilacina occurring naturally in North America north of Mexico. In the past it has been difficult to make satisfactory determinations of members of this genus from existing manuals, especially among western forms. West of the great plains the great diversity in environmental conditions has given rise to a diversity in form of the species that are widely distributed. Many of these forms have been given specific or varietal names recently, and as no comprehensive work on the genus has been done since most of these …

The Effect Of Adrenaline Injection On Glycogenolysis And Glycogenesis In Rat Livers, Virginia Mary Zingsheim

Bachelors’ Theses

Present day knowledge concerning the liver is derived from many sources and the accumulation of many methods of investigation. Sugar, which is needed by the body for energy, is stored in the liver as glycogen. Claude Bernard (26), an eminent physiologist, was the first to suspect that carbohydrates were stored in the liver. Faulty glycogen synthesis and hydrolysis results in one of our most widespread diseases, diabetes. Thus, many biochemists and physiologists have tried to find the mechanism of the process, and the primary and secondary facts which affect glycogenesis and glycogenolysis. Although the chemical secretions and hormones of such …

Making Permanent Mounts Of Fern Gametophytes, Gail Seeraphine Barczak

Bachelors’ Theses

One of the botanists first to grow fern gametophytes from spores whicch were sown on moist clay was Farlow (1874), a student of the famous botanist, DeBary, professor of Botany at the University of Strassburg in Germany. Farlow sowed the spores of Ptteris cretica var. albo-lineata on moist clay placed into small flower pots. Watering was accomplished from the top. There was no sterilization of the culture medium. The gametophytes of this fern were also grown under the same conditions by DeBary (1878). Steil (1919a) grew the prothalli of Ptteris sulcata and Ptteris cretica var. albo-lineata in the same manner …

Physiological Effects Of Sulphur On The Chick And Its Value In Coccidiosis Prevention., Ollie Edward Goff

LSU Historical Dissertations and Theses

No abstract provided.

A Study Of Sugar Cane Rootstock Weevil (Anacentrinus Subnudus, Buch.)., Bancherd Balankura

LSU Historical Dissertations and Theses

No abstract provided.

Studies Of Mississippi Algae With Special Reference To Water Supplies., Richard Lee Caylor

LSU Historical Dissertations and Theses

No abstract provided.

A Study Of Factors Influencing The Hydrolysis Of Corn Amylopectin By Barley Malt Enzymes., Thelma Munsey Back 1918-2006

Electronic Theses and Dissertations

No abstract provided.

Abstracts Of Source Materials On The Conservation Of Our Natural Resources., Eunice Wheeler Duncan

Electronic Theses and Dissertations

No abstract provided.