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Favorable Cultural Conditions For Tuber Development In Nephrolepis Cordifolia (L.) Presl. (Nephrolepis Tuberosa (Bory.)Willd.), Hazel Mae Henderson

Bachelors’ Theses

Recently there has been brought to the attention of writers a number of plants that produce water-storing organs commonly known as tubers. Luerssen, (Campbell, 1905) refers to special reproductive bodies or tubers in Marsilia hirsuta. These tubers are thought to survive long periods of drought, and to germinate under favorable conditions. Nephrolepis cordifolia (L.) Presl., one of the Boston ferns, which produces tubers in large numbers has interested a number of investigators.

The Anatomy Of The Timber Rattlesnake, Ruth H. Heinemann

Bachelors’ Theses

Snakes are the most highly specialized of all reptiles. The absence of limbs, in itself, is a great specialization. They possess a great modification of the jaws which enables them to engulf large prey entire. Probably the most out­ standing specialization is the remarkable modification of dentition in the venomous snakes. The so-called fangs are nothing more than teeth modified to a great degree.

Christ Crucified: A Book Of Sermons Together With A Lecture On Evolution, G. C. Brewer

Stone-Campbell Books

No abstract provided.

Biological And Psychological Study Of Twenty Pairs Of Twins Ranging From Seven To Eighteen Years Of Age, Albert C. Worden

University of the Pacific Theses and Dissertations

Although twins have always been of great Interest the only early data available are upon conjoined twins. The first record of such twins, which 18 known, 1s of the Bid-dendent Maids in the year 1100 A. D. From that date to the year 1824 when the Siamese Twins were born and later made famous by Barnum and Bailey's Circus, there have been many Interesting accounts of conjoined twins, but the nature of the present work and the probable unreliability of these accounts would make any discussion on the subject of these early conjoined twins not worth while.

The Development Of The Gametophyte And Apogamous Sporophyte In Cheilanthes Feei, Moore, Florence Madeline Steil

Bachelors’ Theses

Since Leszeye-Suminski's (1848) discovery of tracheids near the apical notch of the prothallium of Pteris sulcata, problems pertaining to apogamy or related phenomena have offered a wide field for botanists. Nearly all workers interested in the study of apogamous ferns, have contributed something of physiological or cytological interest

Some Methods Of Vegetative Reproduction In Nephrolepis Cordifolia, Presl, Mildred Frances Hubel

Bachelors’ Theses

Nephrolepis cordifolia, Presl is reproduced by means of spores, rhizomes, runners, and tubers. Little work has been done, however, on the tubers. In fact, the tubers are generally thought to be for storage only and consequently of little importance. At the Royal Palm Nurseries, Oneca, Florica where the plants for this study were obtained, the tubers were removed and thrown away. When a request was made for a large plant with the tubers, they replied: "We cannot supply the large cordifolia with the bulbs, as they were pruned off all our plants. They do not present a very attractive appearance …

Gramineae, Vicinity Of Richmond, Virginia, Mary Smith Lynn

Master's Theses

List of grasses documented in the vicinity of RIchmond, Virginia.

Scientific Discoveries Concerned With Pathogenic Micro-Organisms, Matilda Mary Steinbrecher

Bachelors’ Theses

Stand where you choose some calm night and look up into the great dome of the sky. Realize that those countless stars, once believed to regulate our destinies, have been proven by science to be other worlds more or less like ours. Let your thoughts wander on to objects near at hand. You see the rocks and soil and plants as did mankind for ages back; but where they not so long back saw nought else, you see rocks breaking into fertile soil and realize that minute living beings are responsible. You have come to understand that all the nitrogen …

The Theory Of Spontaneous Generation, Arthur Thomas Kuesel

Bachelors’ Theses

The theories concerning the origin of life on this planet have been many and varied all down the ages. In the prescientific ages, if we may be allowed to designate those years as such, before science was as exacting and searching sit is now, practically all the theories advanced by the philosophers at the time have since been proven to be fallacies and all of them save one, the Theory of Spontaneous Generation have been discarded into the limbo of mistaken notions.

The Development Of The Seedling And The Tissues Of Pinus Monophylla, Irene Mary Keeley

Bachelors’ Theses

Considering plants as a whole, there are four principal divisions, the Tallophytes, the Bryophytes, the Pteridophytes and the Spermatophytes. The latter, or highest division of the plant kingdom, comprises two classes; the Angiosperms and the Cymnosperms, or seed-bearing plants. The Gymnosperms, of which there are four hundred living species, are the most widely distributed of any plants throughout the United States and tropical countries. We need not limit our knowledge to recent years for, Geologists tell us of their early discoveries of fossil representatives. This class is subdivided into different groups, the Coniferales being the most important and abundant. The …

A Contribution To Our Knowledge Of The Aphididae Of Utah, George Knowlton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There are many groups of insects in Utah that have not been touched in a systematic way up to the present time, and to the knowledge of the author no systematic work has been done on the homopterous family Aphididae.

Due to the very common occurrence of the aphids, or plant lice, and the need for a simple key that would aid in the determination of these insects, this work was commenced in June 1923, continuous work being carried on in collecting, determining, drawing and describing, up to the present time.

Extreme Evolution Is Absurd And Moderate Evolution Is Not Yet Established, Marie Georgiana Blommer

Bachelors’ Theses

In the world of literature and science many records containing startling theories are to be found. Among these is the doctrine of Evolution. Many assure us that Science compels us to believe in Evolution. An explanation of the terms must be clearly understood to avoid a fallacious use of terms. Professor Huxley, who follows Hume, declares that Science is "nothing but trained and organized commonsense." The term is applied to physical science or "that whose province is the observation of phenomena and inferences directly deducible from them." The term "Evolution" is often differently understood. In its literal sense it is …

Critique Of Influence Of Mineral Manures Upon The Mineral And Nitrogen Composition Of Plants, Dan Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Variation in quality of plants of the same species has been known to exist for a long time. The influences bringing about such variation have been studied only comparatively recently. Quantity production has been given the greatest amount of attention as a rule, the beneficial results from the use of manures being judged by the quantity of produce. Some plants, however, varied so widely in composition, and the variations were of such paramount importance, that the influences affecting quality began to receive some attention. Of this type of plants may be mentioned sugar-beets and tobacco. There was also the hope …

Ua3/1/2/1 Letter Re: Evolution Taught At Wku, Wku President's Office

WKU Administration Documents

Letter from WKU president Henry Cherry to Charles McKinney regarding evolution being taught at WKU.

Ua3/1/2/1 Letters Re: Evolution Taught At Wku, Charles Mckinney

WKU Administration Documents

Letters from Charles McKinney to WKU president Henry Cherry regarding the teaching of evolution at WKU.

Ua3/1/2/1 Letter Re: Evolution Taught At Wku, Wku President's Office

WKU Administration Documents

Letter from WKU president Henry Cherry to Charles McKinney regarding the teaching of evolution at WKU.

A Study Of The Tissues Of Leaves Of Certain Angiosperms, Amybelle Halbert Brady

Bachelors’ Theses

The leaves used for the study of the tissues were those of the Oleander, Ficus, Ivy, Cyperus and the Aristolochia. Portions of the leaves used were cut into rectangular pieces, about one centimeter long and one half centimeter wide, each piece including a portion of a large vein and its subsidiary veinlets. The material was placed into chrome acetic acid solution. After twenty four hours it was a shed in running water for twelve hours and then dehydrated by means of alcohol, and was then imbedded in paraffin. The sections used for the study were cut from 12 to 15 …

Studies On The Early Differentiation Of The Neurons Of The Spinal Cord And The Spinal Ganglia Of The Chick Embryo By The Pyridine And Silver Method, Daniel Ludwig

Biology Honors Papers

This 18 page handwritten thesis examines the differentiation of the neurons in the gray matter of the spinal cord and in the spinal ganglion as observed in the chick embryo of four, five and six days incubation.

Localization Of The Motor Area In The Brain, Marian Josephine Xander

Biology Honors Papers

This 15 page thesis examines theories of brain function, localization of sense and motor area and experimental methods.

Ua94/6/1 Biology Notebook, Mildred Willian

Student/Alumni Personal Papers

Biology notebook kept by Mildred Willian ca. 1920. Includes notes regarding different species and drawings.

Further Studies In The Ecotone Between Prairie And Woodland, R. J. Pool, J. E. Weaver, F. C. Jean

University Studies (University of Nebraska) (1888–1984)

A series of intensive investigations of the ecological features of the tension zone between prairie and woodland in the Mississippi valley was begun by Weaver and Thiel in 1915. These studies were continued for two seasons in Minnesota and were also extended to the prairies of eastern Nebraska in 1916. These investigations represent the first attempt to attack the prairie-forest problem on a comprehensive scale by means of the quantitative methods of modern ecology. Some of the results secured from these studies have been published as the first paper of a series planned to deal with critical investigations in the …

[Book Review Of] Adaptation In Metapopulations: How Interaction Changes Evolution, By Michael J. Wade., David C. Queller

Biology Faculty Research

Adaptation in Metapopulations: How Interaction Changes Evolution. By Michael J. Wade. Chicago (Illinois): University of Chicago Press . $120.00 (hardcover); $40.00 (paper). vii + 260 p.; ill.; index. ISBN: 978-0-226-12956-3 (hc); 978-0-226-12973-0 (pb); 978-0-226-12987-7 (eb). 2016.

Faunistic Survey Of A Limited Area In New Mexico, Louise Wilkinson, Hazel Fern Reeves

Biology ETDs

The subject of this thesis was suggested by Prof. A. O. Weese. It was chosen by the writers first because they were interested in the distribution and habits of animal life in New Mexico and second because they wished to learn more about classification and methods of classification of animal life in general.

It has been found that New Mexico does not afford so great a variety of animal life as compared with more moist regions but that it affords much more than a casual observation would indicate. Most of those which it affords are found in large numbers.

The …

A Study Of Senescence, William T. Sanger

Historical Dissertations & Theses

A complete study of senescence would involve, not only a consideration of man, but of lower organisms, animal and plant, as well as institutions, races, nations, even the cosmos itself; for assuredly the phenomena of decay are as universal and intricate as those of genesis. In the present study, however, it will be attempted merely to indicate, first, the best that has already been done upon human senescence; second, to add further findings; and third, to set more definitely a number of new problems for future investigation.

A Notable Botanical Career, Charles E. Bessey

School of Biological Sciences: Faculty Publications

I have before me the " Report of the Botanist" to the Regents of the University of the State of New York, bearing date of January 1, 1868, covering less than two pages, and signed by Charles H. Peck. There is internal evidence that his services began July 1, 1867, the writer reporting what he had accomplished in the half year since that date. A year later the " Report of the Botanist " covered about 80 pages and included a short general statement followed by (A) List of Species of Which Specimens Have Been Mounted; (B) Plants Collected; (C) …

Synopsis Of The Conjugate Algae-Zygophyceae, Charles E. Bessey

School of Biological Sciences: Faculty Publications

A dozen or more years ago the writer prepared a series of papers on these plants, which were published in volumes 21, 22 and 23 of these Transactions, and now it seems that time enough has elapsed to warrant another paper dealing with the same group, and including such revisions as are now made necessary because of our better knowledge of their structure, and the structure of the nearly related plants.

Rocky Mountain Flowers, Frederic E. Clements, Edith Schwartz Clements

School of Biological Sciences: Faculty Publications

AN ILLUSTRATED GUIDE FOR PLANT-LOVERS AND PLANT-USERS WITH TWENTY-FIVE PLATES IN COLOR AND TWENTY-TWO PLATES IN BLACK AND WHITE

The present book is an endeavor to present the materials of the Rocky Mountain flora in preliminary form from the standpoint of the experimental ecologist. The latter is concerned primarily with the relationships of "species" and their subdivisions as an organic expression or measure of habitat differences, and of the competitive relations of the various formations. Whatever the taxonomic value of the numerous segregates of the last decade or two, the fact that the binomial form conceals the relationship to the …

Some Of The Next Steps In Botanical Science, Charles E. Bessey

School of Biological Sciences: Faculty Publications

When one who has worked long in any

field of science speaks before an audience

such as this he is expected to say something

about the condition of his branch of science

when he began work with meager and

poorly adapted apparatus, to contrast it

with its greatly improved condition to-day,

and to dwell with pride upon the finely

equipped laboratories with costly apparatus

especially designed for particular

experiments, to be found by the twentieth

century scientific student. And 1 must

confess that the temptation to do so was

one difficult to resist, for we who have

grown old in …

The Psychology Of Senescence: An Introductory Study, Charles W. St. John

Historical Dissertations & Theses

The following biographical studies have been made with the purpose of showing through concrete cases some aspects of mental decline in senescence. To the objection that each of these cases follows a course in a degree divergent from that of normal mental decline, the reply is that a study of these striking instanced, we believe, afford a more ready insight into the underlying phenomena than would a similar one which deals with average or typical cases. The significance of exceptional cases should not be underestimated. Certain peculiar conditions have been present which have modified the typical phenomena, but after due …

Botanical Teaching, Charles E. Bessey

School of Biological Sciences: Faculty Publications

Some months ago a suggestion was made that at this dinner we should ask ourselves the question: Why is it that with the enormous classes we are having in botany there is a marked dearth of properly trained men who can serve as instructors in colleges and universities?