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Common Fossil Pollen Of The Erie Basin, Paul B. Sears

Papers in Ecology

This paper is intended chiefly to assist in the identification of common and significant pollen found embalmed in bog deposits in north-central United States. Before proceeding with the actual key and description, a brief explanation seems to be in order.

For a number of years European botanists have been counting the various species of pollen found at different levels in bogs. Such statistics have been used to trace the course of plant succession and the climatic changes of which it is held to be the expression. Stark (9) has prepared a concise summary on the subject up to about 1924; …

Creation Or Evolution, W. W. Otey

Stone-Campbell Books

No abstract provided.

The Effect Of Soil Moisture On The Establishment Of Spruce Reproduction In British Columbia, Percy Munson Barr

Yale School of the Environment Bulletin Series

Most of the field work has been conducted at the Aleza Lake Forest Experiment Station, in the valley of the Upper Fraser River, near the city of Prince George [British Columbia].

I. A series of twelve permanent plots (numbers 1 to 12) was established for the purpose of studying the occurrence of natural reproduction on various types of seed bed, under different densities of overwood and on northern and southern aspects. 2. A second series of four plots (numbers 17 to 20) was laid out in logged-off land for the purpose of studying the survival and growth of advance reproduction …

Amebelodon Sinclairi Sp Nov., Erwin H. Barbour

Bulletin of the University of Nebraska State Museum (1924–2023)

Amebelodonts are so new and so rare that even fragmentary facts relative to the group seem worth publishing. The specimen under consideration is a mandibular tusk found on the farm of Mr. A. S. Keith, Freedom, Frontier County, Nebraska, on the Morrill Geological Expedition of 1928, and is numbered 1-17-7-28, S. and L., the collectors being Bertrand Schultz and John LeMar, both of the class of 1931, the University of Nebraska. The formation was Late Pliocene or Pleistocene.

Propagation Of Aquatic Game Birds, W. L. Mcatee

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The propagation of aquatic game birds in the United States is a small but growing industry. Approximately 50,000 wild ducks and 5,000 wild geese constitute the present annual production. Some of these birds are bred by individual or organized sportsmen for their own use, some by fanciers because of their interest in the birds, and others by breeders for sale. The market for two species, the mallard duck and the Canada goose, demands birds for use in restocking, for decoys, and for food. Sale for food is the exception rather than the rule, and is to the better class of …

The Spleen Considered With Special Reference To Its Physiology, Frank A. Dolce

Bachelors’ Theses

The aim of this essay on the structure and function of the spleen is to bring together in somewhat concise form all the available knowledge concerning this organ up to the present moment. However, time and the difficulty of obtaining valuable articles has limited this essay considerably. The first few pages while not giving a very detailed historical background may be considered quite adequate for the purpose intended. The evolutionary development of the spleen is here considered in broad outline. The microscopic anatomy of the spleen and its function in relation to the blood have been considered in greater detail …

Control Of The White Pine Weevil On The Eli Whitney Forest, William Maughan

Yale School of the Environment Bulletin Series

During the summer of 1930 the author made an investigation to determine the actual results of the control work. The results show that the weevil can be controlled on certain sites. The removal of infested tips brings about a marked reduction in the amount of infestation evident during succeeding years. The reduction first becomes noticeable the second or third year after the work is started. In the stands in which treatment has been completed more than enough acceptable stems have been secured on the medium and better sites. On the poorer sites enough acceptable stems are not secured even though …

Homes For Birds, E. R. Kalmbach, W. L. Mcatee

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Birds appeal strongly to the interest and affection of mankind. Not only do they charm by their graceful forms, harmonious colors, sprightly actions, and usually pleasing notes, but they have an even more important claim upon our esteem because of their great economic value.

Birds feed upon practically all insect pests. They are voracious, able to move freely from place to place, and exert a steady influence in keeping down the swelling tide of insect life.

For economic as well as for esthetic reasons, therefore, an effort should be made to attract and protect birds and to increase their numbers. …

A Comparison Of American And Japanese Of Physical And Physiological Traits, Yone Okamura

University of the Pacific Theses and Dissertations

The purpose or this study is to present a comparison of physical and physiological traits of American and Japanese racial types which appear to me to read to certain facts and factors of both races.

The Mandible Of Amebelodon Fricki, Erwin H. Barbour

Bulletin of the University of Nebraska State Museum (1924–2023)

The type specimen of the genus Amebelodon is installed in the Nebraska State Museum, the University of Nebraska, Lincoln. It consists of a mandible with tusks and teeth, all of which are dense and perfect, barring minor cracks and breaks. One toe bone and part of a rib found associated with this mandible may belong to this animal. It was discovered by Mr. A. S. Keith on his farm near Freedom, Frontier County, Nebraska; was secured for the palaeontological collections of Hon. Charles H. Morrill by Mr. Phillip Orr, April 4, 1927; was briefly described and figured in a Museum …

The Abortion Problem In Farm Live Stock, L. Van Es

Nebraska Agricultural Experiment Station: Historical Circulars

Successful animal husbandry is fundamentally dependent on the efficient reproduction and preservation of young stock. Not only are losses among the latter a prolific source of direct economic damage, but they also tend to create an equally serious disadvantage of a more indirect nature. Losses of young animals, unless a reduction of our live stock population can be tolerated, necessitate the setting aside of a larger number of females for purely reproductive purposes than would be required if such losses were not a factor.

Relation Between The Development Of Root System And Shoot Under Long- And Short-Day Illumination, J. E. Weaver, W. J. Himmel

Department of Agronomy and Horticulture: Faculty Publications

Relatively few investigations have been made to determine the factors which affect the relation of the growth of roots to tops. A more exact knowledge of the relations between aerial and subterranean plant parts and the degree to which these may be modified through cultural practices is of great scientific and practical importance. Extensive investigations have shown that plants exhibit marked specific and varietal differences with respect to relative development of roots when grown under the same environmental conditions. Intensive studies on the growth of wheat by Weaver, Kramer, and Reed (20) and of certain other plants by Crist and …

Scholasticism An Intellectual Basis And Unifying Principle Of Modern Science, Alice V. Johnson

Electronic Theses and Dissertations

Amid the almost uninterrupted disintegration of systems during the last three centuries, the philosophy of St. Thomas has alone been able to stand the shock of criticism; it alone has proved sufficiently solid and comprehensive to serve as an intellectual basis and unifying principle for all the new facts and phenomena brought to light by modern science.

Some Desmids Common To The Vicinity Of Milwaukee, Mary Charitas Kuehna

Bachelors’ Theses

The subject matter of this paper is "the minutest of pet nurslings of Nature the Desmids. So insignificant, that it is safe to say more than nine-tenths of the human race hardly know of their existence, the Desmids, nevertheless, offer a wide and extensive field for the moat fascinating study and research. The purpose of this paper is first, to give a brief history of the Desmids, and then to determine which families, genera, and species of the Desmids are most common in this vicinity, and to study the conditions which are most favorable for their growth.

The Structure Of The Seed And The Development Of The Seedling Of Symplocarpus Foetidus (L.) Nutt,, John P. Ranzau

Bachelors’ Theses

The first mention of Symplocarpus foetidus (L.) Nutt. is made by John Josselyn in his ''New England rarities discovered in birds, beasts. fishes, serpents and plants of that country" published in 1872, where it is listed with plants such as are "proper to the country and have no name." The subject of his description can readily be discovered from a crudely engraved illustration. "The whole plant scents as strong as a fox" certainly leaves no doubt as to the identity of the plant. The plant has for a long time been of unusual interest to both layman and botanist because …

The Development Of The Gametophyte And The Apogamous Sporophyte Of Pellaea Viridis Macrophylla, Margaret Carolyn Scherkenbach

Bachelors’ Theses

A sporophyte tissue element in the gametophyte cells of a fern was first reported by Leszeye-Suminski (1848), who observed tracheids near the apical notch of the prothallium of Pteris sulcata L.

A Taxonomic Study Of A Hardwood And Adjacent Swamp Formation, Lewis W. Kehr

Bachelors’ Theses

The surveyed area lies in the north eastern corner of section 15, of the Township of Watertown in Jefferson County of the State of Wisconsin and extends over into sections 10, 11 and 14 of the same township.

The Endocrine Glands, Mary Gordon Rule

Biology Honors Papers

This 23 page thesis examines the influence of endocrine glands, including the thyroid, thymus, pituitary and pineal on the physical and psychical behavior of organisms.

Bulletin No. 210 - The Mineral Content Of Grains, J. E. Greaves, C. T. Hirst

UAES Bulletins

It is generally recognized that shrunken, frosted, or smutty grain is inferior to sound, clean, plump grain. Much has been done on the protein content of grain, and the best millers today purchase grain for its protein content. Few give any consideration to its minerals. Yet do two bushels of sound, plump, clean grain of known protein content grown under the same or different conditions, have the same mineral content? If not, it is of importance to both the producer and consumer: to the consumer because it governs the nutritive value of the product; to the producer because it represents …

Bionomics Of The Clover Leaf Weevil, Hypera Punctata (Fabr.), In Utah, Lorin C. Fife

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Clover Leaf Weevil, Hypera punctata (Fabr.),* is a foreign pest introduced from Europe into New York, which first became noticeable in 1881. The insect has rapidly spread westward reaching Utah at least by 1912. Since this time several out-breaks have occured. In 1927 the injury to alfalfa, Medicago sativa, was severe in limited areas in Hooper, Weber County, and in 1927 and 1928 the infestation was very pronounced in certain parts of Salt Lake City.

Forty-Third Annual Meeting Of The Iowa Academy Of Science, April 26 And 27, 1929, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Bulletin No. 209 - Biennial Report Of Director: July 1, 1926-June 30, 1928

UAES Bulletins

No abstract provided.

Torynobelodon Loomisi, Gen Et. Sp. Nov., Erwin H. Barbour

Bulletin of the University of Nebraska State Museum (1924–2023)

The group of proboscideans which we have called the shovel-tuskers or Amebelodonts, was announced in June, 1927,¹ following the discovery of Amebelodon fricki. In the field season of 1928, two additional species were found which are represented by mandibular tusks. One of these is a tip of a large and unique tusk, numbered 2-3-9-28, S. and L., the collectors being Bertrand Schultz and John LeMar, both of the class of 1931, the University of Nebraska. It was found within 200 to 300 yards of the spot on his farm where Mr. A. S. Keith, Freedom, Frontier County, Nebraska, found …

The Mandibular Tusks Of Amebelodon Fricki, Erwin H. Barbour

Bulletin of the University of Nebraska State Museum (1924–2023)

The ponderous mandible of the great shovel-tusked mastodon, Amebelodon fricki, was figured and described before it was practicable to remove the plaster cinches. In the meantime, this rare specimen has lain on its sand table awaiting the time when sections and casts could be made before mounting it permanently. A rare specimen, especially if heavy, unwieldy, and fragile, is rarely dismantled for study after it is mounted and installed in its case. A gelatine cast of the alveoli has been made, and through the assistance of Mr. Murray Jerome Roper, a cast of the left mandibular tusk has just been …

Roster And Records Of Secretary: 1903-1929, Iowa Academy Of Science

Iowa Academy of Science Documents

Meeting minutes, conference programs, and more from the Iowa Academy of Science during the years 1903-1929.

Some Aspects Of Soil Moisture In The Forest, Ian J. Craib

Yale School of the Environment Bulletin Series

By determining the moisture content of carefully selected soil samples taken at various depths down to three feet, the moisture content of soils in the forest and in the open have been compared. The soils investigated were similar in their mechanical properties. Part I is an investigation of the effect of forest cover on the amount of water in the soil over the growing season and its availability. Part II is an investigation of the effect of root competition on the available water supply of forest soils.

The Frequency Of Somatic Mutation In Variegated Pericarp Of Maize, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

Some years ago (Emerson 1922) the writer announced that in F₂ of

certain crosses of variegated with colorless pericarp in maize the heterozygous

individuals changed to self color more frequently than did the homozygous

individuals of the same cultures. No “explanation” of this phenomenon

was then apparent, but later results, though still far from affording

an adequate solution of the problem, have furnished at least a working

hypothesis. The original unpublished paper, with minor modifications,

is given below, under the heading. “Somatic mutations in heterozygous

and in homozygous variegated pericarp.”

Some Aspects Of Light In The Forest, Amihud Grasovsky

Yale School of the Environment Bulletin Series

In this present investigation an attempt is made to determine experimentally to what extent light controls the vegetation on the forest floor and, consequently, succession of the forest flora, and whether under natural canopies light can be looked upon as a limiting factor in plant survival.

The general conclusion reached is that the intensity and quality of the light reaching the forest floor are not the determining factors in accounting for the presence or absence of reproduction in the fully stocked forest where the investigation was made.

Descriptions Of Five New Species Of Vespoid Wasps (Hymenoptera), Raymond Roberts

Department of Entomology: Faculty Publications

While working on a taxonomic study of the superfamily Vespoidea, the writer has discovered a number of species that are new to science. Following are descriptions of, and comments on five new forms, the type specimens of all of which are in the collection of the. University of Nebraska. Acknowledgment is made of the assistance of Professor lIyron H. Swenk in the progress of this work and for criticisms in the preparation of this paper.

Translation By Joseph Szanto Of Kotlan, Sandor, Mocsy, Janos, And Vajda, Todor. 1929. A Juhok Coccidiosisa'nak Okozo'i Egy U'J Faj Kapcsa'n = [Coccidiosis Of Sheep In Connection With A New Species.] Allatorvosi Lapok 52(23): 304-306, Sandor Kotlan, Janos Mocsy, Todor Vajda, Joseph Szanto

Harold W. Manter Laboratory of Parasitology: Library Materials

Translation number 4, College of Veterinary Medicine, University of Illinois, Urbana, Illinois, United States

Translation by Joseph Szanto of Kotlan, Sandor, Mocsy, Janos, and Vajda, Todor. 1929. A juhok coccidiosisa'nak okozo'i egy u'j faj kapcsa'n = [Coccidiosis of sheep in connection with a new species.] Allatorvosi Lapok 52(23): 304-306

Translation from Hungarian to English by Joseph Szanto of University of Illinois, Urbana, Illinois, United States, July 7, 1960 (4 pages)