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Utilization Of Proteins By The Growing Chick, F. E. Mussehl, C. W. Ackerson May 1931

Utilization Of Proteins By The Growing Chick, F. E. Mussehl, C. W. Ackerson

Nebraska Agricultural Experiment Station: Historical Research Bulletins

1. There is a marked difference in the nutritive value of the various protein-contributing concentrates when used to supplement a corn-wheat basal ration which has been made complete for known vitamin and mineral essentials. 2. There is a great difference in the biological value even of animal protein concentrates. 3. Soybean meal produced a better growth rate than any of the other plant concentrates used. Cottonseed meal proved to have a greater growth-promoting value than did linseed oil meal. 4. The supplementing values of protein concentrates, one to another, is not quite as evident as one would expect if the …

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Forty-Fifth Annual Meeting Of The Iowa Academy Of Science, May 1 And 2, 1931, Iowa Academy Of Science May 1931

Forty-Fifth Annual Meeting Of The Iowa Academy Of Science, May 1 And 2, 1931, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

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The American Mastodon With Mandibular Tusks, Erwin H. Barbour Mar 1931

The American Mastodon With Mandibular Tusks, Erwin H. Barbour

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

Mastodons and mammoths, represented by their relics, are so frequently exposed by shovel, plow, road grader, dredge, and rains, that they have become household words. They are plainly the commonest and best-known vertebrate fossils. They were fortuitously entombed, and are now accidently found. Their relics, though numerous, never represent the grand total that lived. Indeed, it was a rare individual that fell where circumstances favored rapid interment and consequent preservation; the grand majority fell in the open where their bones suffered rapid and complete decay. The American mastodon occupies a position between the long-jawed, long-skulled, four-tusked ancestor called Palaeomastodon, and …

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The Vitamin A Content Of The Milk Of Holstein, Ayrshire, Jersey, And Guernsey Cows, H. P. Davis, I. L. Hathaway Feb 1931

The Vitamin A Content Of The Milk Of Holstein, Ayrshire, Jersey, And Guernsey Cows, H. P. Davis, I. L. Hathaway

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A comparative study of the vitamin A content of milk produced by Holstein, Ayrshire, Jersey, and Guernsey cows was made by comparing the growth produced by 560 rats receiving milk from these breeds as their only source of vitamin A. The results showed some slight irregular differences in the gains produced by the milk from the different breeds. When these differences were considered in view of the individual variation of the experimental animals, they appeared negligible. This conclusion was substantiated by a statistical examination of the data. From the results of this study in which the experiments were duplicated, it …

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Infection Experiments With Spindle Tuber And Unmottled Curly Dwarf Of The Potato, R. W. Goss Feb 1931

Infection Experiments With Spindle Tuber And Unmottled Curly Dwarf Of The Potato, R. W. Goss

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is probable that more than one insect species are capable of spreading some of the potato virus diseases. This conclusion was also indicated by repeated observations in the dry-land section of western Nebraska. While aphids are abundant and are probably the chief vectors of potato virus diseases in the more humid sections of the country, they are usually scarce in the western upland plains area and are not present in large enough numbers to account for the rapid spread of spindle tuber and unmottled curly dwarf which sometimes occurs. It was therefore considered advisable to determine the common potato …

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Trenched Plots Under Forest Canopies, James W. Toumey, Raymond Kienholz Jan 1931

Trenched Plots Under Forest Canopies, James W. Toumey, Raymond Kienholz

Yale School of the Environment Bulletin Series

The relative importance of light and soil moisture in particular is better known than that of other environmental factors. We are coming to believe that the nature and condition of the reproduction and other surface vegetation beneath living canopies are not due to any single factor such as light or soil moisture, but to a complex of factors.

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The Milford Mastodon, Mastodon Moodie I, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour Jan 1931

The Milford Mastodon, Mastodon Moodie I, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour

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

In developing the hydro-electric plant of the Iowa and Nebraska Light and Power Company, a number of dams were thrown across the Blue River and its branches. One of these, known as Dam No.7, was built across the West Blue, about nine miles southwest of Milford, Seward county, Nebraska. This dam raised the water well above the ordinary river level, and flooded fifteen or twenty acres of valley land. The impounded water soaked into, and washed against, the base of a twenty-foot bank of cross-bedded sand, until some time during the winter of 1931, a portion of the bank near …

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The Musk-Oxen Of Nebraska, Erwin Hinckley Barbour Jan 1931

The Musk-Oxen Of Nebraska, Erwin Hinckley Barbour

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

The remains of no less than eight fossil musk-oxen are already known in Nebraska, of which one is preserved in the Museum at Hastings, Nebraska, and seven in the State Museum at Lincoln. This is a large number to be recorded in anyone state. As late as 1891 authors wrote that but two examples of musk-oxen were known in the United States, one from Kentucky, and one from Arkansas, if, indeed, they be valid species. Now that pioneer days are well behind this commonwealth, and that there is a growing sentiment for exploration and proper display of the State's resources, …

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A New Crinoid Slab, A Bit Of Mississipian Sea Bottom, Erwin Hinckley Barbour Jan 1931

A New Crinoid Slab, A Bit Of Mississipian Sea Bottom, Erwin Hinckley Barbour

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

Crinoids are popularly known as stone-lilies, featherstars, and sea-lilies. The word lily is a misnomer, and many, misled by the name and by the lily-like form, associate crinoids with the plant kingdom. The name, feather-star, seems explicit for it refers to the feathery arms surrounding the cup or calyx, and expresses relationship to the starfishes and their kind. The cup is attached to a stem, and the stem is anchored to the ocean floor by so-called roots, which are really hold-fasts, or anchors. These features may be seen in the diagram at the end.

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A New Amebelodont, Torynobelodon Barnumbrowni, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour Jan 1931

A New Amebelodont, Torynobelodon Barnumbrowni, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour

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

The subfamily of longirostrine mastodonts known as the Amebelodontinae have been so recently discovered and described that as yet they; are little known by the citizens of this state. They are most briefly and directly described as shovel-tusked mastodons. The first one found, namely Amebelodon fricki, was secured in April 1927, and was published June 1927. In the meantime, many other examples of Amebelodonts have been added to the Morrill Palaeontological Collections of the Nebraska State Museum. The exact number cannot be stated until the material shipped in from the field during the current season is unpacked, cleaned, and identified. …

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Evidence Of Dinosaurs In Nebraska, Erwin Hinckley Barbour Jan 1931

Evidence Of Dinosaurs In Nebraska, Erwin Hinckley Barbour

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

Nebraska has long been a collecting ground famous for its fossil mammals, but as yet no dinosaurian bones have been reported, nor have they been expected. The distal end of a finely preserved femur, however, has recently been brought to light, supposedly occurring in position in the Dakota formation of eastern Nebraska. It was discovered, collected, and donated by Mr. J. B. White, (University of Nebraska, Law, class of 1899) on his farm two miles south of Decatur, in northeastern Burt County, near the Missouri River. It was found in undoubted Dakota sand associated with many leaf impressions. This is …

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The Giant Beaver, Castoroides, And The Common Beaver, Castor, In Nebraska, Erwin Hinckley Barbour Jan 1931

The Giant Beaver, Castoroides, And The Common Beaver, Castor, In Nebraska, Erwin Hinckley Barbour

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

Respecting the giant beaver, Castoroides, in Nebraska, four occurrences can be reported. Of rodents in general the dawn. was in the early Eocene, at which time there were in existence certain squirrel-like members of the order. Rodents are a persistent group, and are among the smallest, most distinctive, most numerous and widely distributed orders of terrestrial mammals. No other order boasts of so many species, the number being between nine hundred and one thousand. In spite of wide divergencies and modifications adapting them to various modes of life, such as climbing, burrowing, swimming, flying, leaping, and running, there is remarkable …

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A Morning's Consignment Of Proboscidean Freight, Erwin Hinckley Barbour Jan 1931

A Morning's Consignment Of Proboscidean Freight, Erwin Hinckley Barbour

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

In the accompanying cut the array of great tusks outlined through their rough crates may lack attractiveness, nevertheless the assemblage is quite out of the ordinary, and seems worth recording in bulletin form. In all museums, and like institutions, freight and express deliveries are matters of daily routine; however, the morning's freight shown in the cut is unique. Herein is represented the more showy portion of the proboscidean freight received at the Nebraska State Museum in a single consignment, in the field season of 1930. The other boxes of mammoth skulls, jaws, and bones, received at the same time, are …

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Greenhouse Studies On The Relationship Of Age Of Wheat Plants To Infection By Puccinia Graminis Tritici, George W. Eade Jan 1931

Greenhouse Studies On The Relationship Of Age Of Wheat Plants To Infection By Puccinia Graminis Tritici, George W. Eade

Electronic Theses and Dissertations

The resistance of wheat to the stem-rust organism (Puccinia graminis tritei) has been under investigation for a number of years. Although rust resistance has been investigated from various angles, there still remains a question as to the nature of resistance, the time when resistance first appears in plants and whether or not it is of a stable character. Peltier found that environmental conditions could change the degree and type of stem rust infection on wheat plants; Miss Hart proved that stomatal behavior was very important in the rust resistance, and Harrington and Aamodt studied the inheritance of rust resistance and …

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The Spleen Considered With Special Reference To Its Functions, Louis J. Schmidt Jan 1931

The Spleen Considered With Special Reference To Its Functions, Louis J. Schmidt

Bachelors’ Theses

In arranging this thesis an attempt has been made to show that by virtue of its embryology, anatomy and histology, the spleen is the better enabled to carry out its alleged functions. The discussion here presented is confined to a story of the functions of the mammalian spleen alone. The similarities in the reactions of the spleen in the various mammalia is quite evident. Experimentation and observations were carried out on the lower mammalia while only the reactions of the splenectomized humans could be observed.

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The Spleen With Special Reference To Its Origin And Comparative Morphology, Morris Aaron Gilbert Jan 1931

The Spleen With Special Reference To Its Origin And Comparative Morphology, Morris Aaron Gilbert

Bachelors’ Theses

Throughout the ages the spleen has been an object of the most active curiosity. The opinion that the spleen is unnecessary and of no use to the individual has prevailed with an uninterrupted succession in the World in all ages. In Persia, man centuries ago, in the reign of Abouserous it was a custom to splenectomize the horses that were kept to carry the King's dispatches, in order to give them more agility and swifter feet. The great Aristotle thought the spleen to be a sort of spurious liver planted in the left side to correspond to the liver in …

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The Spleen Considered With Special Reference To Its Physiology As Determined Mainly From Splenectomy, Frank X. Schuler Jan 1931

The Spleen Considered With Special Reference To Its Physiology As Determined Mainly From Splenectomy, Frank X. Schuler

Bachelors’ Theses

The spleen is essentially a vertebrate organ and its steady persistence throughout the group is an indication of its importance. Comparative study shows that it has certain common structural features , which may be counted fundamental or essential. In some animals, for example, in mammals, there are found additional structures, notably lymphoid tissue and splenic muscle often regarded as secondary acquisitions.

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Root Growth Of White Pine (Pinus Strobus L.), Clark Leavitt Stevens Jan 1931

Root Growth Of White Pine (Pinus Strobus L.), Clark Leavitt Stevens

Yale School of the Environment Bulletin Series

Periodic measurements were made throughout two growing seasons to determine the rate of growth in length of lateral roots of white pine, four to six years old, planted in open fields.....Wide variation between individual roots was observed in the amount of growth made annually.

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The Distribution And Economic Value Of The Chenopodiaceae Of San Joaquin County, California, Ralph Stiles Raven Jan 1931

The Distribution And Economic Value Of The Chenopodiaceae Of San Joaquin County, California, Ralph Stiles Raven

University of the Pacific Theses and Dissertations

Plants of this family which contains about seventy four genera and five hundred end fifty species widely distributed over the world, are known by several common names, such as pig weed, goose foot, and salt bush. They are primarily plents of alkaline or saline soil and co such a unique purpose in the plant real thriving where it is impossible for other plants to grow. The term "salt bush" according to G.L. Bi-well, is more specifically applied to a group of individuals having a pronounced salty tante, a majority of which belong to the botanical genus Atriplex. This group contains …

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The Natural Factors In The Selection Of Diet., Lamar William Neblett Jan 1931

The Natural Factors In The Selection Of Diet., Lamar William Neblett

Electronic Theses and Dissertations

No abstract provided.

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The Effect Of Potassium-Iodide On The Embryological Development Of The Chick With Special Reference To The Growth Of The Long Bones., David M. Polot 1904-1978 Jan 1931

The Effect Of Potassium-Iodide On The Embryological Development Of The Chick With Special Reference To The Growth Of The Long Bones., David M. Polot 1904-1978

Electronic Theses and Dissertations

No abstract provided.

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Circular No. 88 - Annual Summary Of Publications Jul 1930

Circular No. 88 - Annual Summary Of Publications

UAES Circulars

Circular No. 88 contains a summary of publications issued by the Utah Agricultural Experiment Station, through its Editorial and Publications Division for the fiscal year ending June 30, 1930. The publications of this Station are no longer sent to a general mailing list (except in the case of libraries, state editors, Utah county agricultural agents, state vocational teachers, and state agricultural inspectors) but are sent only on request. Therefore, copies of any of these publications listed will be sent without charge to those requesting them as long as the supply is available. However, in the case of reprints …

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A Record Of Post-Glacial Climate In Northern Ohio, Paul B. Sears Jul 1930

A Record Of Post-Glacial Climate In Northern Ohio, Paul B. Sears

Papers in Ecology

This paper reports the probable course of post-glacial forest succession in northern Ohio, as indicated by a study of fossil pollen deposited in the Bucyrus Bog. The object of the study has been to trace in greater detail than has yet been possible the course of climatic change since the end of the Wisconsin glaciation.

The principle employed is one which has been used in numerous European studies since 1915. It consists of a tabulation of the percentages of pollen grains of each species found in successive levels of bog deposits, and deduction of the prevailing forest composition at each …

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The Development Of The Gametophyte And The Apogamous Sporophyte Of Pteris Quadriaurita, Var. Argyraea, Moore, Anno Mary Sendik Jun 1930

The Development Of The Gametophyte And The Apogamous Sporophyte Of Pteris Quadriaurita, Var. Argyraea, Moore, Anno Mary Sendik

Bachelors’ Theses

In 1.848 Leszczyc-Suminski reported the appearance of sporophyte tissue element in a fern gametophyte. He observed tracheids near the apical notch of a prothallium of Pteris sulcata L. Wigand (1849) described an outgrowth from the apical notch of a fern prothallium. This was no doubt the development of an apogamous embryo. However, due to the uncertainty regarding the purity of some of his cultures, this development cannot be referred to any particular fern.

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Studies In The Vascular Anatomy Of Picea Excelsa, Link, Mary Paul Mcwilliams Jun 1930

Studies In The Vascular Anatomy Of Picea Excelsa, Link, Mary Paul Mcwilliams

Bachelors’ Theses

Picea excelsa, Link is a native of middle and southern Europe, it has been transplanted to all cool climates, it is found plentiful in western North America, and thrives best in rural districts, away from the smoke and gas of the city.

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Laboratory Applications Of Present Day Knowledge Of The Hormone Of The Anterior Lobe Of The Pituitary Gland, Herman F. Geske May 1930

Laboratory Applications Of Present Day Knowledge Of The Hormone Of The Anterior Lobe Of The Pituitary Gland, Herman F. Geske

Bachelors’ Theses

The history of a pregnancy diagnosis is an old one. In the report of Dr. S. Ashheim is a note which bears this out. The women of ancient Egypt used a rather crude method. Whether it was an efficient test the records do not state. Considering the fact that pregnancy and germination and growth are correlative, these women of the Nile probably were not so far wrong theoretically, whatever the practical results may have been. Their method was to put barley and wheat grains in a pot. These grains were wettened with urine from a woman who thought herself pregnant.

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Forty-Fourth Annual Meeting Of The Iowa Academy Of Science, May 2 And 3, 1930, Iowa Academy Of Science May 1930

Forty-Fourth Annual Meeting Of The Iowa Academy Of Science, May 2 And 3, 1930, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

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A Study Of Preprations From Buckwheat Hulls, Rudolf A. Zivnuska May 1930

A Study Of Preprations From Buckwheat Hulls, Rudolf A. Zivnuska

Bachelors’ Theses

Industry is trying to make use of all possible material. In an age of great manufacturing plants, efficiency Is decreased and costs mount rapidly whenever a waste product tends to be formed in a process. The problem resolves itself into selling someone else the waste products in a modified form, if necessary. At the present time, waste products support industries to which they were formerly a liability. In the Ford wood waste distillation plant in 1929, over $2,100,000 worth of benzol was sold. This is in addition to gas, charcoal, methanol and power gotten from the exothermic action from the …

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Composition Of The Duck And Goose Eggs; Composition Of The Abdominal Adipose Connective Tissue Of The Goose, And Their Related Fat Constants, Albert H. Weisfeld Apr 1930

Composition Of The Duck And Goose Eggs; Composition Of The Abdominal Adipose Connective Tissue Of The Goose, And Their Related Fat Constants, Albert H. Weisfeld

Bachelors’ Theses

It has been the object of the author to present in this thesis the chemical composition of the eggs of the duck and the goose, the chemical composition of the abdominal adipose connective tissue, the fat constants of the visceral fat of the goose, the egg-yolk fat of the goose and duck, and the subcutaneous fat of the goose.

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Swine Sanitation, L. Van Es Mar 1930

Swine Sanitation, L. Van Es

Nebraska Agricultural Experiment Station: Historical Circulars

From the very beginning of Nebraska's agricultural development its farmers have recognized that the production of swine must of necessity accompany the growing of corn. The latter, one of the state's most important staples, cannot be marketed in a more economical manner than after having been transformed into pork, bacon, and lard. As a result the state has for many years maintained a rather dense swine population mainly divided into large herds kept on relatively small areas of land. This density of population, as well as certain practices in management and selective breeding, has brought about conditions favorable for the …

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