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Notes On Some Iowa Rodents, Dayton Stoner Jan 1917

Notes On Some Iowa Rodents, Dayton Stoner

Proceedings of the Iowa Academy of Science

During portions of the past three summers some investigations of the rodents of Iowa have been made under the auspices of the Iowa Geological Survey. These studies have been carried on more particularly in an attempt to determine the economic status of this group of animals in the state but other phases of the work such as matters of distribution, local abundance, etc., of the various species have also been included.

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The Protein Content And Microchemical Tests Of The Seeds On Some Common Iowa Weeds, L. H. Pammel, Arthur W. Dox Jan 1917

The Protein Content And Microchemical Tests Of The Seeds On Some Common Iowa Weeds, L. H. Pammel, Arthur W. Dox

Proceedings of the Iowa Academy of Science

Weed seeds are recognized as an important factor in the dietary of our useful birds. Other things being equal, those seeds having the highest nutritive value might be expected to figure more prominently in this regard than seeds less nutritious. In animal feeding, the protein content of the feed is taken as the measure of its nutritive value, and the cost of the feed is determined largely by the protein content as ascertained in the chemical laboratory. Hence the protein content of weed seeds is of some economical importance as related both to the maintenance of our native birds and …

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1917 Old Gold, Iowa State Teachers College Jan 1917

1917 Old Gold, Iowa State Teachers College

UNI Yearbooks

The student yearbook of the Iowa State Teachers College, later known as the University of Northern Iowa.

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Some Fundamental Concepts Of Earth History, James H. Lees Jan 1917

Some Fundamental Concepts Of Earth History, James H. Lees

Proceedings of the Iowa Academy of Science

We have been accustomed to think, most of us, that in the early days of the world's geologic history Nature manifested herself in forms different from those with which we are familiar; that God, the supreme Power of the universe, employed other types of energy than those by means of which He works today. And these conceptions have been fostered and influenced very largely, consciously or unconsciously, by our religions and theological training.

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Further Notes On The Venous Connections Of The Lymphatic System In The Common Rat, Thesle T. Job. Jan 1917

Further Notes On The Venous Connections Of The Lymphatic System In The Common Rat, Thesle T. Job.

Proceedings of the Iowa Academy of Science

As long ago as 1825 the Italian anatomist, R. Lippi, published a paper on “Illustrazioni fisiologiche e patologiche del sistems linfalico-chilifero mediante la scoperta di un gran numbero di comunicazioni de esso col venoso” in which he brought out the fact that the lymphatics not only connect with the veins at the Jugulo-subclavian juncture but also join the Inferior Vena Cava and Portal vein. 49. Mites affecting-According to the plan of nature animals are compelled either directly or indirectly to lay under tribute the plant world in order to obtain food; and so completely have they done so that it …

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Amino Acid And Micro-Organisms, Arthur W. Dox Jan 1917

Amino Acid And Micro-Organisms, Arthur W. Dox

Proceedings of the Iowa Academy of Science

The study of amino acids has come to be recognized during recent years as a subject of tremendous importance, on account of its fundamental relation to the problems of human and animal nutrition. Not many years since, all proteins were thought to be of equal nutritive value. Now we know that many of the proteins are deficient in one or more amino acids, and cannot support life and growth unless supplemented by other proteins which make up the deficiency. And from a study of the proteins with reference to their amino acid make-up, the study of the amino acids …

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An Annotated List Of The Mammals Of Sac County, Iowa, J. A. Spurrell Jan 1917

An Annotated List Of The Mammals Of Sac County, Iowa, J. A. Spurrell

Proceedings of the Iowa Academy of Science

My purpose in writing this list is to place on record data gathered principally from the pioneers of Sac County about the conditions in pioneer days and since. While these data are not as accurate as though they were confirmed by specimens, they are better than no information at all. I have used extreme care in differentiating species and have included some observations of my own made in the more recent years. I have also included some data on adjoining counties.

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The Eyeball And Associated Structures In The Blindworms, H. W. Norris Jan 1917

The Eyeball And Associated Structures In The Blindworms, H. W. Norris

Proceedings of the Iowa Academy of Science

Incidental to a more extended investigation of coecilian anatomy the following observations were made upon the ocular muscles and nerves.

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The Influence Of The Male On Litter Sizes, Edward N. Wentworth Jan 1917

The Influence Of The Male On Litter Sizes, Edward N. Wentworth

Proceedings of the Iowa Academy of Science

A common belief among practical breeders is that the male in multiparous species affects the number at a birth. This belief has even permeated scientific writing; many biologist apparently taking the supposed observation at face value, while others have sought biometrical proof in the various accumulations of the data regarding fertility inheritance found in biological records.

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The Origin Of The St. Peter Sandstone, Arthur C. Trowbridge Jan 1917

The Origin Of The St. Peter Sandstone, Arthur C. Trowbridge

Proceedings of the Iowa Academy of Science

Originally, all sedimentary rocks were thought to be marine. When the St. Peter sandstone was first recognized as a distinct formation, it was assumed to have had a marine origin. More recently, however, the marine origin of many sediments has been doubted, and the criteria for distinguishing various sorts of sedimentary rocks have been worked out. As early as 1907 evidences were presented for the eolian origin of the St. Peter sandstone, although there are those who have never accepted the evidence as conclusive. In the literature of the subject, the matter is not settled.

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The Separation And Gravimetric Estimation Of Potassium, S. B. Kuzirian Jan 1917

The Separation And Gravimetric Estimation Of Potassium, S. B. Kuzirian

Proceedings of the Iowa Academy of Science

The market value of chloroplatinic acid, particularly under present conditions, is so high as to warrant a careful search for some cheaper reagent for the determination of potassium. Serullas, as early as 1831, proposed taking advantage of the insolubility of potassium perchlorate in concentrated alcoholic solutions and applying it as a reagent for the estimation of potassium. Unfortunately his proposal did not receive the attention it deserved because a convenient method for the preparation of perchloric acid had not at that time been worked out. Lately, Kreider elaborated a method for the preparation of perchloric acid in large enough quantities …

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Observations On The Protozoa - With Descriptions And Drawings Of Some Probable New Species, Clementina S. Spencer Jan 1917

Observations On The Protozoa - With Descriptions And Drawings Of Some Probable New Species, Clementina S. Spencer

Proceedings of the Iowa Academy of Science

In 1906 The Davenport Academy of Sciences published a thesis by Dr. C. II. Edmonson on the Protozoa of Iowa which is the best list, so far compiled, of the protozoa known to occur in the waters of this state. During my recent observations of these always interesting organisms I have found a number of species which may be considered an addition to Edmondson 's list, including: some forms which further observation may prove to be new. With the list of these are included some notes on more common forms; which may be of interest to students of protozoology.

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Mites Affecting The Poison Oak, H. E. Ewing Jan 1917

Mites Affecting The Poison Oak, H. E. Ewing

Proceedings of the Iowa Academy of Science

According to the plan of nature animals are compelled either directly or indirectly to lay under tribute the plant world in order to obtain food; and so completely have they done so that it is doubtful if any, among the many thousands of species of the latter, are exempt from attack. Being thus exposed to the wholesale appetites of higher creation plants have been forced into the evolution of devices for warding off animal attacks.

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Notable Mound Groups In And Near The Proposed Government Park At Mcgregor, Iowa, Ellison Orr Jan 1917

Notable Mound Groups In And Near The Proposed Government Park At Mcgregor, Iowa, Ellison Orr

Proceedings of the Iowa Academy of Science

Something over a year ago a move was started to ask Congress to set aside a tract of land lying along the Mississippi River south of McGregor in Clayton County of this state, and directly opposite the mouth of the Wisconsin river, as a National Forest Preserve or park.

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Bell's Vireo Studies (Vireo Belli Aud.), Walter W. Bennett Jan 1917

Bell's Vireo Studies (Vireo Belli Aud.), Walter W. Bennett

Proceedings of the Iowa Academy of Science

There exists in the central United States, from South Dakota and Illinois to Texas and Mexico, a bird which has interested students in that region to no small extent. It has been interesting not because of any phenomenal habits or any beautiful color, but because of its modesty of dress and its elusive habits. Although common in its range it seems to have been little studied by the bird student.

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The Development Of Musk Glands In The Loggerhead Turtle, Frank A. Stromsten Jan 1917

The Development Of Musk Glands In The Loggerhead Turtle, Frank A. Stromsten

Proceedings of the Iowa Academy of Science

Musk glands were first described in turtles by Dr. William Peters in 1848, and independently, in the same year, by Rathke. The glands do not appear to be present in all turtles, but when present consist of one or two pairs according to the species of turtle. One pair is located at the anterolateral angles of the carapace, just beneath the peritoneum. The second pair, when present, is found at the posterolateral angles, one on each side. According to Peters, the secretion is a brownish, watery fluid, tasteless, but having a very penetrating odor. The glands are compared to the …

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Some New Endoparasites Of The Snake, Thesle T. Job. Jan 1917

Some New Endoparasites Of The Snake, Thesle T. Job.

Proceedings of the Iowa Academy of Science

In the fall of 19l6 a large, live specimen of Black Snake, Zamenis constrictor (Linn.), was sent from Garrison-on-Hudsen, New York, to Miss G. Van Wagenen of the State University of Iowa. In December the snake was killed and dissected. At that time three different endoparasites were found which were classified according to the present inadequate and chaotic literature on these groups, as Porocephalus globicephalus Hett, a new Renifer und a larval Gigantorhynchus.

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A Method Of Preparing Studies Of Trichinella Spiralis Owen, T. T. Job, Dayton Stoner Jan 1916

A Method Of Preparing Studies Of Trichinella Spiralis Owen, T. T. Job, Dayton Stoner

Proceedings of the Iowa Academy of Science

This work was first attempted with the idea in mind of securing an adequate supply of laboratory material of Trichinella spiralis for classes in invertebrate Zoology at the State University of Iowa.

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1916 Old Gold, Iowa State Teachers College Jan 1916

1916 Old Gold, Iowa State Teachers College

UNI Yearbooks

The student yearbook of the Iowa State Teachers College, later known as the University of Northern Iowa.

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Table Of Contents Jan 1916

Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

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A Modern School, Abraham Flexner Jan 1916

A Modern School, Abraham Flexner

History of Education Book Gallery

A Modern School is a 23-page occasional paper, written by Abraham Flexner and published in 1916 by The General Education Board. Flexner (1866-1959) was an American educator and education reformer. The occasional paper presented here addresses many of the perceived failings of the public school system circa 1916 and suggests several reforms. The General Education Board was established by John D. Rockefeller in 1903. According to the Rockefeller Foundation, the board was established to aid education in the U.S. without distinction of race, sex or creed, and was active in promoting the public school movement in the early part of …

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A Forest Census In Lyon County, Iowa, David H. Boot Jan 1916

A Forest Census In Lyon County, Iowa, David H. Boot

Proceedings of the Iowa Academy of Science

The northwest corner of Iowa has comparatively few native trees because of the xerophytic conditions which prevail there. The rainfall of this part of the state is the least in Iowa, at times going as low as eighteen inches for the year, and in exposed regions, the forest trees have been unable to obtain a footing. The native trees are nearly all found along the streams or in protected valleys. A good illustration of this is in Centennial Township in the southwestern corner of Lyon County, where the Big Sioux River flows in a westerly direction for several miles at …

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An Hermaphroditic Crayfish Of The Species Cambarus (Faxonius) Obscurus Hagen, I. L. Ressler Jan 1916

An Hermaphroditic Crayfish Of The Species Cambarus (Faxonius) Obscurus Hagen, I. L. Ressler

Proceedings of the Iowa Academy of Science

Recently, in the course of my work in the laboratory, an abnormally developed crayfish was brought to my attention. This animal had present both male and female characters. The length of this apparent hermaphrodite is 77mm. somewhat smaller than the average for this group.

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Successful "Mink Farming" In Iowa, B. H. Bailey Jan 1916

Successful "Mink Farming" In Iowa, B. H. Bailey

Proceedings of the Iowa Academy of Science

Through the kindness of Prof. C. C. Nutting, Senator Lambert and his brother, Mr. C. Lambert, of Sabula, Iowa, the writer was afforded an opportunity to visit and study the "mink farm" owned by Mr. C. Lambert and J. E. Densmore, of Sabula, Iowa.

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Additional Notes On The Little Spotted Skunk, Spilogale Interrupta Raf., B. H. Bailey Jan 1916

Additional Notes On The Little Spotted Skunk, Spilogale Interrupta Raf., B. H. Bailey

Proceedings of the Iowa Academy of Science

In volume XXII of the Proceedings of the Iowa Academy of Science, it was shown that the Little Spotted Skunk is state wide in its distribution. Since writing the last article, I have received specimens from Muscatine, Iowa, from Mr. J. Greenblatt; also from Mr. Christian Hoeg, of Decorah, Iowa, who states that they seem to be quite common in that vicinity; and also from Sabula, Iowa, at which place Mr. J. C. Day and son had received during the winter of 1915 and 1916, up to the 17th of March, 1916, twenty-five pelts of "civet cats," trapped in the …

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How A Tree Grows, Fred Berninghausen Jan 1916

How A Tree Grows, Fred Berninghausen

Proceedings of the Iowa Academy of Science

Professor Ebermeier of Munich, Germany says: "When the leaves take carbonic acid from the air they break it up and force its carbon into new chemical compounds which are then stored away as new material in the tree. The forest is the most highly organized portion of the vegetable kingdom." No man can really know the forest without feeling the gentle influence of one of the kindest and strongest parts of nature. It is the most helpful friend of man.

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Notes On Iowa Pentatomoidea, Dayton Stoner Jan 1915

Notes On Iowa Pentatomoidea, Dayton Stoner

Proceedings of the Iowa Academy of Science

The average person usually refers to almost any· kind of insect as a "bug" but, employing the latter term in its proper sense, it represents the common name of an insect which belongs to one of the largest and best represented groups in North America. All bugs belong to the order Hemiptera which name is derived from the character of the fore wings though wings are not present in all members of the order.

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Some Unique Niagaran Cephalopods, A. O. Thomas Jan 1915

Some Unique Niagaran Cephalopods, A. O. Thomas

Proceedings of the Iowa Academy of Science

Among the paleontological collections at the State University of Iowa are some unique cephalopod remains. It is the purpose of this paper to call attention to a few of them and it is hoped that at some later time the rich Niagaran fauna of which these are a part shall receive more extensive treatment.

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Pioneer Plants On A New Levee, Frank E. A. Thone Jan 1915

Pioneer Plants On A New Levee, Frank E. A. Thone

Proceedings of the Iowa Academy of Science

A year ago this spring the city of Des Moines cut a new channel and mouth for the Raccoon River, causing it to change its course for a distance of about half a mile and to empty into the Des Moines River a little more than half that distance below its old mouth. The bulk of the excavated material was piled upon the south bank of the new channel to form a levee about fifteen feet high, sixty feet wide at the base, and twelve feet wide at the top, with a space of twelve feet intervening between the foot …

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Early Iowa Locality Records, B. Shimek Jan 1915

Early Iowa Locality Records, B. Shimek

Proceedings of the Iowa Academy of Science

Students of plant and animal distribution are naturally interested in exact geographic designation, and they frequently suffer inconvenience from the inaccuracy or misconception of locality names. Confusion in our western records sometimes arises because the earlier explorers worked in an unsettled wilderness in which accurate geographic designation was difficult or impossible, and again from the fact that names were often at first applied to larger areas than those to which the name is at present restricted.

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