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Bird Records For The Season 1919-1920 In The Vicinity Of Iowa City, Dayton Stoner Jan 1920

Bird Records For The Season 1919-1920 In The Vicinity Of Iowa City, Dayton Stoner

Proceedings of the Iowa Academy of Science

Although the present report is based on notes and observations made, for the most part, in the vicinity of Iowa City, a few records are included from points some distance away. The records herein given cover the time between May 1, 1919, and March 10, 1920.

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In Memoriam: Herbert R. Werner; R. Ellsworth Call, Albert Hartzell, Charles Keyes Jan 1920

In Memoriam: Herbert R. Werner; R. Ellsworth Call, Albert Hartzell, Charles Keyes

Proceedings of the Iowa Academy of Science

No abstract provided.

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The Conservation Of Underground Waters, James H. Lees Jan 1920

The Conservation Of Underground Waters, James H. Lees

Proceedings of the Iowa Academy of Science

Ranking with the soil and the atmosphere, water is recognized as being one of the absolute essentials of existence. We are all familiar with the fact that where water is absent - or unavailable, which is equivalent - life likewise is absent or nearly so. It is difficult, perhaps needless, to decide which is the most necessary, soil, air, or water, all are so intimately interwoven into the complex relationships of life. Not only is that water which is exterior to the organic creation an essential to the continued well-being of that creation but much the greater bulk of animal …

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Iowa State Teachers College Program Of Recitations, Summer 1919, Iowa State Teachers College Jul 1919

Iowa State Teachers College Program Of Recitations, Summer 1919, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

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Table Of Contents Jan 1919

Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

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Notes On The Occurrence Of Warts On Cottontail Rabbits, J. E. Guthrie Jan 1919

Notes On The Occurrence Of Warts On Cottontail Rabbits, J. E. Guthrie

Proceedings of the Iowa Academy of Science

About twelve years ago my attention was drawn to some interesting epithelial growths on the head of a cottontail rabbit which was sent to the college by Mr. J. Schuyler Long, who wrote from the Iowa School for the Deaf at Council Bluffs. The head and accompanying letter were referred to Professor H. E. Summers, then head of the Department of Zoology at Iowa State College. The letter reads: "I am sending you a rabbit's head... It has several curious growths which resemble horns. I have killed a great many rabbits but never saw anything like it before. I should …

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The Address Of The President - Some Problems In Conservation, Samuel Walker Beyer Jan 1919

The Address Of The President - Some Problems In Conservation, Samuel Walker Beyer

Proceedings of the Iowa Academy of Science

The credit for directing the attention of the public to the almost universal waste of the Nation's resources must be accorded to the late President Theodore Roosevelt. The great President was not only the originator of the movement but continued to be its most aggressive and enthusiastic apostle and promoter. The idea first found definite expression in his address before the Society of American Foresters, March 26, 1903, in which he emphasized the necessity of forest preservation and pointed out the close relationship between the forests and stream flow.

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Grass-Hopper Control Work In Iowa, H. E. Jaques Jan 1919

Grass-Hopper Control Work In Iowa, H. E. Jaques

Proceedings of the Iowa Academy of Science

Grass-hopper depredations to farm crops have been of frequent occurrence in Iowa, and figure to a certain extent in the loss account of almost every year in at least some part of the state. Attacks during the summer of 1918 seem to have been the most extensive of recent years. Early in June the young nymphs were seen in great numbers in many of the counties in the southwestern part of the state and a few weeks later they had reached the same stage in the southeastern part of the state. As this indicates, complaints of serious damage came first …

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A Herpetocrinus From The Silurian Of Iowa, A. O. Thomas Jan 1919

A Herpetocrinus From The Silurian Of Iowa, A. O. Thomas

Proceedings of the Iowa Academy of Science

Recently while the writer was sorting some collections which he and some of his students had gathered a few years ago at Monticello, he came upon a specimen of the rare crinoid Herpetocrinus. The specimen was almost wholly covered by the matrix and it was removed only after much patient cleaning. Further search among the material added three short pieces of stems while a drawer of specimens from the same locality, collected by Mr. J. V. Henley about 1907, contains a coiled stem labeled, "Crinoid stem, Monticello, Iowa, J. V. H." This, too, belongs to Herpetocrinus. As far as known, …

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Index Jan 1919

Index

Proceedings of the Iowa Academy of Science

No abstract provided.

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Animal Tracks, Food And Disposition: Is There Any Relation?, E. L. Palmer Jan 1919

Animal Tracks, Food And Disposition: Is There Any Relation?, E. L. Palmer

Proceedings of the Iowa Academy of Science

"He that runs may read" but he that runs may also be read and the reading of the tracks of birds and animals may lead to some very interesting observations. When speeding all animals move essentially alike so the following conclusions are based upon the method of locomotion adopted by the animal when moving slowly. This is shown in the first line of tracks under those given for each species.

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The Birds Of Marshall County, Iowa, Ii, Ira N. Gabrielson Jan 1919

The Birds Of Marshall County, Iowa, Ii, Ira N. Gabrielson

Proceedings of the Iowa Academy of Science

The continuation of a survey of the birds of Marshall County, Iowa.

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The Correlation Of Art And Science In The Museum, Homer R. Dill Jan 1919

The Correlation Of Art And Science In The Museum, Homer R. Dill

Proceedings of the Iowa Academy of Science

What is it that makes the museum a success? I believe this question may be satisfactorily answered by a careful study of the people who visit museums. Go to some good museum and stroll quietly about among the groups of spectators and listen to their remarks; note carefully the types of exhibits that attract their attention, occasion their comment, and hold their interest. If you are interested and wish to follow up your investigation, go again and as often as you are able. You may thereby get some suggestions for building a museum for the public that never would occur …

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Variations In The Branches Of The Coeliac Arterty In The Rabbit, H. R. Werner Jan 1919

Variations In The Branches Of The Coeliac Arterty In The Rabbit, H. R. Werner

Proceedings of the Iowa Academy of Science

It has been noted in some mammals, and no doubt this is true for most species, that there is considerable variation from what is ordinarily understood as the normal condition in the origin and arrangement of certain arteries and veins. Such variations have been reported concerning the origin of groups of vessels, such as the arteries which arise from the systemic aorta and supply the head, neck and fore limbs. Similar conditions have been observed in the post cava and the venous system in general in some mammals. Even the blood vessels in man, both arteries and veins, are subject …

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Thomisidae Of The Ames Region, I. L. Ressler Jan 1919

Thomisidae Of The Ames Region, I. L. Ressler

Proceedings of the Iowa Academy of Science

The spiders of the family Thomisidae are commonly called crab spiders. They are so-called because of the characteristic crablike attitude in which they hold the legs and because they can walk as readily sidewise or backward as forward. The first two pairs of legs are usually considerably longer and stouter than the third and fourth pairs. The tarsi are two-clawed. The eyes are small and arranged in two rows, both of which are almost always recurved.

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The Composition And Digestibility Of Sudan Grass Hay, W. G. Gaessler, A. C. Mccandlish Jan 1918

The Composition And Digestibility Of Sudan Grass Hay, W. G. Gaessler, A. C. Mccandlish

Proceedings of the Iowa Academy of Science

The introduction of Sudan grass (Andropogon sorghum var.) into the United States took place less than nine years ago, but since then this crop has become widely known and its popularity is rapidly increasing. Sudan grass, being an annual, does not make a good pasture plant, but gives excellent results as a hay or soiling crop; it might also be successfully made into silage if mixed with a legume.

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The General Classification Of Higher Plants, Henry S. Conard Jan 1918

The General Classification Of Higher Plants, Henry S. Conard

Proceedings of the Iowa Academy of Science

A large part of our thinking about living things is bound up with some system of classification. This system is at once the product of the best thought, and a guide to further thinking. The function of classification as a guide is peculiarly important to beginners. It is therefore extremely desirable that classification should represent correctly the most approved conclusions of the science in question. At the present time current usage in botanical classification is not in harmony with the most approved conclusions. The following tabulation and discussion is an attempt to express recent morphological thought in its bearing on …

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1918 Old Gold, Iowa State Teachers College Jan 1918

1918 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 1918

Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

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A Preliminary List Of The Acarina Of Iowa, Albert Hartzell Jan 1918

A Preliminary List Of The Acarina Of Iowa, Albert Hartzell

Proceedings of the Iowa Academy of Science

In 1886, Professor Herbert Osborn and Professor L. M. Underwood published, in the "Canadian Entomologist," a preliminary list of the Acarina of North America. This list included 99 species in 28 genera. In 1907, Nathan Banks published his "Catalog of the Acarina, or Mites, of the United States," which includes about 450 species in 133 genera. This number probably represents less than one-third of our mite population.

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Cumulative Index, Volumes I To Xxv, 1887-1918 Jan 1918

Cumulative Index, Volumes I To Xxv, 1887-1918

Proceedings of the Iowa Academy of Science

No abstract provided.

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A Study Of The Pollen And Pistils Of Apples In Relation To The Germination Of The Pollen, J. N. Martin, L. E. Yocum Jan 1918

A Study Of The Pollen And Pistils Of Apples In Relation To The Germination Of The Pollen, J. N. Martin, L. E. Yocum

Proceedings of the Iowa Academy of Science

The failure of a fruit tree to develop a normal amount of fruit may be due to a number of causes as stated by Kraus in volume VI of the Journal of Heredity. However, unless a plant develops fruit parthenocarpically, the development of fruit depends primarily upon how the pollen and pistil function relative to each other. As Kraus points out, fertilization by no means insures the development of a fruit, for very commonly the fruit does not develop despite the fact that normal fertilization occurred, but, on the other hand, in the absence of fertilization, fruit seldom develops among …

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Some Problems Of Water Supply For Troops, Jack J. Hinman Jr. Jan 1918

Some Problems Of Water Supply For Troops, Jack J. Hinman Jr.

Proceedings of the Iowa Academy of Science

The problems of water supply under field conditions are very different from those of the average city or town, even though the same fundamental principles apply to both. The city or town will in all probability make an extensive and careful survey of all water supply prospects and then choose that source which seems likely to offer the cheapest means of getting enough water that will be safe to use for drinking and other domestic purposes. Once the source is decided upon, expensive pumping and purification plants are erected and a complex distribution system is installed. A high degree of …

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Milk As The Sole Diet Of Ruminants, A. C. Mccandlish Jan 1918

Milk As The Sole Diet Of Ruminants, A. C. Mccandlish

Proceedings of the Iowa Academy of Science

From time immemorial milk has been regarded as the food best adapted to the nourishing of mammalia. It is the sole diet of all mammals during the earlier part of their postnatal development and is also recognized as an excellent staple in the diet of the adult human, especially in the case of invalids. On the farm it is used extensively in the feeding of young animals and in the case of the hog it is fed in large quantities to more mature individuals.

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An Unusual Example Of Incisor Growth In The Western Fox Squirrel, Dayton Stoner Jan 1918

An Unusual Example Of Incisor Growth In The Western Fox Squirrel, Dayton Stoner

Proceedings of the Iowa Academy of Science

A short time ago a partly broken skull of the Western Fox Squirrel, (Sciurus niger rufiventer (Geoffroy), bearing a curiously formed upper incisor was brought to me for examination by Mr. W. F. Kubichek, now of the Children's Museum, Brooklyn, New York. The animal was evidently an adult and was killed near Homestead, Iowa, November, 1917. The lower mandible as well as the posterior portion of the brain case is missing.

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Pharyngeal Derivates Of Amblystoma, Francis Marsh Baldwin Jan 1918

Pharyngeal Derivates Of Amblystoma, Francis Marsh Baldwin

Proceedings of the Iowa Academy of Science

The recognition, within recent years, of the parts played by certain structures arising from the walls of the human pharynx, in health and disease, renders these bodies of great interest, and hence all facts which throw light upon their morphology are of value. It was from such considerations that the writer under took the study detailed in this paper, for, while a knowledge of their development in amphibia may have no immediate practical value, the close relations of that group to the ancestry of the mammals gives every addition to our knowledge an interest which would not be expected with …

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The Influence Of Floods Upon Animals, D. M. Brumfiel Jan 1918

The Influence Of Floods Upon Animals, D. M. Brumfiel

Proceedings of the Iowa Academy of Science

The attention of the writer was first called directly to this problem by certain observations made along the White Water River, in southeastern Indiana, at the time of the great flood which swept that section of the country in the spring of 1913 —- generally known as the Dayton Flood. The writer was attempting to make collections of insects in the bottom lands of this small tributary of the Ohio river between the downpours of rain on Monday, March 24, 1913, at the time when that particular stream overflowed its banks. The observation that certain forms of animal life were …

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The Life And Behavior Of The House Spider, H. E. Ewing Jan 1918

The Life And Behavior Of The House Spider, H. E. Ewing

Proceedings of the Iowa Academy of Science

Few species of invertebrates come under our everyday observation more than the common house spider, Theridion tepidariorum K. It is a familiar object in attics and in basements, in cellars and in outhouses of all kinds, in fact it will be found in almost any of the situations where there is shelter and moisture, and where insects may be found in sufficient numbers for food. In looking up the literature relating to this spider the writer was surprised to find that no one, apparently, had worked out its life history or made systematic observations on its habits.

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Spiders Of The Family Attidae Collected In The Vicinity Of Ames, Iowa, I. L. Ressler Jan 1918

Spiders Of The Family Attidae Collected In The Vicinity Of Ames, Iowa, I. L. Ressler

Proceedings of the Iowa Academy of Science

In this work with the Attidae collected in the vicinity of Ames the writer used Banks' arrangement in the separation of genera and species. A few of the specimens were collected by Prof. C. P. Gillette in 1888-90 and identified by Banks in 1891; some were collected during the summer of 1916 by L. S. Wells while others were collected during the fall of 1916 and spring of 1917 by the writer, who has identified all except those that were collected by Prof. Gillette.

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Notes On The Floristic Features Of A Prairie Province In Central Iowa, Ada Hayden Jan 1918

Notes On The Floristic Features Of A Prairie Province In Central Iowa, Ada Hayden

Proceedings of the Iowa Academy of Science

The primeval prairie of Iowa is fast vanishing. This region where grass grew tall and prairie fires yearly swept over expanses bounded by the horizon or broken here and there by zones of forest along the streams, man, one of the most important of ecological forces, has selected for his permanent habitat. The prairie of former years now lingers in small patches bounded by wire fences and known as hay fields; or where the less ambitious farmer has failed to insert an arterial system of tile, occasional sloughs and swamps furnish homes for hosts of sturdy cattails, slim reeds, plumy …

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