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Some Of The Flowering Plants Of Calcasieu Parish, Louisiana, J. M. Lindly Jan 1906

Some Of The Flowering Plants Of Calcasieu Parish, Louisiana, J. M. Lindly

Proceedings of the Iowa Academy of Science

Calcasieu Parish is the largest county in the state of Louisiana. It is about sixty miles east and west, and about fifty miles north and south, and is located in the southwestern part of the state. It adjoins Texas on the west, and is separated from the Gulf of Mexico on the south by only one intervening county. It is bounded on the north by Vernon and Rapids Parishes; on the east by St. Landry, Acadia and Vermilion Parishes; on the south by Cameron Parish; and on the west by the state of Texas. The Sabine River forms its boundary …

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Selections For Arbor And Bird Day, Memorial Day, Iowa. Dept. Of Education Jan 1906

Selections For Arbor And Bird Day, Memorial Day, Iowa. Dept. Of Education

Iowa Book Gallery

A booklet for Iowa teachers giving suggested readings and other items for Arbor and Bird Day and Memorial Day school programs.

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Presidential Address - A Review Of The Development Of Mineralogy, Melvin F. Arey Jan 1906

Presidential Address - A Review Of The Development Of Mineralogy, Melvin F. Arey

Proceedings of the Iowa Academy of Science

Man's interest in and knowledge of some of the commoner minerals such as quartz, mica and calcite, the native metals and the precious stones, must have begun practically with the beginning of his occupancy of the earth and the command given to him to subdue the earth involved bringing its inorganic matters within the range of his knowledge and control. Thus early were the physical sciences authoritatively introduced into the curriculum of the great school of his life.

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Table Of Contents Jan 1906

Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

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Notes On The Discomycete Flora Of Iowa, Fred Jay Seaver Jan 1906

Notes On The Discomycete Flora Of Iowa, Fred Jay Seaver

Proceedings of the Iowa Academy of Science

The following is a list of a number of species of Discomycetes (including Hvsterineae) collected during the last year, which have not been reported in previous papers, also a few notes on other species. This paper is a continuation of the one published in the last volume of the Proceedings of the Iowa Academy of Science, and the number preceding each description is the herbarium number of the species described.

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Electrical Standards, Karl E. Guthe Jan 1906

Electrical Standards, Karl E. Guthe

Proceedings of the Iowa Academy of Science

As soon as any commodity becomes of commercial value a system of practical units has to be established for its measurement. In the case of electrical energy we have fortunately been saved from the natural development of a system of units, a development which has, for example, given us our remarkably complex, incongruous, and unscientific collection of weights and measures. While by no means perfect the electrical units have at least the advantage of being consistent, and being worked out by scientists they have naturally been based upon the metric system.

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1906 Pedagog, Iowa State Normal School Jan 1906

1906 Pedagog, Iowa State Normal School

UNI Yearbooks

The student yearbook of the Iowa State Normal School, later known as the University of Northern Iowa.

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Floristic Notes From An Illinois Esker, Bruce Fink Jan 1906

Floristic Notes From An Illinois Esker, Bruce Fink

Proceedings of the Iowa Academy of Science

Kaneville is a village in Kane County, Illinois, and is situated about fourteen miles from Aurora, Illinois, west by a few degrees north. At Kaneville, the present writer passed several years of his boyhood and early youth, and here it was that he took his first lessons in natural science, learning the names and habits of a considerable number of birds and plants and gaining some inklings of the interesting mysteries of geological science.

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The Forest Trees Of Eastern Nebraska, Charles E. Bessey Jan 1906

The Forest Trees Of Eastern Nebraska, Charles E. Bessey

Proceedings of the Iowa Academy of Science

In studying the distribution of the native forest-trees of Nebraska, I have evidence that most of them have migrated up the Missouri River and westward from it up the rivers which empty into it from the westerly side. A few species have come down from the Rocky Mountains and migrated eastward for greater or less distances.

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Geology Of The Corinth Canal Zone, Charles R. Keyes Jan 1906

Geology Of The Corinth Canal Zone, Charles R. Keyes

Proceedings of the Iowa Academy of Science

At the present time when we are hearing so much about the Panama canal we almost forget that there are other important constructions of this kind in other parts of the world. Of the famous canals there is one about which little mention appears to be made. This is the Corinth ship canal in Greece. It is of special geological interest on account of the fact that it gives a superb cross-section of a sea-beach dating from middle Tertiary times, and continuing to the present time.

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A Study Of The Choroid Plexus, Walter J. Meek Jan 1906

A Study Of The Choroid Plexus, Walter J. Meek

Proceedings of the Iowa Academy of Science

With the exception of scant references in the standard anatomies very little material treating of the choroid plexuses is available to the general student, and in fact many questions of interest concerning these structures still remain unanswered. The object of the author has been to review the subject up to date and to give the result of his own investigations. The work was carried on in the Neurological Laboratory of the University of Chicago.

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The Liliales Of Iowa, T. J. Fitzpatrick Jan 1906

The Liliales Of Iowa, T. J. Fitzpatrick

Proceedings of the Iowa Academy of Science

The order Liliales consists of monocotyledonous plants, having for the most part regular and complete flowers, the perianth being well developed and made up of three or six parts. Ovary compound, superior or inferior.

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Plates Jan 1906

Plates

Proceedings of the Iowa Academy of Science

No abstract provided.

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Mutual Induction And The Internal Resistance Of A Voltaic Cell, L. Begeman Jan 1906

Mutual Induction And The Internal Resistance Of A Voltaic Cell, L. Begeman

Proceedings of the Iowa Academy of Science

The usual method of making a rapid determination of the internal resistance of a voltiac cell, primary or secondary, is by means of the condenser in circuit with a ballistic galvanometer. The deflection of the galvanometer due to the discharge of the condenser is first taken on open circuit with the cell and again when the cell is on a closed circuit the known resistance. The working formula is r=d—d1 over d1xR, in which d and d1 are the different deflections of the galvanometer needle and R is the external resistance of the closed circuit. The …

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Periodical Literature In Iowa On The Subject Of Chemistry, W. S. Hendrixson Jan 1906

Periodical Literature In Iowa On The Subject Of Chemistry, W. S. Hendrixson

Proceedings of the Iowa Academy of Science

Two years ago the author published in the proceedings of the Iowa Academy of Science a list of the chemical periodicals, then present in the libraries in the State. The purpose was, of course, to make known the presence of these periodicals to chemists in the state who have occasion from time to time to use them for reference purposes. Since that date many changes have occurred. Some periodicals have been dropped; more have been added, and many partial files have been made more nearly or quite complete. It seemed best, therefore, to offer a revised list for publication in …

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A Flora Of Webster County, Iowa, O. M. Oleson, M. P. Somes Jan 1906

A Flora Of Webster County, Iowa, O. M. Oleson, M. P. Somes

Proceedings of the Iowa Academy of Science

Webster County lies just north and west of the geographical· center of Iowa and is somewhat larger than any of the surrounding counties having an area of 720 miles. The county is primarily a prairie county, its only forests being narrow strips along the streams. The average elevation of the county as a whole is about 1100 feet. Along the Des Moines River, which crosses the county from north to south, the forest fringe varies from a quarter of a mile to more than three miles in width and is made up of such trees as oak, hickory, elm, ash, …

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Lime Creek Fauna Of Iowa In Southwestern United States And Northern Mexican Region, Charles R. Keyes Jan 1906

Lime Creek Fauna Of Iowa In Southwestern United States And Northern Mexican Region, Charles R. Keyes

Proceedings of the Iowa Academy of Science

Twenty years ago one of our most prominent Iowa scientists, Mr. Frank Springer, announced the discovery of a typical Lower Burlington fauna at Lake Valley, in southern New Mexico. A year ago I had occasion to state before this Academy that this Lake Valley limestone is of wide extent. Now, at Lake Valley there exists beneath the limestones carrying he abundant crinoids of the Lower Burlington a massive, yellow, magnesium limestone very much like the Chouteau limestone of Missouri, and beneath this green and then black shales in all respects like the Kinderhook shales at Burlington. Beneath this section there …

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The Holding And Reclamation Of Sand Dunes And Sand Wastes By Tree Planting, H. P. Baker Jan 1906

The Holding And Reclamation Of Sand Dunes And Sand Wastes By Tree Planting, H. P. Baker

Proceedings of the Iowa Academy of Science

By a dune we mean a low hill of drifting sand usually formed on the sea-coast or shore of large inland lakes. Along the sea-coast the movement of the tide, the flow of which is more rapid than the ebb, tends to carry sand beyond the action of the waves, where it is caught by sea winds and carried up the beach to be piled in dunes and hills.

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A Simple Demonstration Of The Doppler Effect In Sound, Frank F. Almy Jan 1906

A Simple Demonstration Of The Doppler Effect In Sound, Frank F. Almy

Proceedings of the Iowa Academy of Science

The example which is perhaps most frequently cited as an illustration of the Doppler effect is the change of pitch of a locomotive bell or whistle or of a street-car gong in rapid motion, particularly as heard by a person on board a car passing rapidly in the opposite direction on a parallel track. To the use of this illustration Professor R. W. Wood objects on the ground that "scarcely one person in ten has any distinct recollection of having noticed the phenomena unless his attention has been directed to it".

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The Physical Laboratory At Iowa College, Frank F. Almy Jan 1906

The Physical Laboratory At Iowa College, Frank F. Almy

Proceedings of the Iowa Academy of Science

With the completion of the new library building, the gift of Andrew Carnegie, the old library building, Goodnow Hall, became available for Physics and Mathematics. The building is a very substantial red stone building, finished throughout in hard wood.

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Cladocera Of Des Moines And Vicinity, B. O. Gammon Jan 1906

Cladocera Of Des Moines And Vicinity, B. O. Gammon

Proceedings of the Iowa Academy of Science

This investigation was begun in April, 1901 and collections were made at various intervals during that spring. During the summer of 1901 eight or nine weeks were spent in collecting and identifying specimens. Again in the summer of 1902 the work was taken up for about five weeks and during the early part of the summer of 1903 further collections were made. At odd times during all this period new specimens have been noted as they were found in material collected for work in the Drake Zoological Laboratories.

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Index; Author's Index Jan 1906

Index; Author's Index

Proceedings of the Iowa Academy of Science

No abstract provided.

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The Carotid Arteries And Their Relation To The Circle Of Willis In The Cat, H. W. Norris Jan 1906

The Carotid Arteries And Their Relation To The Circle Of Willis In The Cat, H. W. Norris

Proceedings of the Iowa Academy of Science

The value of the domestic cat as an object of dissection in work introductory to comparative anatomy in general and to mammalian anatomy in particular, makes it important that our knowledge of this form should be as exact as possible.

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Municipal Hygiene - Part Ii - Milk, C. O. Bates Jan 1906

Municipal Hygiene - Part Ii - Milk, C. O. Bates

Proceedings of the Iowa Academy of Science

It is the purpose of this paper to help popularize the scientific facts that have been discovered by the research laboratories which are controlled and fostered by our national government and individual States of the Union, and by the laboratories of the denominational institutions of higher education. Vast sums of money are spent each year to maintain such work. No one can question their efficiency or practical value. Such knowledge is not prized as highly as it should be, nor are the discoveries as thoroughly known as they should be. The bulletins that are issued from the various stations are …

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Dolomite And Magnesite With Reference To The Separation Of Calcium And Magnesium, Nicholas Knight, Ward H. Wheeler Jan 1906

Dolomite And Magnesite With Reference To The Separation Of Calcium And Magnesium, Nicholas Knight, Ward H. Wheeler

Proceedings of the Iowa Academy of Science

The estimation of calcium and magnesium in a mineral or rock is frequently necessary and seems like a simple matter, yet a great deal of work has been done on the subject, and different views are held as to the best procedure. The method that he has become accustomed to is doubtless the best for the individual analyst or teacher. Some of the methods, however, seem to be more simple and direct, and therefore less likely to lead to error than other processes which have been devised.

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The Effects Of Presssure Upon Lines In The Spectrum Of Iron, Frank F. Almy Jan 1906

The Effects Of Presssure Upon Lines In The Spectrum Of Iron, Frank F. Almy

Proceedings of the Iowa Academy of Science

Humphreys and Mohler, in 1896-7, made an extended study of the effect of pressure upon the wave frequencies of the lines of the emission spectra of a larger number of the metallic elements. The source used was an enclosed electric arc about which the air pressure could be varied, the pressure being carried up to fourteen atmospheres. The results of their experiments indicate that all isolated lines shift toward the red end of the spectrum with increased pressure, the shift being proportioned to the wave length for lines of a given series, but the factor of proportionality being different for …

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Title Page - Letter Of Transmittal, L. S. Ross Jan 1906

Title Page - Letter Of Transmittal, L. S. Ross

Proceedings of the Iowa Academy of Science

No abstract provided.

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Photographic Accessories Of The Drake Observatory, D. W. Morehouse Jan 1906

Photographic Accessories Of The Drake Observatory, D. W. Morehouse

Proceedings of the Iowa Academy of Science

The application of photography to astronomical research is one of the great achievements of science. While the "pioneering experiments" date back to the days of Dr. J. W. Draper and Warren de la Rue, the vastly interesting and valuable results belong to the present decade. Astro-physics, "the new-born child of Astronomy'', owes its phenomenal growth and development, if not its birth, to the photographic lens and camera.

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An Observation On The Number Of Bacteria In Des Moines School Buildings, L. S. Ross Jan 1906

An Observation On The Number Of Bacteria In Des Moines School Buildings, L. S. Ross

Proceedings of the Iowa Academy of Science

At the request of the President of the Polk County Medical Society in November of last year, 1905, I made a little investigation into the bacteriological conditions of the school buildings of Des Moines.

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Some Diseases Of Rocky Mountain Plants, L. H. Pammel Jan 1906

Some Diseases Of Rocky Mountain Plants, L. H. Pammel

Proceedings of the Iowa Academy of Science

Only a very small beginning has been made of the study of the parasitic fungi of the Rocky Mountain Region. A large number of interesting parasitic diseases affecting the cultivated plants, trees and shrubs, as well as herbaceous plants, occur in the Rocky Mountain region. The diseases that I have discussed constitute only a small part of those occurring here.

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