Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Northern Iowa

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 35101 - 35130 of 36015

Full-Text Articles in Entire DC Network

Notes On A Thermophilic Bacillus, R. Earle Buchanan Jan 1904

Notes On A Thermophilic Bacillus, R. Earle Buchanan

Proceedings of the Iowa Academy of Science

That group of plants capable of growth and reproduction at temperatures high above the normal or ordinary has long been an object of interest and study among scientists. An examination of any systematic treatise on the Schizophyceae will be rewarded by a considerable list of species that grow in hot springs, etc. In Rabenhorst's "Flora Europa Algarum" for instance, there are no fewer than thirteen genera having species or varieties characterized as "thermalis," while others are known to live in water having a temperature of 80°-93° C. Conspicuous and abundant as the Schizophyceae are in these thermal waters, yet …

Go to article

An Annotated List Of Iowa Discomycetes, Fred Jay Seaver Jan 1904

An Annotated List Of Iowa Discomycetes, Fred Jay Seaver

Proceedings of the Iowa Academy of Science

The Discomycetes include a large and much neglected group of fungi, variable in form and size and of wide distribution. During the last three seasons, a large number of local species have been added to those already reported, and in this paper an attempt has been made to bring together and list the species reported from the state. Those forms described and illustrated in the "Bulletin of Natural History" of the State University of Iowa (Vol. V, No. 4) are repeated here, and those which have not been described and figured will appear in a later edition of the same …

Go to article

The Biology Of The Bacillus Violaceus Laurentius Or Pseudomonas Janthina, Grace Roodde Rueda Jan 1904

The Biology Of The Bacillus Violaceus Laurentius Or Pseudomonas Janthina, Grace Roodde Rueda

Proceedings of the Iowa Academy of Science

The first mention of pigment producing growth is of great antiquity. It aroused the suspicion of the ancients, worked on the religious zeal of the people of the Middle Ages, and today solicits the study and investigation of modern scientists. In the light of our present cultural means of study the chromogenic group of bacteria is especially interesting. The products can be easily watched and as easily segregated. Each organism can be classed together under color and can thus be definitely recognized. The B. prodigiosus is such an organism. It responds fully to laboratory methods. It has been thoroughly studied …

Go to article

The Synthesis Of Ethyl Alcohol From Acetylene, J. C. Frazee Jan 1904

The Synthesis Of Ethyl Alcohol From Acetylene, J. C. Frazee

Proceedings of the Iowa Academy of Science

Introduction. Ethyl Alcohol, its ordinary formation and physical properties. Acetylene and its properties. Its formation from calcium carbide.

Go to article

Index Jan 1904

Index

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Plants New To The Flora Of Decatur County, Iowa, J. P. Anderson Jan 1904

Plants New To The Flora Of Decatur County, Iowa, J. P. Anderson

Proceedings of the Iowa Academy of Science

In this paper it is the intention of the writer to enumerate only such species as have not before been reported from the above named county in any of the papers presented to this Academy. Duplications may occur but we have tried to avoid them. This list brings the total of the flowering plants reported from this one county up to about 628. Work done on other groups is not now in proper shape for presentation. Great care has been exercised in the determination of species and several species have been omitted from this list because of some doubt as …

Go to article

Program, Iowa State Normal School, Winter Term, 1903-04, Iowa State Normal School Jan 1904

Program, Iowa State Normal School, Winter Term, 1903-04, Iowa State Normal School

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 Normal School.

Go to article

Table Of Contents Jan 1904

Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Proceedings Of The Nineteenth Annual Session Of The Iowa Academy Of Sciences: Staff & Committee Reports, T. E. Savage Jan 1904

Proceedings Of The Nineteenth Annual Session Of The Iowa Academy Of Sciences: Staff & Committee Reports, T. E. Savage

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

A Method For The Determination Of Hydriodic And Hydrobromic Acids, W. S. Hendrixson Jan 1904

A Method For The Determination Of Hydriodic And Hydrobromic Acids, W. S. Hendrixson

Proceedings of the Iowa Academy of Science

About a year ago I presented to the Iowa Academy of Sciences a paper on a method of determining chloric acid by the reduction of the acid with metallic iron in the presence of dilute sulphuric acid, and the titration of the hydrochloric acid formed, by the method of Volhard. The same paper, somewhat extended, appeared in another periodical. In this communication it was suggested that the method might probably be used equally well for the determination of bromic and iodic acids, and two determinations of bromic acid were included in the paper.

Go to article

Notes On American Cladonias, Bruce Fink Jan 1904

Notes On American Cladonias, Bruce Fink

Proceedings of the Iowa Academy of Science

Since our western hemisphere surpasses the eastern in number of species and varieties of Cladonias and in forms peculiar to the hemisphere, the genus should have a special interest for the American student of lichens. Nevertheless our American descriptions have been for the most part quite inadequate and many of our determinations consequently incorrect. Cladonias are the most variable of all our higher lichens and therefore the most difficult to describe definitely. The most variable characters are those which may be studied with the eye or with a good hand lens, yet the most careful observation, the best possible descriptions, …

Go to article

Municipal Hygiene - Part I, C. O. Bates Jan 1904

Municipal Hygiene - Part I, C. O. Bates

Proceedings of the Iowa Academy of Science

Allow me to say, by way of introduction, that it is proposed to make this the first of a series of papers on this subject, and for this reason its treatment, at this time, is from a general standpoint rather than a specific.

Go to article

The Flowering Plants Of Hardin County, Morton E. Peck Jan 1904

The Flowering Plants Of Hardin County, Morton E. Peck

Proceedings of the Iowa Academy of Science

The following list of the flowering plants of Hardin County is mainly the result of three seasons of observation and collection. Only a small portion of each season, however, has been allotted to field work, and the greater part of this has been confined to the northern half of the territory, with only occasional visits to other sections; the list, therefore, is doubtless far from complete. Were it not that circumstances render it impossible, another season would be given to its preparation, and the result would be far more satisfactory.

Go to article

The Slime Moulds Of New Mexico, T. H. Macbride Jan 1904

The Slime Moulds Of New Mexico, T. H. Macbride

Proceedings of the Iowa Academy of Science

No flora of the world has lately so much occupied the attention of botanists as that which they term xerophytic, the flora of the desert. This, for several reasons. In the first place, all deserts are now more easily accessible. The rush of commercial enterprise has at last penetrated every corner of the globe; even the deserts have been exploited and the way of the naturalist is made plain as never before. In the second place, this very circumstance makes possible now the study of desert-life as a whole, a thing hitherto impossible.

Go to article

The Switchboard And Arrangement Of Storage Battery At Simpson College, John L. Tilton Jan 1904

The Switchboard And Arrangement Of Storage Battery At Simpson College, John L. Tilton

Proceedings of the Iowa Academy of Science

As it has not been possible for us to have the street current in the daytime, nor up to the present to have our own lighting plant, it has been our custom for several years to charge storage cells in the evening by means of a 110- volt street current passed through a water rheostat. This method of reducing the current was so unsatisfactory that we purchased a rotary transformer, one end of which is a motor, run by the 110-volt current, the other a 15-volt dynamo, and installed a suitable storage battery. The plan of the arrangement of battery …

Go to article

Title Page - Letter Of Transmittal, T. E. Savage Jan 1904

Title Page - Letter Of Transmittal, T. E. Savage

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Officers, Past Presidents, And Members, Iowa Academy Of Sciences Jan 1904

Officers, Past Presidents, And Members, Iowa Academy Of Sciences

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Emma Pammel Hansen, B.S, M.S., H. E. Summers Jan 1904

Emma Pammel Hansen, B.S, M.S., H. E. Summers

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Presidential Address - Botany In Its Relation To Good Citizenship, B. Shimek Jan 1904

Presidential Address - Botany In Its Relation To Good Citizenship, B. Shimek

Proceedings of the Iowa Academy of Science

There are devotees of science who are impatient at every mention of any connection between their favorite branch and the everyday affairs of men. There are those to whom purely scientific attainment is so sacred that any attempt to profane it with suggestion of profit or practical return is sacrilege. While we must admire the unselfish devotion which has prompted men to give their lives to scientific effort without hope or thought of material reward, we must also recognize the fact that the days of exclusiveness are past-that learning is no longer confined to the Cloister of the monk or …

Go to article

Cohesion Of Water And Of Alcohol, Edwin Morrison Jan 1904

Cohesion Of Water And Of Alcohol, Edwin Morrison

Proceedings of the Iowa Academy of Science

At the meeting of the Iowa Academy of Sciences in 1904 I read a paper descriptive of a new arrangement of a cohesion of water apparatus adapted to elementary laboratory work. The ease of manipulation, and close agreement of results in ordinary laboratory work led me to the thought of testing the accuracy of the standards of cohesion of water as ordinarily given in text-books and manuals. To my surprise, after a careful search through a number of the best text-books, manuals and works containing physical tables and constants, I found but one result tabulated, that of Gay-Lussac. There may …

Go to article

An Ecological Study Of The Sabine And Neches Valleys, Texas, James E. Gow Jan 1904

An Ecological Study Of The Sabine And Neches Valleys, Texas, James E. Gow

Proceedings of the Iowa Academy of Science

During the winter of 1902-3, and again during the winter of 1903-4, the writer was one of a party sent by the United States Bureau of Forestry to take stem analysis and valuation surveys on the holdings of the Kirby Lumber Company preparatory to making a working plan for the use of the company in the future treatment of its timber lands. The holdings of this company lie in Hardin, Orange, Newton, Jasper, Angelina, Sabine and San Augustine counties, and include the largest continuous area of virgin Longleaf pine existing in the United States at the present time. Incidentally to …

Go to article

J. J. Thomson's Theory Of Matter, L. Begeman Jan 1904

J. J. Thomson's Theory Of Matter, L. Begeman

Proceedings of the Iowa Academy of Science

J. J. Thomson's theory of matter is largely the outgrowth of his own experimental researches in the nature and structure of electricity. In reading the records of his work it is often hard to discriminate in just what sense he uses the term "electricity." It is certainly not well defined whether the term stands for primordial energy or matter.

Go to article

Notes On The Flora, Especially The Forest Flora, Of The Bitter Root Mountains, L. H. Pammel Jan 1904

Notes On The Flora, Especially The Forest Flora, Of The Bitter Root Mountains, L. H. Pammel

Proceedings of the Iowa Academy of Science

During the past summer a hasty survey was made of that part of the Bitter Hoot Mountains west and south of Hamilton. The range on the whole is not a lofty one, the highest peaks being about eleven thousand feet high. The mountains are fairly well timbered. There are few lakes and comparatively few meadows in the area visited.

Go to article

Methods For The Estimation Of Carbon Dioxide In Minerals And Rocks, Nicholas Knight Jan 1904

Methods For The Estimation Of Carbon Dioxide In Minerals And Rocks, Nicholas Knight

Proceedings of the Iowa Academy of Science

There seems to be two principal methods employed for the estimation of carbon dioxide in a mineral or rock; the one devised by Fresenius and the other by his rival Bunsen. The Fresenius method has been more or less modified by different analysts. In its essential features, however, it is substantially as follows: The flask K for the decomposition of the substance has a capacity of 200 to 300 c.c. The flask is closed with a two-hole rubber stopper. The safety tube a passes through one hole, and a bulb tube b through the other. A funnel is connected with …

Go to article

A Problem In Municipal Waterworks For A Small City, John L. Tilton Jan 1904

A Problem In Municipal Waterworks For A Small City, John L. Tilton

Proceedings of the Iowa Academy of Science

The problems of a municipal water supply, not only for fire protection but also for domestic use, are important ones confronting numerous towns in Iowa. The attempt to solve those problems at Indianola presents features of general as well as local value.

Go to article

Some Railroad Water Supplies, L. H. Pammel, Estelle D. Fogel Jan 1904

Some Railroad Water Supplies, L. H. Pammel, Estelle D. Fogel

Proceedings of the Iowa Academy of Science

Complaints are frequently made with reference to railroad water supplies. These complaints come from passengers as well as stockmen who are compelled to use the water for their stock.

Go to article

Flowering Plants Of Henry County, J. M. Lindly Jan 1904

Flowering Plants Of Henry County, J. M. Lindly

Proceedings of the Iowa Academy of Science

Henry County is the second from the Mississippi River on the east and the second county north of the Missouri state line on the south, thus placing it in the southeast part of the state of Iowa.

Go to article

Bisection Of Mountain Blocks In The Great Basin Region, Charles R. Keyes Jan 1904

Bisection Of Mountain Blocks In The Great Basin Region, Charles R. Keyes

Proceedings of the Iowa Academy of Science

An interesting phase of mountain structure has recently come to notice among the block ranges of the basin region of the southwest. As is well known, most of the basin ranges are long, narrow tilted blocks, arranged subparallel to one another, with intervals of twenty to forty miles of flat country between. These mountain blocks are fifty to one hundred miles in length and are tilted to heights of 3,000 to 5,000 feet.

Go to article

Geological Structure Of The Jornada Del Muerto And Adjoining Bolson Plains, Charles R. Keyes Jan 1904

Geological Structure Of The Jornada Del Muerto And Adjoining Bolson Plains, Charles R. Keyes

Proceedings of the Iowa Academy of Science

The recent visits of a number of the members of the Academy to the Tulerosa district and contiguous plains in New Mexico makes it seem worthwhile to call attention to some of the major geologic structures of the region.

Go to article

Northward Extension Of The Lake Valley Limestone, Charles R. Keyes Jan 1904

Northward Extension Of The Lake Valley Limestone, Charles R. Keyes

Proceedings of the Iowa Academy of Science

As a terranal name Lake Valley is applied to a remarkable blue limestone occurring at the famous silver mining camp of the same title, situated in Sierra County, New Mexico. The formation is noteworthy for the reason that it carries the typical Lower Burlington fauna of Iowa. On this account it is of special interest to Iowa geologists.

Go to article

First Prev Next Last