Digital Commons Network^™

An Attempt To Illustrate Tides And Tidal Action, John L. Tilton

Proceedings of the Iowa Academy of Science

The inspiration for this paper was due to Professor W. M. Davis, who, in an article published in the Journal of School Geography, Vol. 4, No. 7, discussed the "Illustration of Tides and Waves". This led me to think that here in an inland town where there is no opportunity for the student to observe tidal effects, there is a need for class illustration that I, at least, had been neglecting. I consequently drew a plan of what it seemed to me would meet the need and employed a local tinner to construct the apparatus. The piece proves very satisfactory …

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.

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.

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.

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 …

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.

Proceedings Of The Twentieth Annual Session Of The Iowa Academy Of Sciences: Staff & Committee Reports, L. S. Ross

Proceedings of the Iowa Academy of Science

No abstract provided.

Relation Of The Motor Nerve Endings To Voluntary Muscle In The Frog, B. A. Place

Proceedings of the Iowa Academy of Science

This is a subject upon which most authorities differ widely, and few, if any, agree upon all points entirely. It is therefore, an inviting field tor research. Because of the extreme diversity of opinions current it has seemed best to me to formulate them in a brief way before giving the results of my own observations.

More Light On The Origin Of The Missouri River Loess, J. E. Todd

Proceedings of the Iowa Academy of Science

My excuse for offering another paper on this well-worn subject is my recently acquired familiarity with a deposit of Lake Dakota, which closely resembles loess, in structure and composition, and in its relations to underlying till and to recent channels. In short it seems to be a more recent and less extensive formation of the same sort. The resemblances are so striking and its fluvio-lacustrine origin so unquestioned that a similar origin for the loess of the Missouri is strongly suggested.

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

Proceedings of the Iowa Academy of Science

No abstract provided.

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.

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 …

Seventh Annual Session Of The Summer Term, 1903, 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.

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

Proceedings of the Iowa Academy of Science

The following is a list of the chemical periodicals in the State of Iowa, with the extent of the files and the names of the libraries in which they may be found. The list is prepared and published for the information of chemists who may have occasion to refer to such periodicals in their work. So far as known the books of any file may be used for reference purposes in the libraries which contain them and under certain restrictions, in some cases, they may be taken out for purposes of reference. In some cases the books are in the …

The Preparation Of Ammonia Free Water For Water Analysis, J. B. Weems, C. E. Gray, E. C. Myers

Proceedings of the Iowa Academy of Science

The preparation of water which will not give the yellow coloration with Nessler's reagent is an important problem in the analysis of water. Where the laboratory water supply contains a small quantity of ammonia, suitable water for use in water analysis can no doubt be obtained by ordinary distillation and collecting that part of the distillate which is free from ammonia. The water supply of many laboratories will not permit of this ready method of preparing ammonia free water. The distilled water must be redistilled with sulphuric acid and potassium permanganate to obtain a satisfactory water which will remain colorless …

The Solar Surface During The Past Twelve Years - A Review Of Sun-Spot Observations Made At Alta, Iowa, From 1890 To 1902, David E. Hadden

Proceedings of the Iowa Academy of Science

The following paper is a resume of a series of sun-spot observations commenced by the writer in 1890, August 1st, and continued without interruption, except by cloudy weather and other unavoidable causes —such as sickness or absence from the city— until the present time.

The Preparation Of Phenyl Ether, Alfred N. Cook

Proceedings of the Iowa Academy of Science

While ethyl ether, the common ether of the modern drug store, has been known for three and a half centuries, and has been used as an anesthetic for over fifty years, phenyl ether is of more recent origin. It has never been put upon the market and has never been put to any so-called "practical use." Improved methods of preparation, however, may bring it within reach of the physiological chemist or the manufacturer, so that this substance or some of its immediate derivatives may, 'ere long, play an important part in the economy of men.

Menke's Method Of Preparing Hyponitrites, Alfred N. Cook

Proceedings of the Iowa Academy of Science

Hyponitrites were first prepared in 1871 by Edward Divers by reducing an alkaline nitrate in water solution by means of sodium amalgam. About seven years later A. E. Menke, of Kings College, London, obtained a compound by heating cast iron filings with sodium nitrate which Professor Bloxam suggested to be the compound discovered by Dr. Divers. An analysis of the sodium determined as sodium sulphate and an analysis of the nitrogen determined as ammonia yielded the theoretical amounts of these elements, all within the limits of experimental error. On drying at 100° C. it lost in weight corresponding to three …

Ustilaginae Of Iowa, H. H. Hume

Proceedings of the Iowa Academy of Science

Mycelium located in the tissues of the host, annual or perennial, spores produced from the mycelium at definite points on lines, stems or flowers, gelatinous at first, later pulverulent, in one species a hard, dark mass, smooth, echinulate or reticulated.

Some New Double Bromides And Their Dissociation In Aqueous Solution, Nicholas Knight

Proceedings of the Iowa Academy of Science

The purpose of this investigation is to study the condition of double bromides in the presence of varying amounts of water. The substances herein described are well defined compounds, having a composition as definite and a crystalline form as characteristic as any group of chemical substances.

The Vascular Cryptogams Of Iowa And The Adjoining Parts Of Southeastern Minnesota And Western Wisconsin, L. H. Pammel, Charlotte M. King

Proceedings of the Iowa Academy of Science

During the past year an excellent paper on Iowa Pteridophyta, by Prof. Shimek, has appeared. This paper gives the distribution of the Iowa Pteridophytes as they are represented in the Herbarium of the State University of Iowa. The ferns as represented in our collection somewhat extend the limits and give additional localities of others. It is highly desirable that precise localities of our ferns be given, as it is a group of plants but sparsely represented in our Iowa flora. With few exceptions they are found only in favored localities.

Documentary Material Relating To The History Of Iowa [V.3], Benjamin F. Shambaugh

Iowa Book Gallery

Volume 3 in a 3-volume set, published between 1897 and 1901 by the State Historical Society of Iowa, covers a variety of historical subjects including the acquisition and establishment of the Territory of Iowa, the admission of Iowa into the Union, and the history of local political organization within Iowa. The General Introduction in volume one states, "Scattered through various books and publications... this material has been practically inaccessible to the general body of students. It is to obviate these difficulties, and to facilitate the adoption of scientific methods of study, that the documentary material contemplated in the title is …

Presidential Address - The Relation Of Physics To The Other Material Sciences, A. A. Veblen

Proceedings of the Iowa Academy of Science

The last year or two of the nineteenth century and this first year of the twentieth have been prolific in literature dealing in one way or another with science topics. There have been addresses before learned and educational gatherings, articles in science journals, and in periodicals of well-nigh all kinds, much of all this writing having been produced by the masters and leaders of science; and the object of these productions has been, generally, to give a view of the present condition and importance of scientific work and knowledge, or to review recent progress either of science in general or …

Some Recent Analyses Of Iowa Building Stones; Also Of Potable Water, Nicholas Knight

Proceedings of the Iowa Academy of Science

The rocks herein described were analyzed in the chemical laboratory of Cornell College, under the direction of Dr. N. Knight. The composition of the rocks varies from nearly typical dolomite to admixtures in different proportions of calcium carbonate and dolomite.

Notes On The Bacteriological Analysis Of Water, L. H. Pammel

Proceedings of the Iowa Academy of Science

The recent epidemic of typhoid fever at the college is of interest to us and especially the methods now in vogue with reference to the examination of water for various organisms. During the recent epidemic and previously the well waters in the vicinity of Ames as well as the college water supply were examined at various times. An examination has also been made of water coming from wells of the parties who have furnished milk to the college. It should be stated here that this report is not completed owing to the fact that some of the species have not …

Diphenyl Ether Derivatives, Alfred N. Cook

Proceedings of the Iowa Academy of Science

(1) Historical Introduction.

(2) Preparation of a Nitro-Methyl Derivative.

(3) Oxidation of the Methyl Group to an Acid and the Preparation of Some of the Salts of the Acid.

(4) Reduction of the Nitro Group to Form a Base and the Formation of the Platinum Salt.

(5) Bibliography.

Some Cercosporae Of Macon Co., Alabama, George W. Carver

Proceedings of the Iowa Academy of Science

The wide distribution and the economic importance of the Cercospora in this county has prompted the writing of this paper. This list by no means represents all of the species of this county, as no special effort has been made to collect Cercospora only. These collections were made while passing hurriedly to and from other duties. With few exceptions, the species were collected in the immediate vicinity of Tuskeegee.

Memorial Day 1899, Iowa. Dept. Of Public Instruction

History of Education Book Gallery

A booklet for Iowa teachers giving suggested readings and other items for a Memorial Day school program.

Formational Synonomy Of The Coal Measures Of The Western Interior Basin, Charles R. Keyes

Proceedings of the Iowa Academy of Science

Of late years the Carboniferous terranes, or formations of the Mississippi basin west of the great river have been widely studied. They are now capable of being classified in detail. For a long time much confusion existed in regard to the relations that the schemes of various investigators, and especially those of the pioneers, bore to one another, and to the more modern widely correlated arrangement. The adjustment of the results of all workers, extending over a period of fifty years, in a field embracing the greater part of six states, was fraught with many difficulties.

Klebs-Leoffler Bacillus, Gershom H. Hill

Proceedings of the Iowa Academy of Science

This is a scientific age. The use of scientific methods in the vocation by which a man gains a livelihood makes it both interesting and profitable. The scientific man realizes the necessity of telling the truth, the whole truth and nothing but the truth. Scientific work makes a man careful, accurate and a close observer. The scientific American is somewhat different from the scientific German. The former places a high cash value on his time; he is intensely utilitarian. The geologist is expected to furnish the cities with clay and coal to make brick for paving and for other purposes. …