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1917 Senior Review, Iowa State Teachers College High School
1917 Senior Review, Iowa State Teachers College High School
Malcolm Price Laboratory School Yearbooks
The student yearbook of the Teachers College High School (later the Northern University High School, part of the Malcolm Price Laboratory School of the University of Northern Iowa).
Quarterly News Letter To The Alumni, January 1, 1917, Iowa State Teachers College
Quarterly News Letter To The Alumni, January 1, 1917, Iowa State Teachers College
Quarterly News Letter to the Alumni
A quarterly publication to keep graduates of the Iowa State Teachers College informed on the happenings on campus and of fellow alumni.
Report Of The Inside Survey [Of The Iowa State Teachers College], State College Of Iowa
Report Of The Inside Survey [Of The Iowa State Teachers College], State College Of Iowa
History of Education Book Gallery
No abstract provided.
The Germination And Juvenile Forms Of Some Oaks, L. H. Pammel, C. M. King
The Germination And Juvenile Forms Of Some Oaks, L. H. Pammel, C. M. King
Proceedings of the Iowa Academy of Science
The question of how some of our oaks germinate and the fact that little has been recorded upon this subject has come to us on several occasions.
Observations On The Protozoa - With Descriptions And Drawings Of Some Probable New Species, Clementina S. Spencer
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.
Mites Affecting The Poison Oak, H. E. Ewing
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.
Plant Studies In Lyon County, Iowa, D. H. Boot
Plant Studies In Lyon County, Iowa, D. H. Boot
Proceedings of the Iowa Academy of Science
The subject of this paper is one of a series of ecological studies carried on by the author during the last few years, and is a study of a part of the region, consisting chiefly of high prairie, in the northwestern part of the state, the tract considered covering a part of the southwest corner of Lyon County, which is the northwesternmost county in Iowa.
The White Water Lily Of Clear Lake, Iowa, Henry S. Conard
The White Water Lily Of Clear Lake, Iowa, Henry S. Conard
Proceedings of the Iowa Academy of Science
Opportunity was made last summer (191) for examining the water lilies (Nymphaea) growing in the west end of Clear Lake, near Ventura, Iowa. An attempt was made to study the specific characteristics as outlined before this Academy a year ago and to seek for correlation of characters. The results are tabulated below.
The Cutinization Of Apple Skins In Relation To Their Keeping Qualities And Their Environment, Winifred Perry
The Cutinization Of Apple Skins In Relation To Their Keeping Qualities And Their Environment, Winifred Perry
Proceedings of the Iowa Academy of Science
The apples were obtained from Iowa, New York, Arkansas and Washington, so as to present different growing conditions. The following varieties were prepared by the paraffine method sectioned and drawn with the camera lucida: Jonathan from Iowa, Washington and New York; Gano from Iowa; Grimes from Arkansas, Washington and Iowa; Winesap from Iowa and Washington; Ben Davis from Arkansas and New York; Salome from Iowa and Washington; Hubbardston from New York; Black Twig and Willow Twig from Iowa; Fallawater, Twenty Ounce, Wealthy, Baldwin, Greening, Fameuse, and Maiden Blush from New York; Collins Red from Arkansas; and the Delicious from Iowa.
Waterworks Laboratories, Jack J. Hinman Jr.
Waterworks Laboratories, Jack J. Hinman Jr.
Proceedings of the Iowa Academy of Science
The material which I have put into this paper is a part of the data which I have been gathering for an article on the control of waterworks plants by laboratory methods. The audience which I am considering in the preparation of that paper is one which is interested specifically in the problems and technique of the waterworks plant. Numerical results of operation and quantity weights are naturally of greater interest to them than they are to you. Indeed, the tabulations and deductions which I have to offer to you today are of a rather special interest.
The Dissociation Of Double Salts, Harold L. Maxwell, Nicholas Knight
The Dissociation Of Double Salts, Harold L. Maxwell, Nicholas Knight
Proceedings of the Iowa Academy of Science
The purpose of this work is to study the condition of double salts in aqueous solution. Graham was the first to show that the double sulphates of the alums could be separated by diffusion. Marignac confirmed this work soon after and reached the conclusion “That double salts are found as such only at the moment of crystallization.”
Synthesis Of A Naphthotetrazine From Diethyl Succinylosuccinate And Dicyandiamide., Arthur W. Dox
Synthesis Of A Naphthotetrazine From Diethyl Succinylosuccinate And Dicyandiamide., Arthur W. Dox
Proceedings of the Iowa Academy of Science
On account of the ease with which dicyandiamide can be prepared in quantity and at very small cost from the crude calcium cyanamide of commerce, this substance is beginning to find numerous applications in organic syntheses. Among other properties, the amidine structure of dicyandiamide has been taken advantage of for the preparation of certain nitrogen heterocycles. For example, by condensation with such substances as a-ketone acid esters, various pyrimidine derivatives are obtained. Thus, dicyandiamide condenses with amlonic ester derivatives and with acetoacetic ester to form substituted pyrimidines. It is not improbable that dicyandiamide is capable of entering into the …
The Behavior Of Benzidine Toward Selenic And Telluric Acids, Arthur W. Dox
The Behavior Of Benzidine Toward Selenic And Telluric Acids, Arthur W. Dox
Proceedings of the Iowa Academy of Science
Within quite recent years, benzidine (p-diaminodiphenyl) has come into use as a precipitant for the sulfate ion. It was first applied as a quantitative reagent for the determination of sulfate by Raschig in 1903. Other investigators subsequently introduced modifications in the original method of Raschig and succeeded in obtaining very satisfactory analyses with this reagent. For example, in the analysis of water samples which contain iron salts, hydroxylamine hydrochloride is added to prevent oxidation of the benzidine. The precipitated benzidine sulfate is collected in the usual way and is either weighed direct or titrated with sodium hydroxide, using phenolphthalein as …
High-Level Terraces Of Okanogan Valley, Washington, Charles Keyes
High-Level Terraces Of Okanogan Valley, Washington, Charles Keyes
Proceedings of the Iowa Academy of Science
Recent observations in the interior of Washington State indicate in no unmistakable terms that in late geological times the entire drainage of the region has repeatedly undergone great vicissitudes. Its juvenile lines have been profoundly disturbed, displaced, and variously modified. By floods of lava on the one hand and on the other hand by advancing glaciers the original river courses have been completely lost to view. A notable and concrete illustration is the Big Bend of the Columbia River- that stretch of the great stream nearly 200 miles long lying between the mouths of the Spokane and Snake rivers.
In Memoriam: Arthur G. Smith; Bert H. Bailey, R. P. Baker, S. W. Stookey
In Memoriam: Arthur G. Smith; Bert H. Bailey, R. P. Baker, S. W. Stookey
Proceedings of the Iowa Academy of Science
No abstract provided.
Continental Perspective Of American Precambrian Stratigraphy, Charles Keyes
Continental Perspective Of American Precambrian Stratigraphy, Charles Keyes
Proceedings of the Iowa Academy of Science
To many of the delegates to the Twelfth International Geological Congress who listened to the papers and discussions on Pre-Cambrian problems and who afterwards took part in the Canadian transcontinental excursions into regions where the ancient elastics were displayed in infinite variety, the most valuable feature perhaps, was the field evidences of the amazing taxonomic possibilities which on the American continent the Pre-Cambrian sections were opening up. Few of the travelers had ever seen so deeply into the oldest stratified rocks in so short a time, under such favorable circumstances, or under happier guidance. Some of the participants in the …
Notable Mound Groups In And Near The Proposed Government Park At Mcgregor, Iowa, Ellison Orr
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.
The Iowan Glaciation And The So-Called Iowan Loess Deposits, M. M. Leighton
The Iowan Glaciation And The So-Called Iowan Loess Deposits, M. M. Leighton
Proceedings of the Iowa Academy of Science
One cannot work in the Iowan Drift area and in adjacent areas of older drift without confronting the problem of the loess. During the field seasons of 1914 and 1915 while associated with Dr. Wm. C. Alden of the U. S. Geological Survey in reviewing the field evidences for and against an Iowan stage of glaciation, the writer became interested in certain phases of the loess and their interpretations. Through the kindness of his senior colleague, the writer has the privilege of briefly discussing these phases before the Iowa Academy of Science. A more complete discussion will appear in …
Pleistocene Deposits Between Manilla In Crawford County And Coon Rapids In Carroll County, Iowa, George F. Kay
Pleistocene Deposits Between Manilla In Crawford County And Coon Rapids In Carroll County, Iowa, George F. Kay
Proceedings of the Iowa Academy of Science
The most significant features that have been revealed by a study of the Pleistocene deposits in many deep cuts made recently between Manilla in Crawford County and Coon Rapids in Carroll County, by the Chicago, Milwaukee and St. Paul Railway Company, may be summarized as follows.
Ocheyedan Mound, Osceola County, Iowa, George F. Kay
Ocheyedan Mound, Osceola County, Iowa, George F. Kay
Proceedings of the Iowa Academy of Science
Among the many interesting surface features of Iowa, there are few, if any, that have attracted more attention or have excited more wonder than Ocheyedan mound, which is thought by many persons to be the most remarkable and beautiful hill in all northwestern Iowa. It lies within a region of varied topographic features, including lakes, ponds and marshes, level prairies with fine farms, and precipitous hills, some of which are in groups with no distinctive arrangement, while others, perhaps best illustrated by Ocheyedan mound, are isolated and rise somewhat abruptly above their level surroundings.
Some Observations Of The Erosion History Of The Yangtze River, China, C. L. Foster
Some Observations Of The Erosion History Of The Yangtze River, China, C. L. Foster
Proceedings of the Iowa Academy of Science
As one crosses the China Sea from Japan to Shanghai he notes little, if any, difference in its character from that of the open sea, until within about 100 miles of the coast. Then the blue-green hue gives way to the muddy, yellow color of silt-laden water-a tangible evidence of the enormous load of sediment unceasingly born by the Yangtze to the sea. This is but the continuation of a process initiated ages ago by which the continent has crept eastward, slowly but irresistibly compelling the sea to retreat.
An Interesting Case Of Resonance In An Alternating Current Circuit, H. L. Dodge
An Interesting Case Of Resonance In An Alternating Current Circuit, H. L. Dodge
Proceedings of the Iowa Academy of Science
The phenomena of voltage and current resonance are familiar to all students of alternating currents. The former occurs in series circuits and complete resonance is secured when the condensive reactance is equal to the inductive reactance. The latter occurs in connection with parallel circuits, the necessary condition being that the sum of all the susceptances, both condensive and inductive, equals zero.
The X-Ray K-Radiation Of Tungsten, Elmer Dershem
The X-Ray K-Radiation Of Tungsten, Elmer Dershem
Proceedings of the Iowa Academy of Science
Metals of the greater atomic weights can be made to emit at least two types of characteristic X radiations, known as the J, or soft and the K or hard radiations. In a previous paper the wave lengths of the known lines in the L region of the tungsten X-ray spectrum were given. The work has since been extended to the characteristic lines of the K region.
On Certain Elastic Properties Of Drawn Tungsten Wires, L. P. Sieg
On Certain Elastic Properties Of Drawn Tungsten Wires, L. P. Sieg
Proceedings of the Iowa Academy of Science
The wires used in these experiments were furnished through the kindness of Dr. A. G. Worthing of the Nela Laboratory of the General Electric Company, of Cleveland, Ohio. There were five specimens from each of two different sets of wires. Thus each group of five wires was drawn from the same original swaging. The wires range in radius from.002397 cms. To.02584 cms. Tungsten is very hard and brittle, and can be drawn only by experts. The tungsten has previously to be made very free from impurities, and then worked and swaged into a rough wire. This is then drawn down …
The Electrical Capacity Of Similar, Non-Parallel Plane Plates, And Its Application Where The Plates Are Non-Rectangular., L. E. Dodd
Proceedings of the Iowa Academy of Science
An investigation in which it was necessary to find the distance between plane, non-parallel plates in terms of their electrical capacity raised the question of the amount of error in applying the equation for parallel plates. An equation for non-parallel plates was derived.
The Stroboscopic Effect, L. E. Dodd
The Stroboscopic Effect, L. E. Dodd
Proceedings of the Iowa Academy of Science
Consider a straight row of equally spaced white dots on a black belt running at a constant velocity v over two pulleys. Let the dot spacing be D0. Suppose that the belt is in a darkened room so that even when the belt is at rest the dots are invisible. Let the moving belt be periodically illuminated by some source of intermittent and approximately instantaneous illumination of constant frequency B.
Precontact Conduction Currents, L. E. Dodd
Precontact Conduction Currents, L. E. Dodd
Proceedings of the Iowa Academy of Science
During some work in which capacity measurements were made of plane conducting plates (silver films) in air at very short distances, the writer was able to take some incidental readings of small currents that passed between the plates when they apparently lacked several wave lengths of being in contact. Three sets of measurements were taken in one evening. Figure 1 of figure 38 shows the electrometer deflection plotted with the time. The characteristic shape of the curves suggests an exponential relation.
A List Of The Birds Observed In Clay And O'Brien Counties, Iowa, Ira N. Gabrielson
A List Of The Birds Observed In Clay And O'Brien Counties, Iowa, Ira N. Gabrielson
Proceedings of the Iowa Academy of Science
Clay and O'Brien counties lie in a section of Iowa which have received little attention from ornithologists. O’Brien is the more westerly; it is the second from the western boundary of the state, with Clay County adjoining it on the east; and each lies within one county of the Minnesota state line.
Bell's Vireo Studies (Vireo Belli Aud.), Walter W. Bennett
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.