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Quarterly News Letter To The Alumni, April 1, 1916, Iowa State Teachers College
Quarterly News Letter To The Alumni, April 1, 1916, 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.
Winter Term Commencement [Program], March 14, 1916, Iowa State Teachers College
Winter Term Commencement [Program], March 14, 1916, Iowa State Teachers College
UNI Commencement Programs
The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.
Summer Term, Twentieth Annual Session, 1916, Iowa State Teachers College
Summer Term, Twentieth Annual Session, 1916, 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.
In Memoriam: G. E. Patrick; Harriette Kellogg, L. H. Pammel
In Memoriam: G. E. Patrick; Harriette Kellogg, L. H. Pammel
Proceedings of the Iowa Academy of Science
No abstract provided.
Notes On Some Pileate Hydnaceae From Iowa, Guy West Wilson
Notes On Some Pileate Hydnaceae From Iowa, Guy West Wilson
Proceedings of the Iowa Academy of Science
The Hydnaceae, or spine fungi, is one of the smaller families of the Agaricales, or, as they were known to the older mycologists, the Hymenomycetes, numbering as it does only about five hundred species. Of these some are widely dispersed and rather common while others are quite sporadic or even local in their occurrence. Only a few members of the family are common in our state, yet their number is more considerable than the published accounts would indicate, as but four species appear to have been recorded from Iowa.
Some Notes On California Forest Flora, L. H. Pammel
Some Notes On California Forest Flora, L. H. Pammel
Proceedings of the Iowa Academy of Science
Not much that is new can be presented on the forest flora of the state of California. The interesting forest flora of California has been worked over most carefully by a large number of eminent botanists; of the later contributions we may mention a few of the more recent: namely, the work of Willis Linn Jepson, "The Trees of California" and by the same author "The Silva of California," published in 1914, which is the most complete and exhaustive treatise on trees of any given local region; the work of Sudworth, "Forest Trees of the Pacific Slope;" the work of …
A Comparison Of Barbituric Acid, Thiobarbituric Acid And Malonylguanidine As Quantitative Precipitants For Furfural, Arthur W. Dox, G. P. Plaisance
A Comparison Of Barbituric Acid, Thiobarbituric Acid And Malonylguanidine As Quantitative Precipitants For Furfural, Arthur W. Dox, G. P. Plaisance
Proceedings of the Iowa Academy of Science
All of the methods for the quantitative determination of pentoses and pentosans in agricultural products are based upon the conversion of pentose into furfural by distillation with a mineral acid, preferably hydrochloric, and subsequent estimation of furfural in the distillate by means of a suitable reagent. Günther, Chalmot and Tollens titrated the furfural with phenylhydrazine, using aniline acetate paper as an indicator. Stone made use of the same reaction, but used Fehling's solution to determine the excess of phenylhydrazine. Later, Flint and Tollens showed that this titration method was not accurate, on account of the levulinic acid resulting from the …
A Physical Representation Of The Summation Of Certain Types Of Series, L. P. Sieg
A Physical Representation Of The Summation Of Certain Types Of Series, L. P. Sieg
Proceedings of the Iowa Academy of Science
Most of us are on the lookout for concrete illustrations of abstract ideas. To be able to visualize a mathematical process is to many of us a step toward the better understanding of that process. The following brief discussion, although having no pretentious to absolute originality, is offered as a physical illustration of the summation of certain simple geometric series.
Records Of Oscillations In Lake Level And Records Of Lake Temperature, And Of Meteorology, Secured At The Macbride Lakeside Laboratory, Lake Okoboji, Iowa, July, 1915, John L. Tilton
Proceedings of the Iowa Academy of Science
At the Macbride Lakeside Laboratory, Milford, Iowa, the writer began a series of observations last summer (1915) for his own information to ascertain what the fluctuations were in the level of the lake, and to determine the relative value of the causes that operated to produce those fluctuations. It soon became evident that the records sought were desired also by teachers in other departments because of the bearing of such data on life zones and conditions in the lake. Since then the government has called for all data available on evaporation in Iowa. The data are therefore here presented that …
The Loess Of Crowley's Ridge, Arkansas, B. Shimek
The Loess Of Crowley's Ridge, Arkansas, B. Shimek
Proceedings of the Iowa Academy of Science
Crowley's Ridge is a narrow, more or less interrupted elevation which extends from southeastern Missouri to Helena, Arkansas. Its slopes, especially on the eastern side, are frequently quite abrupt (see Plate V, figure 1), and it forms a striking topographic feature of this part of the Mississippi valley.
A Curve Of Moisture Condensation On Glass Wool, L. E. Dodd
A Curve Of Moisture Condensation On Glass Wool, L. E. Dodd
Proceedings of the Iowa Academy of Science
Experimental results of Professor F. T. Trouton relating to equilibrium vapor pressure and total mass of water vapor fed to glass wool that had previously been thoroughly dried, showed an interesting drop in the curve at about half saturation pressure. The character of the curve appeared to afford grounds for a theory, proposed by Trouton, which supposed the condensation to have taken place in two modes, or states, which he called the alpha and the beta states. After thorough drying, employing the three agencies of continued vacuum, phosphorus pentoxide, and a temperature of about 160°, moisture in the alpha state …
A Method Of Preparing Studies Of Trichinella Spiralis Owen, T. T. Job, Dayton Stoner
A Method Of Preparing Studies Of Trichinella Spiralis Owen, T. T. Job, Dayton Stoner
Proceedings of the Iowa Academy of Science
This work was first attempted with the idea in mind of securing an adequate supply of laboratory material of Trichinella spiralis for classes in invertebrate Zoology at the State University of Iowa.
Insect Pollination Of Timberline Flowers In Colorado, L. A. Kenoyer
Insect Pollination Of Timberline Flowers In Colorado, L. A. Kenoyer
Proceedings of the Iowa Academy of Science
Nägeli attributes the fact that alpine flowers are more showy that those of the lowlands to the greater scarcity of insects on the mountain tops and the greater efforts thereby necessary on the part of flowers to secure their visits.
Insect Pollination Of Frasera Stenosepala, L. A. Kenoyer
Insect Pollination Of Frasera Stenosepala, L. A. Kenoyer
Proceedings of the Iowa Academy of Science
One of the largest of herbaceous plants growing at Tolland, Colorado, 9,000 feet above sea level, is the green gentian, Frasera stenosepala. A rosette of basal leaves gives rise to a coarse stalk, three to four feet high, with whorls of large leaves and a leafy panicle of rather large flowers of a light green color. Singularly the color is about as inconspicuous as can be imagined. The flowers are rendered rather noticeable by the size and isolation of the plants, but much less so by color. Yet it appeared to surpass all other flowers of the region in …
1916 Old Gold, Iowa State Teachers College
1916 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.
Life History And Habits Of Polistes Metricus Say, Frank C. Pellett
Life History And Habits Of Polistes Metricus Say, Frank C. Pellett
Proceedings of the Iowa Academy of Science
The summer of 1915 was not a favorable season in which to study life histories of such insects as the Gold Banded Paper-Maker. The weather was too cool and there was so much rain that results were anything but satisfactory. It is very probable that in a season of normal temperature the time required in the various stages of development would be somewhat shorter than was the case in 1915. However, since I have spent considerable time in observing these insects during the past summer, I am hopeful that these notes may be of interest. Two years before, a similar …
The Behavior Of Solutions At The Critical Temperatures - A Preliminary Report, Perry A. Bond
The Behavior Of Solutions At The Critical Temperatures - A Preliminary Report, Perry A. Bond
Proceedings of the Iowa Academy of Science
The writer has felt that at or about the critical temperature of solutions, there might be found phenomena which would throw light on the mechanism of the formation of solution. The question of whether the solvent is chemically combined with the solute, whether in all or only in special cases, is the final object of the research.
Terranal Affinities Of Original Chouteau Limestone, Charles Keyes
Terranal Affinities Of Original Chouteau Limestone, Charles Keyes
Proceedings of the Iowa Academy of Science
In all the Mississippi valley there is no geologic formation that is so misunderstood, or so illy considered as regards its stratigraphic relations, as the massive, buff limestone terrane immediately underlying the Burlington limestone of Missouri and Iowa. Originally noticed by Prof. G. C. Swallow, in 1855, as a thick, homogeneous lithologic unit typically developed in central Missouri along the northern flanks of the Ozark dome, and extended into other parts of the state as the uppermost member of a tripartite "Chemung" group, little mention is later made of it.
A Modern School, Abraham Flexner
A Modern School, Abraham Flexner
History of Education Book Gallery
A Modern School is a 23-page occasional paper, written by Abraham Flexner and published in 1916 by The General Education Board. Flexner (1866-1959) was an American educator and education reformer. The occasional paper presented here addresses many of the perceived failings of the public school system circa 1916 and suggests several reforms. The General Education Board was established by John D. Rockefeller in 1903. According to the Rockefeller Foundation, the board was established to aid education in the U.S. without distinction of race, sex or creed, and was active in promoting the public school movement in the early part of …
Pure Sodium Chloride, Nicholas Knight
Pure Sodium Chloride, Nicholas Knight
Proceedings of the Iowa Academy of Science
It is often convenient and necessary to have on hand a supply of pure sodium chloride for the preparation of standard solutions. It is quite easy to obtain the substance with a "C. P." label, but it does not always follow that the article is as pure as the label may indicate.
Coast Range Cirques Of The Skeena Basin, Charles Keyes
Coast Range Cirques Of The Skeena Basin, Charles Keyes
Proceedings of the Iowa Academy of Science
In British Columbia the manifold aspects of alpine glaciation are displayed as they are perhaps nowhere else on the face of the globe. Northward as they approach the southern tip of Alaska the lofty Cascade ranges of the United States pass into coast-ranges; and the coast ranges of the south run into the sea, giving rise to the countless islands which are so characteristic of this part of the Pacific coast.
A New Stratigraphic Horizon In The Cambrian System Of Wisconsin, W. D. Shipton
A New Stratigraphic Horizon In The Cambrian System Of Wisconsin, W. D. Shipton
Proceedings of the Iowa Academy of Science
During the summer of 1915 it was the privilege of the writer to work on the geology of the Sparta quadrangle, Wisconsin. In connection with that work a new stratigraphic horizon in the Cambrian was recognized.
An Electrical Device For Securing And Maintaining Constant High Temperatures, W. E. Tisdale
An Electrical Device For Securing And Maintaining Constant High Temperatures, W. E. Tisdale
Proceedings of the Iowa Academy of Science
In a paper read before this Academy last year, a device for controlling comparatively high temperatures (up to about 600" C) was explained, together with the necessary auxiliary apparatus, an ordinary electro-magnet circuit breaker, and the source of constant potential necessary to operate this magnet. The oven described in that paper consisted of a properly insulated porcelain tube 30 cm. long and 5 cm. in diameter. It required 10 amperes to heat it to 450° C. The dimensions of the oven limited the size of the tubes in which the crystals were to be produced to not more than 3 …
A New Method Of Identifying Polarized Light Reflected From Small Opaque Crystals., Leroy D. Weld
A New Method Of Identifying Polarized Light Reflected From Small Opaque Crystals., Leroy D. Weld
Proceedings of the Iowa Academy of Science
The method is a modification of one used originally by Voigt for the identification of elliptically polarized light. The light under examination passes first through an arrangement of quartz wedges acting as a Babinet compensator, then through a "rotator" consisting of another pair of quartz wedges cut perpendicular to the axis, one from right-handed, the other from left-handed quartz; and finally through a large Nicol prism. The result is that the field is filled with rows of black spots in regular arrangement; and from the location of these spots with reference to the cross-hairs, as photographed, the exact character of …
A New Tonoscope, L. E. Dodd
A New Tonoscope, L. E. Dodd
Proceedings of the Iowa Academy of Science
While undergoing a series of voice pitch tests some three years ago in the Psychological Laboratory of the State University of Iowa, the author learned that in his own individual case, as in some others, there existed, according to the statement of the investigator, Mr. C. J. Knock, a consistent as well as persistent tendency to miss in a definite direction certain intervals of the musical scale. The instrument used in these tests was the Seashore tonoscope, an indicator of absolute pitch developed in some of its later stages at this University.
Certain Elastic Properties Of Phosphor-Bronze Wires, A. J. Oehler
Certain Elastic Properties Of Phosphor-Bronze Wires, A. J. Oehler
Proceedings of the Iowa Academy of Science
The work by Guthe, Guthe and Sieg, and Sieg, on platinumiridium wires when used as suspensions for torsion pendulums, showed some remarkable elastic properties of that alloy. The principal one of these was the variation of the period with the amplitude of vibration. It was these studies that made it seem very desirable to test other alloys commonly used for suspensions, by a similar method.
The White Admiral Or Banded Purple Butterfly In Iowa, B. O. Wolden
The White Admiral Or Banded Purple Butterfly In Iowa, B. O. Wolden
Proceedings of the Iowa Academy of Science
During the early part of the summer of 1914 a butterfly was observed around the writer's home, which was identified at the time as Basilarchia arthemis. As there seems to be no previous record of this butterfly having been collected in Iowa a brief note, recording the fact, might not be out of place and might be of interest to students of the Lepidoptera of Iowa.
A Section Of Upper Sonoran Flora In Northern Oregon, Morton E. Peck
A Section Of Upper Sonoran Flora In Northern Oregon, Morton E. Peck
Proceedings of the Iowa Academy of Science
From July 4 to July 16, 1915, the writer was stationed at Umatilla, Oregon, as special field agent of the United States Biological Survey. A part of the work assigned was the gathering of data in regard to the general character of the vegetation and the listing of the species identified. Most of the facts here given were embodied in a somewhat briefer form in the official report.