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1910 Old Gold, Iowa State Teachers College
1910 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.
The Staminate Flower Of Elodea, Robert B. Wylie
The Staminate Flower Of Elodea, Robert B. Wylie
Proceedings of the Iowa Academy of Science
Vegetatively Elodea is perhaps the best known of the submersed seed plants, as it is so commonly employed in the laboratory for experiment and study. The flowers, however, have received proportionately less study since they are small and inconspicuous and seldom appear in the usual laboratory aquaria. The purpose of this paper is to call attention to an unusual form of staminate flower recently noted.
Spore Formation In Lycogala Exiguum Morg., Henry S. Conard
Spore Formation In Lycogala Exiguum Morg., Henry S. Conard
Proceedings of the Iowa Academy of Science
On the 5th of October, 1907, young aethalia of a Lycogala were collected in a grove four miles southwest of Grinnell, Iowa, killed in chromo-acetic acid and carried through into paraffin. Sections have shown some interesting stages in the development of spores. Since this process has hitherto been described in only two species of saprophytic myxomycetes, it seemed desirable to record the observation. Whether the organism in question is Lycogala exiguum or L. epidendrum cannot be certainly determined. Its small size and the fact that only four or five aethalia were found indicate the former species.
The Influence Of Air-Currents On Transpiration, Maud A. Brown
The Influence Of Air-Currents On Transpiration, Maud A. Brown
Proceedings of the Iowa Academy of Science
This is intended merely as a brief preliminary report on experiments now under way to show the influence of air-currents on transpiration. They have arisen from a study of transpiration in general, during which the conviction has grown that one very important factor has been largely neglected. Therefore this has been made the main point of attack while side lines of investigation have been carried on in which it has been attempted to vary one factor at a time, i.e., light, temperature and humidity, and to determine if possible the relative influence of each on transpiration, and their importance as …
The Digestibility Of Bleached Flour, Elbert W. Rockwood
The Digestibility Of Bleached Flour, Elbert W. Rockwood
Proceedings of the Iowa Academy of Science
For several years the effects of the bleaching process upon the properties of wheat flour have been under discussion. The extent to which flour is used as a food material demands that in justice towards the consumers thorough tests should be made to determine whether the process is deleterious or not. In this paper no consideration will be given to any aspect of the case except that of digestibility.
The Cranial Nerves Of Siren Lacertina, H. W. Norris
The Cranial Nerves Of Siren Lacertina, H. W. Norris
Proceedings of the Iowa Academy of Science
In this preliminary account of the cranial nerves of Siren little reference will he made to the characteristic urodele features, but the descriptions will deal chiefly with those characters that have a special significance in Siren.
Necrology: Finley M. Witter, B Shimek, L. H. Pammel
Necrology: Finley M. Witter, B Shimek, L. H. Pammel
Proceedings of the Iowa Academy of Science
No abstract provided.
Proceedings Of The Twenty-Fourth Annual Session Of The Iowa Academy Of Science: Staff & Committee Reports; Program, L. S. Ross
Proceedings of the Iowa Academy of Science
No abstract provided.
Prairie Openings In The Forest, B. Shimek
Prairie Openings In The Forest, B. Shimek
Proceedings of the Iowa Academy of Science
Treeless openings in otherwise forested areas have long been known to field-workers; in this part of the Mississippi Valley. These openings are striking because of the absence of trees, but their flora differs also from the minor flora of the forest, being in fact the typical flora of the drier prairies. It matters not how remote the greater prairie areas may be or how completely these openings may be surrounded by forest, their flora is invariably of the same general prairie type.
Delayed Germination, L. H. Pammel, Charlotte M. King
Delayed Germination, L. H. Pammel, Charlotte M. King
Proceedings of the Iowa Academy of Science
In 1901 there was begun a study of the germination of weed seeds under different conditions. It was observed that a large number of the weed seeds did not germinate freely in the fall.
The Problem Of Weeds In The West, L. H. Pammel
The Problem Of Weeds In The West, L. H. Pammel
Proceedings of the Iowa Academy of Science
Weediness is an indication of poor farming. It has been said by someone that the farmers of the east do not fear the Canadian Thistle or other aggressive weeds because the better methods of tillage make the fields clean.
Preliminary List Of The Parasitic Fungi Of Fayette County, Iowa, Guy West Wilson
Preliminary List Of The Parasitic Fungi Of Fayette County, Iowa, Guy West Wilson
Proceedings of the Iowa Academy of Science
That northeastern Iowa is a rich field for the mycologist is well known to those in any degree acquainted with the work of Prof. Holway while a resident of Decorah. From this region came numerous new species and here was gathered much information concerning others already known. While from its nearness to Decorah the region about Fayette cannot offer such facilities for pioneer work as did Decorah, yet it is a most excellent base from which to study the mycological flora of this section of Iowa. Lying as it does on the borderland between the Transitional and Upper Austral zones …
Title Page - Letter Of Transmittal, L. S. Ross
Title Page - Letter Of Transmittal, L. S. Ross
Proceedings of the Iowa Academy of Science
No abstract provided.
The Effect Of Continued Grinding On Water Of Crystallization, Nicholas Knight
The Effect Of Continued Grinding On Water Of Crystallization, Nicholas Knight
Proceedings of the Iowa Academy of Science
Mauzelius (Sveriges Geol. Undersoekning Arsbok 1907); Day and Allen (Bull. U. S. Geol. Survey, 305, p. 35), Hillebrand (Journ. Am. Chem. Soc. xxx 7) and Knight (Chem. News xcvii 122) have shown the effect of fine grinding on the water and ferrous content of minerals and rocks. In this paper we are able to show the effect of continued grinding on some hydrates. The water was determined in each specimen after grinding it a half hour, an hour, an hour and a half, and two hours.
Points Regarding The Casing Of Well (4) At Grinnell, W. S. Hendrixson
Points Regarding The Casing Of Well (4) At Grinnell, W. S. Hendrixson
Proceedings of the Iowa Academy of Science
In the second paper on ''Iowa Ground Waters '' read before the Iowa Academy of Science at the annual meeting of 1909, the writer, in connection with the subject of the corrosion of well casings called attention to the fact that the city of Grinnell had contracted for a casing of cast iron for well number (4) which was then being drilled. It was suggested that a report would be made on the practicability of this enterprise at a later meeting.
Some Geological Aspects Of Artificial Drainage In Iowa, G. G. Wheat
Some Geological Aspects Of Artificial Drainage In Iowa, G. G. Wheat
Proceedings of the Iowa Academy of Science
Nature's unfinished work in the Wisconsin drift areas of Iowa has left the lands peculiarly subject to submergence in times of heavy precipitation. The magnitude of the drainage projects which would be required to carry out the incomplete work of Nature's young river systems, for a long time held back the development of drainage. Recent legislation, making possible the creation of drainage districts upon the petition of a reasonable number of land holders interested, has led to a most rapid growth in farm land drainage.
Early Historico-Botanical Records Of The Oenotheras, R. R. Gates
Early Historico-Botanical Records Of The Oenotheras, R. R. Gates
Proceedings of the Iowa Academy of Science
The present paper is an attempt to trace, as far as possible from available data, the history of the Oenotheras, particularly the large-flowered forms, in cultivation. An effort is also made to recognize, as far as this can be done, the precise characters of the various forms which have been figured or described during the last three centuries. Such records of course vary greatly in accuracy and value, for they are contemporaneous with the development of the science of botany itself. Judging from the number of polynomials applied to them by different authors, the Oenotheras would appear to have been …
Pleistocene Record Of The Simpson College Well, John L. Tilton
Pleistocene Record Of The Simpson College Well, John L. Tilton
Proceedings of the Iowa Academy of Science
In the summer of 1907 a series of four wells were sunk within a radius of fifteen feet on the campus of Simpson College, giving the best record which it has been possible to obtain in the county. This record, made as the material was removed, is here presented in detail. It serves as a typical record down to the Aftonian, beyond which the deposits described are not commonly reported within the county. The surface of the well is at 970 feet, A. T.
Distribution Of Bonanzas In The Pachuca Silver District Of Mexico, Charles R. Keyes
Distribution Of Bonanzas In The Pachuca Silver District Of Mexico, Charles R. Keyes
Proceedings of the Iowa Academy of Science
There is one feature of mining that has long been of especial interest. It is the distribution of the particularly rich ore mass or bonanza. In a recent visit to the celebrated silver mines of Pachuca, Mexico, unusual opportunity was offered me to carefully examine into some of the most instructive phases of this subject. The facts obtained throw light upon many vexed problems connected with many abandoned silver mines of our own country, still certainly containing large amounts of easily available ores.
Theory Of Meteoritic Agglomeration And The Ultimate Source Of The Ores, Charles R. Keyes
Theory Of Meteoritic Agglomeration And The Ultimate Source Of The Ores, Charles R. Keyes
Proceedings of the Iowa Academy of Science
At the present time unusual interest is taken by mining men in the subject of the origin of the deposits of the metallic ores, the extent of the world's supply, and the means of conserving them, for alarming as it may seem the end is already in sight.
The Aftonian Age Of The Aftonian Mammalian Fauna, Samuel Calvin
The Aftonian Age Of The Aftonian Mammalian Fauna, Samuel Calvin
Proceedings of the Iowa Academy of Science
The publication of the paper on the Aftonian Mammalian Fauna, in the Bulletin of the Geological Society of America, volume XX, pages 341-356, has very naturally elicited a number of questions which, however, bear chiefly on two points: First, are we certain as to the precise age of the gravels? And second, are we certain that the mammalian remains described may not be older than the Aftonian?
Some Recent Discoveries Concerning The Behavior Of Platinum-Iridium Wires, L. P. Sieg
Some Recent Discoveries Concerning The Behavior Of Platinum-Iridium Wires, L. P. Sieg
Proceedings of the Iowa Academy of Science
The remarkable elastic properties of a certain platinum-iridium wire containing 40 per cent of iridium were first announced by Guthe. In his experiments the wire was used as the suspension of a torsion pendulum. Although the amplitudes of vibration were less than 50 degrees, a marked increase both in the period and in the logarithmic decrement accompanied the increase in the amplitude. Cylinders of equal mass but of different moments of inertia were suspended from the wire, set in vibration, and timed, but as a result of these experiments no change was observed in the logarithmic decrement-amplitude curves. This absence …
Some Standardizing Tests Of Stern's Tone Variator, R. H. Sylvester
Some Standardizing Tests Of Stern's Tone Variator, R. H. Sylvester
Proceedings of the Iowa Academy of Science
The tone variator is a closed-tube sound producing instrument. It consists of a cylindrical brass bottle, the bottom of which is a piston controlled by a delicate cog-wheel mechanism. By means of this the depth of the bottle may be readily changed, thus varying the pitch. The sound is produced by a stream of air directed across the mouth of the bottle through a tube set at the proper angle. A pointer attached to the piston’s setting gear indicates the pitch in terms of vibrations per second.
Contributions To The Herpetology Of Iowa, Alexander G. Ruthven
Contributions To The Herpetology Of Iowa, Alexander G. Ruthven
Proceedings of the Iowa Academy of Science
During the summer of 1907, the University of Michigan Museum was enabled, through the generosity of Mr. Bryant Walker, to send a collector to northwestern Iowa for the purpose of investigating the fauna of that region. With the appropriation the writer engaged Mr. Max M. Peet to assist him in the work.
An Annotated Catalogue Of The Recent Mammals Of Iowa, T. Van Hyning, Frank C. Pellett
An Annotated Catalogue Of The Recent Mammals Of Iowa, T. Van Hyning, Frank C. Pellett
Proceedings of the Iowa Academy of Science
In forming a collection of the fauna of Iowa for the museum of the Historical Department of Iowa, it was early seen that there was no published lists, and but very meager and scattered records of the mammals of the state. It is this condition of affairs which has prompted the compiling of such at this time.
The Development Of The Posterior Lymph Hearts Of The Loggerhead Turtle, Frank A. Stromsten
The Development Of The Posterior Lymph Hearts Of The Loggerhead Turtle, Frank A. Stromsten
Proceedings of the Iowa Academy of Science
Recently, in a paper read before the American Society of Zoologists, central section, the writer presented some observations which indicated that the lymphatic system of turtles has an origin more or less independent of the venous system. Since then later investigations on the Chelonian lymphatics confirm and strengthen this view. Even in the development of the posterior lymph hearts, which are generally conceded to be direct derivatives from early redundant embryonic veins, we find that the process is initiated, at least, by the dilation and confluence of mesenchymal spaces.
Historical Sketch Of Early Health Regulations In Iowa, L. S. Ross
Historical Sketch Of Early Health Regulations In Iowa, L. S. Ross
Proceedings of the Iowa Academy of Science
The immediate cause for the establishment of rules and regulations to protect the health of a municipality or a state, often is the fear of the introduction of some disease that is foreign to the community. Possibly some other disease is common to a community, its effects, even its ravages are matters of common knowledge, but because of that familiarity its presence is expected; the people are accustomed to it. In reality somewhat of a fatalism with reference to it is established, and no rigorous measures are taken against it for defense or for elimination. It seems we fear the …
Courses Of Study And Program Of Recitations, 1909-1910, Iowa State Teachers College
Courses Of Study And Program Of Recitations, 1909-1910, 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.