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Some Loessoid Deposits Of Central Iowa, L. A. Thomas, K. A. Riggs Jr., R. N. Tench

Proceedings of the Iowa Academy of Science

During the course of an investigation of the bedrock geology of western Story County, Iowa, our attention was directed to the occurrence of some unusual Pleistocene deposits. These deposits consist of calcareous silts, which from the viewpoint of mineralogy, textural analysis, physiographic expression, and paleontology embrace most of the criteria by which loess is generally described or recognized. These deposits in Story County have been described as loess by Beyer (1898, and 1899). The most apparent but unusual feature of these deposits is their vertical and lateral gradation into till or alluvial material. Similar deposits are now known to occur …

One More Brevity, Robert Frost

James Hearst Documents

The poem One more brevity by Robert Frost sent as a Christmas greeting in 1953. Decorations by Philip Grushkin.

Iowa State Teachers 1953 Football Dopebook, Iowa State Teachers College

Athletics Media Guides

Contents:

--Thumbnail of Iowa Teachers Football for 1953 --1
--Sketch of Coach Clyde L. (Buck) Starbeck --2-3
--Coaching record of Buck Starbeck at Iowa Teachers --4
--Sketches of Other Coaching Staff Members --5
--1953 Letterman Picture at Iowa Teachers --6
--1953 Prospects at Iowa Teachers --7-8
--Iowa Teachers 1953 Roster --9
--Sketches of Iowa Teachers 1953 Players --10-13
--Record of Iowa Teachers' Series with 1953 Foes --14
--Schedules, Results and Prospects of 1953 Foes --15-19
--O. R. Latham Stadium, Stadiums of 1953 Opponents --19
--1952 ISTC Final Team Statistics --20 1952
--ISTC Final Individual Statistics --21
--1952 North Central Conference …

Additions To And Notes On The Flora Of Dickinson County, Iowa, Martin L. Grant

Proceedings of the Iowa Academy of Science

Dickinson County, Iowa, is one of the northern counties bordering on Minnesota, the third one east from the northwestern corner of the state. Botanically, it is best known for its prairie flora and aquatic habitats. Since the "Dickinson County Flora" (Grant, 1951) was published, there has been opportunity to do further field work there during the summer of 1952, and to examine specimens in the herbaria of Iowa State College (here cited as ISC), the State University of Iowa (SUI), Iowa State Teachers College (ISTC), and the Iowa Lakeside Laboratory on Lake Okoboji in Dickinson Co. (ILL). The writer's specimens …

Plant Communities Of The Apple River Canyon, Wisconsin, Norman H. Russell

Proceedings of the Iowa Academy of Science

One of the most attractive scenic features to be found in the vicinity of Minneapolis, Minnesota, is the steep, narrow gorge of Apple River. This gorge or "canyon" extends for a mile in an almost exact east-west direction and is located about one mile east of the junction of Apple River with the St. Croix River. The two rivers join about eight miles north of Stillwater, Minnesota, in St. Croix Co., Wisconsin. Apple River, though at present a small shallow stream, must have been much larger in the past, for it occupies, in its lower reaches, a canyon perhaps two …

The Cattell 16 P.F. Test As A Prognosticator Of Accident Susceptibility, Virtus W. Suhr

Proceedings of the Iowa Academy of Science

As early as 1935, Marbe (5) wrote that it seemed obvious there were certain human deficiencies, such as the range of attention, clumsiness, and absentmindedness which predisposed to accidents and expressed the opinion that to some extent the deficiencies making for accident proneness could be detected by tests, and persons suffering from them could be given special training or excluded in advance from dangerous trades. Lauer (4) in 193 7 observed that the ultimate method of evaluating driving ability will probably be that of identifying patterns of response which may prognosticate accident susceptibility. In 1949 Tillman and Hobbs (6) found …

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

Proceedings of the Iowa Academy of Science

No abstract provided.

Proceedings Of The Sixty-Fifth Meeting Of The Iowa Academy Of Science Held At Cornell College, Mt. Vernon, Iowa, April 17 And 18, 1953: Minutes Of The 1953 Meeting

Proceedings of the Iowa Academy of Science

No abstract provided.

The Senecioneae, Cynareae, And Cichorieae Of Iowa, Robert Austin Davidson

Proceedings of the Iowa Academy of Science

The tribes SENECIONEAE, CYNAREAE, and CICHORIEAE of the family Compositae were studied for several reasons. First, no treatment of any of these taxa exists for Iowa. Secondly, the species involved are of considerable interest in that they are morphologically quite complex and present a certain challenge to those dealing with their taxonomy. Some species are of interest in that they are widely distributed throughout the state and form a conspicuous floral element. Other species are extremely rare and nearly unknown from this area. This paper is a condensation of work presented in a thesis by the author (1). The keys …

Severity Of Corn Seedling Disease In Iowa Soils, A. L. Hooker

Proceedings of the Iowa Academy of Science

Poor seedling stands and root injury often occur when corn is planted in cold soils. Corn stands are reduced largely as a consequence of soil inhabiting fungi invading the germinating kernel resulting in the death of the young seedling before emergence. This group of fungi, largely Pythium species, may also incite a rotting of the seedling root system. This investigation concerns itself with measuring the severity of this corn seedling disease under certain greenhouse conditions m various Iowa soils of different types and cropping sequences.

A Preliminary Report On The Marsh And Aquatic Dicotyledonous Flora Of Iowa, Paul H. Monson

Proceedings of the Iowa Academy of Science

As a part of the plan to complete a survey of the flora of Iowa, a study of the distribution of marsh and aquatic dicotyledonous phanerogams of the state was undertaken in the fall of 1950. This study, based on the collection in the herbaria of Iowa State College and the State University of Iowa in addition to the limited field experience of the author, included 103 species and varieties of plants representing 60 genera of 25 families. The Scrophulariaceae account for 14 species in 8 genera, Ranunculus is represented by 8 species, Polygonum by 7. Without attempting to show …

Respiratory Quotients Of Intact Egg, Isolated Embryo And Embryo Homogenate, Joseph Hall Bodine, William Lionel West

Proceedings of the Iowa Academy of Science

The problem of the nature and type of chemical compounds utilized during the embryonic development of an organism has been studied for many biological forms and considerable data exist concerning the basic details of such phenomena (Needham, 1942; Spratt, 1952; Cleland and Rothschild, 1952). The terrestrial, cleidoic or "closed system" egg seems to be rather favorable material for study of this problem since the exchanges of materials from the outside to the inside of the egg and vice versa appear to be at a minimum. The egg of the grasshopper, Melanoplus differentialis, is unusually favorable material for investigating the …

Species Of Trees Used As Roost Places By Bronzed Grackles And Avian Associates At Ames, Iowa, John C. W. Bliese

Proceedings of the Iowa Academy of Science

For a number of years, during the summer and fall months, thousands of bronzed grackles and many starlings, cowbirds, and robins have come daily to roost in Ames, Iowa, and then left for the surrounding countryside again in the morning. Roosting has always been in the shade trees of residential areas, but apparently the trees have not been used indiscriminately. Direct observation by the writer since 1949, and comments from local citizens for conditions prior to that time, have indicated that certain trees served as roost places night after night, whereas nearby trees were not used at all.

Four Species New To The Iowa Herpetofauna With Notes On Their Natural Histories, Reeve M. Bailey

Proceedings of the Iowa Academy of Science

In a survey of the amphibians and reptiles of Iowa a number of species have been collected for which there are apparently no state records. . The localities here reported constitute extensions of the known geographic ranges of these species. None has a statewide distribution, but each of the three amphibians occupies a considerable area. The available data are believed adequate to permit relatively accurate delimitation of the ranges in Iowa. Original information on the life histories of these species is included.

1953 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.

A Study Of The Separation Of Pigments Of Euglena 9 By Chromatographic Adsorption Techniques And A Determination Of Their Absorption Spectra, Ruth W. Helmick

Proceedings of the Iowa Academy of Science

The flagellate protozoans, Euglena have been observed to exhibit different pigments but few comparative studies have been made concerning them. If there is a difference in the pigments of the various species of Euglena, a method of separation of these pigments or identification would be of interest and value to those working in the fields of physiology and taxonomy. The purpose of the present study is to determine the absorptive spectra of various pigments, isolated by chromatographic adsorption techniques from bacteria-free cultures of Euglena 9. The original culture was obtained from Dr. Luigi Provasoli of Haskins Laboratories, New York, New …

Late Pleistocene Material From The Des Moines Area, Harris Palmer

Proceedings of the Iowa Academy of Science

The finds described in this preliminary report represent skeletal material brought to the surface during dredging operations carried on at the West Des Moines plant of the Concrete Materials Company.¹ The gravel pit is located in the SE Y4 of Sec. 15, T. 78 N., R. 25 W. on the floodplain of the Raccoon River, about five air miles above its confluence with the Des Moines. The valley wall on the north side of the Raccoon in this locality marks the maximum advance of Cary ice. The area south of the river is underlain by Kansan drift. The nature …

A Note On The Increase In Flake Size Of Aphanizomenon Flos-Aquae (L) Ralfs, John D. Dodd

Proceedings of the Iowa Academy of Science

Aphanizomenon flos-aquae is a blue green alga which forms a conspicuous part of the algal bloom in many of Iowa's lakes. It is associated with species of Anabaena and Microcystis; these three genera being widely known as "Fanny, Anny and Mike". The compound colonies of Aphanizomenon, which consist of hundreds of laterally coherent filaments lying in approximately one plane, have the macroscopic appearance of lawn grass clippings floating in the water. Although this organism is well known and has been well described, a somewhat spectacular aspect of its growth and reproduction is not touched upon in discussions which …

Relative Pathogenicity Of Pythium Species Attacking Seedling Com, A. L. Hooker

Proceedings of the Iowa Academy of Science

Several species of Pythium have been isolated and identified as inciting a root rot and blight of seedling corn. In view of the overall importance of this group of fungi, a comparative study of the relative pathogenicity of a selected number of Pythium species is justified.

A Preliminary Report On The Flora Of Southwestern Iowa, Marcus J. Fay

Proceedings of the Iowa Academy of Science

A survey of the vascular plants of southwestern Iowa was made by the writer in order to obtain more adequate data on the flora of that region. The area considered in this investigation consists of approximately five thousand square miles in the extreme southwestern corner of the state, most of which lies in the drainage basin of the Missouri River. (See Fig. 1) Sixteen counties comprise the primary sphere of study, extending four tiers of counties east from the Missouri River, and four tiers of counties north of the Iowa-Missouri state line. The sixteen counties, listed in alphabetical order, are …

The Equilibrium Vapor Pressures Of Some Carbon Disulfide Solutions, Robert H. Reed, James O. Osburn

Proceedings of the Iowa Academy of Science

The problem of recovering carbon disulfide from a mixture of air and carbon disulfide is encountered in the manufacture of viscose rayon. The completeness of the removal must be high, both because of the expense of the material and also from the standpoint of health and safety. One method for the removal of carbon disulfide from air is that of absorption in a suitable liquid. This method was studied, and one part of this study, the choice of solvents and measurement of equilibrium vapor pressures, is reported here.

Evaluation Of Proportions And Size Of Certain Moving Signs, Owen A. Brooks

Proceedings of the Iowa Academy of Science

The "golden section" has generally been accepted as the most preferred height-to-width ratio that can be obtained in a rectangle. Little is known of the origin of this acceptance. There has been a limited amount of experimental work done to either uphold or refute the position held. Rendahl (2) failed to confirm the acceptance of the "golden section" by most of her subjects. On the other hand, both Shipley (3) and Thompson (4) have upheld the acceptance. Most former studies dealing with preference of proportions have been concerned with stationary signs. The present investigation has to do with moving signs. …

Buffer Capacity And Ph Of Press Sap In Relation To Dioecism Of Phanerogams, Mary Claire Hoxmeier

Proceedings of the Iowa Academy of Science

Numerous experiments have been performed in the endeavor to identify the factors which underlie the sexual dimorphism in dioecious species of flowering plants (2, 7, 8, 9, 11). The discovery in 1920 (5) that the photoperiod has a fundamental relationship to inception of reproductive processes has given renewed impetus to studies of sex expression in dioecious species of plants in the belief that it also may be conditioned by a similarly specific stimulus. Studies of physico-chemical attributes such as respiration, tissue fluid reaction, and the role of specific cell components have disclosed certain functional processes which are correlated with six …

Properties Of Two Profiles Of The Hayden Series, A. J. Green, F. F. Riecken

Proceedings of the Iowa Academy of Science

The soils formed under forest vegetation from Late Wisconsin glacial till in Northcentral Iowa were classified, according to the summary by Brown (1936), chiefly with the Conover series. In the soil survey of Story County, similar soils were classified with the Ames and Lindley series according to Meldrum, Perfect, and Mogen (1941). The Ames series is a Planosol formed under forest vegetation and occurs on nearly level to slightly level areas. As the Lindley soils occur principally in the Kansan till area, they include soils with ferretto-like profiles. Thus, it seemed desirable to introduce a new series for most of …

Adaptation Of The Original Response To A Conditioned Stimulus, Willace R. Mcallister

Proceedings of the Iowa Academy of Science

Since the time of Pavlov, it has been a common observation that the conditioned stimulus (CS) in a classical conditioning situation is seldom, if ever, a completely neutral stimulus since, prior to learning, it usually elicits some response. However, in most conditioning studies only the change in the conditioned (learned) response has been studied, little systematic work having been conducted on the changes in the original (reflex) response to the CS. Hilgard and his students, mainly in the context of eyelid conditioning experiments (4, 5, 6), have reported some pertinent data, and there have also been some experiments, outside of …

A Cryptographic Machine, Harry Goheen

Proceedings of the Iowa Academy of Science

In a recent textbook (1) on the theory of numbers Professor B. M. Stewart suggests the usefulness of the algebra of matrices over a finite field for encoding messages. The procedure is as follows. First the message is written as a normal message. Then each letter of the alphabet and each punctuation mark is associated with an element of a finite field F. Then the message is broken up into blocks, each block being a square matrix, and each matrix is premultiplied (or postmultiplied) by a non-singular scrambling matrix C whose elements are in the field, F. Each resulting matrix …

A New Method Utilizing Versene For Determination Of The Calcite-Dolomite Ratio In Carbonate Rocks, Robert C. Weissmann, Harvey Diehl

Proceedings of the Iowa Academy of Science

The sedimentary petrologists have long been concerned with the determination of the calcite-dolomite ratio of carbonate rocks. The ratio is difficult to determine in thin section with any accuracy; the minerals are very similar optically and at best only a fair approximation can be obtained by a thin section traverse. The Lemberg staining procedure, which utilizes a silver nitrate-potassium chromate reagent, is rather involved and not too reliable. The differential thermal analysis and thermoluminescence methods are fairly rapid and accurate but involve elaborate equipment.

Notes On Iowa Vascular Plants, Martin L. Grant

Proceedings of the Iowa Academy of Science

Recent collecting and studying in herbaria have called forth the following notes on some of the rarer plants of Iowa. The writer's collections have been, or will be, deposited in the herbaria of Iowa State Teachers College (ISTC), Iowa State College (ISC), the State University of Iowa (SUI), and, for Dickinson County plants, the Iowa Lakeside Laboratory at Lake Okoboji (ILL). Accordingly, herbarium citations are not given for the writer's collections. This article contains notes on 16 species of monocots and 26 of dicots, with one conifer, a total of 43 species, representing 17 families, principally Lemnaceae (5), Orchidaceae (10), …

Relationship Of Time Of Therapy To Teratogeny In Maternal Avitaminosis E, Dorothy Wei Cheng, Byron H. Thomas

Proceedings of the Iowa Academy of Science

The literature concerning teratogeny that is attributable to faulty nutrition of laboratory induced origin was reviewed in a previous publication (Thomas and Cheng: 1952). Any review of this subject leads to the conclusion that there are numerous conditions of nutritional insufficiency which produce congenital abnormalities. Until reported recently (Thomas and Cheng, 1952) none had been ascribed to avitaminosis E. The usual abnormality in reproduction which prevails among pregnant rats in an advanced state of avitaminosis E is fetal resorption. Adequate vitamin E therapy administered promiscuously is not sufficient to circumvent reproductive difficulties. Timing of therapy is an exceedingly important limiting …

Some Attempts At Phylogeny Of Early Vertebrates, George M. Robertson

Proceedings of the Iowa Academy of Science

There is an often-quoted reply of a mountain-climber to the question of his motives in mountain climbing. "Why do I want to climb that mountain? Because it is there." The same characteristic of curiosity has driven men to investigate all sorts of things aside from mountains, and in many, perhaps most, cases we make the same reply if we are really honest. So in paleontology one generally starts with the small-boy motive and some fortunate souls continue with it. They are the rockhounds, the human "pack-rats", like the famous Lauder Dick, the Baker of Thurso. For some of us the …