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Las Golandrinas, Eldred Berkshire Feb 1938

Las Golandrinas, Eldred Berkshire

Purple Pen

No abstract provided.

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Science And Society (Academy Address), Charles E. Friley Jan 1938

Science And Society (Academy Address), Charles E. Friley

Proceedings of the Iowa Academy of Science

Two quotations will serve as texts for this brief discourse on Science and Society: The late Dr. Edwin E. Slosson - "In our civilization the mechanical forces have forged ahead of the moral and intellectual forces. Modern man is like the Arab fisherman who liberated from the bottle genii he did not know how to control." Stuart Chase - "This is the last great adventure; the boldest, most exhilarating, most dangerous adventure that ever challenged the intelligence and spirit of mankind. From our brains have sprung a million wild horses, now running loose and almost certain sooner or later to …

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Use Of The Laboratory In Science Teaching, F. G. Brooks Jan 1938

Use Of The Laboratory In Science Teaching, F. G. Brooks

Proceedings of the Iowa Academy of Science

The most distinctive contribution that the sciences have made to educational practice is the laboratory method of instruction. We can safely attribute much of the progress made in the various scientific fields and a large share of credit for the fine tradition of scholarship that has pervaded the sciences during the past century to this method of teaching. The science of human anatomy received its greatest acceleration when the young Vesalius pushed aside the clumsy barbers who had been brought into the amphitheater to demonstrate dissection and showed the gowned professor that a student could dissect. When Louis Pasteur introduced …

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Some Cytological Details Of Ceresan Poisoning In Seedlings, J. E. Sass Jan 1938

Some Cytological Details Of Ceresan Poisoning In Seedlings, J. E. Sass

Proceedings of the Iowa Academy of Science

Heavy overdoses of Ceresan induces the formation of giant cells in seedlings of corn and small grains. Cell division is inhibited. Nuclear division occurs, with more or less normal prophases. Anaphase separation of halves of split chromosomes fails to take place, accompanied by apparent failure of the sprindle mechanism. Cell wall formation may he initiated, but the evidence suggests subsequent dissolution of partial cell walls.

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The Mental Development Of Children Of The Same Iq In Differing Institutional Environments, Orlo L. Crissey Jan 1938

The Mental Development Of Children Of The Same Iq In Differing Institutional Environments, Orlo L. Crissey

Proceedings of the Iowa Academy of Science

The concept of intelligence as fixed and unmodifiable, or only modifiable within very narrow limits, is yielding to a viewpoint which conceives of intelligence in more functional terms. No longer can it be said that an early intelligence test rigidly classifies a child for life in terms of mental potentialities. Rather, changes in functional mental performance are seen to be related to environmental differences. Recent studies, especially of children at the younger ages, have shown that these changes may be large in extent and appear to follow certain trends in relation to general environmental influences.

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Forest And Soil Studies In Southern Iowa, J. A. Larson, Richard J. Dillworth Jan 1938

Forest And Soil Studies In Southern Iowa, J. A. Larson, Richard J. Dillworth

Proceedings of the Iowa Academy of Science

This paper deals with the present forest lands in southern Iowa counties, giving their relations to topography, soils and settlement; setting forth their local distribution, variations and condition; the depletion due to intensive culling and grazing and the responses of the trees in form and growth to slope, aspect and soil characters. Laboratory analyses have been made of different soil types which support the native trees and efforts will be made to correlate soil depth and quality with form and rate of growth of the trees. The report includes data on age classes and stand densities in that region.

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Possible Representation Of Guadalupan Series Of Iowa, Charles Keyes Jan 1938

Possible Representation Of Guadalupan Series Of Iowa, Charles Keyes

Proceedings of the Iowa Academy of Science

Of all of Iowa's geological formations the Dodge gypsum has held out longest and most resolutely against divulging its age. As is well known, it has been often regarded as Permian, ever since argued by Hall,1 in the middle of the last century; but there were no really direct evidences supporting his notion, and there were no fossils verifying such assumption. Nothing but analogy to other gypsum deposits could ever be adduced. Even Wilder's arguments2 were nothing more than happy analogies; and his conclusions on age and origin could just as well apply to the gypsums of eastern …

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Chronologic Setting Of Des Moines Coal Measures, Charles Keyes Jan 1938

Chronologic Setting Of Des Moines Coal Measures, Charles Keyes

Proceedings of the Iowa Academy of Science

In its broader, or continental, relationships, the chronologic position of our Iowa Productive coal measures assumes an altogether different aspect from that heretofore commonly presented, and that is implied by their incorporation under the title of Pennsylvanian series. Recent physiographic and diastrophic analysis separates completely our Des Moines coal measures, of the continental interior region, from the typical Pennsylvanian coal section of the Atlantic border.

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Student Opinion Of Examinations, Russell D. Miller Jan 1938

Student Opinion Of Examinations, Russell D. Miller

Proceedings of the Iowa Academy of Science

Three hundred twenty-five students in Agricultural .Physics were questioned regarding their preference for and the merits of the four rather general types of examinations, the completion, the multiple choice, the true-false, and the essay type. This survey reveals a decided preference for the multiple choice type of object test. The multiple choice was also ranked highest by the students on the following points: Fairness in grading; the lack of confusing and misleading questions; the number of questions that are thought provoking and require reasoning; the degree to which the questions represent the material taken up in the course; the ability …

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Charts And Pictures As Aids In Teaching Students To Use Identification Keys, H. E. Jacques Jan 1938

Charts And Pictures As Aids In Teaching Students To Use Identification Keys, H. E. Jacques

Proceedings of the Iowa Academy of Science

To do any task well, aims and purposes need to be clearly defined. The application of Biology, like many other subjects, is two-fold; professional and cultural. The majority of the students pursuing biological studies in our schools will never make a direct application of this knowledge in a professional way. On the other hand, cultural ideas secured from the field prove just as valuable to the professional biologist as to those who are interested only in broadening their experiences. Cultural interests for all, plus technical excellence for the minority who plan to make definite use of biology in their life …

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The Effects Of Using A Syllabus On Grade Averages In Elementary Psychology, L. K. Henry, A. R. Lauer Jan 1938

The Effects Of Using A Syllabus On Grade Averages In Elementary Psychology, L. K. Henry, A. R. Lauer

Proceedings of the Iowa Academy of Science

Numerous factors enter into any teaching situation; such as, the number of periods devoted to instruction, methods of carrying on the class, training and personality of the instructor, motivation and ultimate objectives of the student, presence or absence of one or more "spark-plugs" in the class to keep daydreamers on the subject, previous training of the students, difficulty of the textbook and so on. The latter item alone is a matter of major consideration, particularly if it is not fitted to the group. Further, the proper use of textbooks and references, work-books, classnotes, models, charts, demonstrations, motion pictures and other …

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The Phenomenon Of "Increased" Bone Conduction, Noble H. Kelley Jan 1938

The Phenomenon Of "Increased" Bone Conduction, Noble H. Kelley

Proceedings of the Iowa Academy of Science

Previous experimentation has indicated that under the following two conditions one's sensitivity for bone-conducted sound is increased: (1) closure of the external auditory meatus; and (2) filling the meatus with water. There has been much discussion as to whether this '"increased" sensitivity is apparent or real. This study attempted to investigate the phenomenon of "increased" bone conduction in the normal occluded ear. The experimentation was conducted in a sound proof room. The source of sound was a Western Electric 2-A audiometer, which permitted control of the intensity of eight octave frequencies, ranging from 64 to 8192 cycles. The bone conduction …

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The Alumnus, V22n1, January 1938, Iowa State Teachers College Jan 1938

The Alumnus, V22n1, January 1938, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- The Purple and Gold Serves in Far Places
-- Campus Parade
-- Horace Mann Still Lives
-- Bess White Reads Character Over Telephone
-- Job-Getting Bureau Reports on High Road
-- Name the Day: He Knew What He Would Eat
-- Mr. Shillinglaw Tells What He Saw in Europe
-- Teachers College Loses Two Friend in Death
-- Forty Years of Service Bring Honor to Owen
-- Nordley's Cage Team Gets Off to Flying Start
-- Panther Football Squad Reviews Tough Season
-- Here's to Some Panthers on the All-Star Team!
-- These People Visited the …

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Generalization Of The Theorem Of Leibniz, Fred Robertson Jan 1938

Generalization Of The Theorem Of Leibniz, Fred Robertson

Proceedings of the Iowa Academy of Science

Mr. J. A. Joseph in the January, 1938, issue of the monthly extends the theorem of Leibniz from the nth derivative of a product to the nth integral of a product when n is an integer. As a special case he obtains the "Kronecker Formula." It is the aim of this paper to extend the theorem of Leibniz to all values of the index n.

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Hereditary Fusion Of The Proximal Phalandeal Joints, Karl A. Stiles, Robert A. Weber Jan 1938

Hereditary Fusion Of The Proximal Phalandeal Joints, Karl A. Stiles, Robert A. Weber

Proceedings of the Iowa Academy of Science

A case of symphalangy has been traced through six generations. In the course of six generations, seventeen out of nineteen individuals are affected with this trait. In all individuals, with the exception of one young woman, the fifth finger is bent mesially to a very marked degree at the junction of the middle and distal phalanges. In this exceptional case there is no ankylosis in any of the joints of the index finger of the right hand. Symphalangy is symmetrical in all other members of the family.

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Elasticity Of Lead Crystals, Andrew F. Deming Jan 1938

Elasticity Of Lead Crystals, Andrew F. Deming

Proceedings of the Iowa Academy of Science

Baker (University of Illinois) has found that for "resolved shear stress" above 100 lb./sq. in. lead crystals exhibit "creep" and are inelastic. By using the bending beam method it is possible to test for elasticity below Baker's limit. It is then found that lead single crystals, specimens containing several large crystals and even multi-crystal specimens have a definite Hooke's Law region of elastic behavior with no creep.

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The Cause Of The Red-Green Color Change In Euglena Rubra, Leland P. Johnson, Theodore L. Jahn Jan 1938

The Cause Of The Red-Green Color Change In Euglena Rubra, Leland P. Johnson, Theodore L. Jahn

Proceedings of the Iowa Academy of Science

Euglena rubra is one of the species of Euglena in which a color change from green to red may be produced in a few minutes by the migration of pigment granules from central to peripheral positions. The purpose of the present study was to determine the color of light most effective for bringing about this change. Light sources used were direct sunlight and a 500 watt lamp. The organisms were placed between a glass slide and coverslip, and the color change was observed macrosopically and microscopically. When the experimental arrangement permitted heating of the slide to occur, the time necessary …

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The Microfauna Of The Sully Member Of The Pierre, Walter V. Searight Jan 1938

The Microfauna Of The Sully Member Of The Pierre, Walter V. Searight

Proceedings of the Iowa Academy of Science

The upper Cretaceous of the Great Plains, from Kansas northward, is divided, from the base up, into the Dakota, Graneros, Greenhorn, Carlile, Niobrara, Pierre, Fox Hills, and Lance. The Pierre formation has recently been divided along Missouri River in South Dakota into five members on the basis of lithology. These subdivisions, beginning with the lowermost were named the Gregory, Sully, Virgin Creek, Mobridge and Elk Butte.1 In the type locality of the Sully member, in and opposite Sully county, South Dakota, it has been divided into three zones and these zones have been observed along Missouri River in South …

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1938 Old Gold, Iowa State Teachers College Jan 1938

1938 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.

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Wet Thermojunctions For Measuring Relative Humidity, L. A. Richards Jan 1938

Wet Thermojunctions For Measuring Relative Humidity, L. A. Richards

Proceedings of the Iowa Academy of Science

Using wet and dry thermojunctions instead of wet and dry thermometers for measuring relative humidity is a rather obvious variation in experimental procedure. A. V. Hill (4) used thermopiles of fifty junctions for this kind of measurement but his sensitive elements were slow in response because of large thermal capacity and large thermal conduction between junctions. Lanning (2) and later Woodrow (3) successfully used single copper-constantan thermocouples for measuring relative humidity in restricted space. Bal des (1) and McCracken (7) have used thermocouples for measuring osmotic pressure by wetting one junction with the solution to be tested and placing the …

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Late Fall And Winter Bird Records, 1930 To 1938, In The Upper Missouri Valley, Wilfred D. Crabb Jan 1938

Late Fall And Winter Bird Records, 1930 To 1938, In The Upper Missouri Valley, Wilfred D. Crabb

Proceedings of the Iowa Academy of Science

These records are brought together and intended to be a continuation of the winter bird lists of the Upper Missouri Valley, started in 1916 by T. C. Stephens. Dr. Stephens compiled a series of papers during the period of 1916-22,1 after which time Chas. ]. Spiker, then of Sioux City, covered the winter periods from 1922 to 1926.2 Wm. Youngworth published another summary of winter records from 1926 to 1930. 3 The present paper begins at the end of that period. Other papers of this series have taken into account the physical features of this region. Therefore, the …

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The Address Of The President: Water Problems, Arthur C. Trowbridge Jan 1938

The Address Of The President: Water Problems, Arthur C. Trowbridge

Proceedings of the Iowa Academy of Science

Few truisms have wider application than "familiarity breeds contempt." J\Ian takes for granted common and therefore important things such as sunshine, clouds, rain, summer heat and winter cold, the normal winds and calms, the air we breathe, soil, ordinary hills and valleys. They do not attract the attention of the general population. It is true that every twenty-four hours more than a million tons of sand, silt, mud and dissolved salts are carried in Mississippi River past the Carrollton gage at New Orleans and dumped into the Gulf of Mexico. This is too common and familiar - and important – …

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Notes On Parasitic Seed Plants With Reference To Cuscuta, Henry Lee Dean Jan 1938

Notes On Parasitic Seed Plants With Reference To Cuscuta, Henry Lee Dean

Proceedings of the Iowa Academy of Science

The parasitic habit has been developed in relatively few of the higher land plants. No Bryophytes or Pteridophytes are known to be parasitic, and but comparatively few Spermatophytes obtain their food in this manner. No parasites are known in the Gymnosperms. From a taxonomic standpoint the parasitic habit in seed plants is highly restricted. Among the 150,000 Angiosperms approximately 2,000 species are parasitic. This figure includes both partial and obligate parasites. Of this number less than 700 are totally dependent upon a host; the remaining species being able to manufacture at least a part of their food supply. The majority …

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Mississippian Section Near Webster City, Iowa, Lyman W. Wood Jan 1938

Mississippian Section Near Webster City, Iowa, Lyman W. Wood

Proceedings of the Iowa Academy of Science

Exhaustion of many of the gravel supplies in Hamilton County, and difficulty in locating others, has led recently to more careful consideration of limestone rock deposits as sources of road and concrete materials. It has long been known that Mississippian limestones and sandstones are found exposed along Boone River near Webster City, such being mentioned by MacBride,1 in 1909. Miller and Norton,2 and later, Norton3 described deep well sections at Webster City, referring the upper part of them to the Mississippian. With the proportion of limestone found in the surface exposures, and reported at greater depth in …

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Effects Of Visual And Auditory Stimuli On The Brain Waves, Betty Martinson Jan 1938

Effects Of Visual And Auditory Stimuli On The Brain Waves, Betty Martinson

Proceedings of the Iowa Academy of Science

One of the earliest facts noted about the "Alpha rhythm" of the human brain was its reaction to visual stimuli. The blocking caused by a disturbance in the visual field has been remarked in much of the literature. Somewhat later the effect of auditory stimuli was noted, but little experimental work has been done on them. Several writers have also suggested that stimuli of a greater intensity seemed to produce blocking in a shorter time. Growing out of these suggestions the present study has a fourfold aim: (1) To compare the latency time of the two types of stimuli. visual …

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A New Attitude Scale On Religion And Ethics, Leigh C. Douglass, Fred Eisen Jan 1938

A New Attitude Scale On Religion And Ethics, Leigh C. Douglass, Fred Eisen

Proceedings of the Iowa Academy of Science

This is a new attitude scale constructed in part after the procedure of Thurstone and Chave, but adapted so that two supposedly related attitudes can be measured and studied to see the extent to which both attitudes may be found in the same subject. The test allows for a measurement of attitudes towards both religion and ethics, and for an estimate of the degree of conservatism or radicalism of each of these attitudes. Suggestions for the use of the scale are also given.

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Pennsylvanian Section At Crescent, And Logan, Iowa, Lyman W. Wood Jan 1938

Pennsylvanian Section At Crescent, And Logan, Iowa, Lyman W. Wood

Proceedings of the Iowa Academy of Science

Scarcity of road material supplies in southwestern Iowa has led the State Highway Commission to make careful scrutiny of all rock outcrops and to investigate thoroughly any which show promise. One such exposure, in SE¼ SE¼ Section 27, Crescent Township, Pottawattamie County, was test pitted in 1935. The complete section, including test pits, was referred by Wood and Reed to the Westerville, Cherryvale and Winterset members of the Kansas City Stage of the Missouri Series. Another, at Logan (SE¼ NW¼ Section 19, Jefferson Township, Harrison County) was test pitted in 1934, the section being assigned by Wood2 to the …

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The Oldest Iowa Tree, W. A. Anderson Jan 1938

The Oldest Iowa Tree, W. A. Anderson

Proceedings of the Iowa Academy of Science

In the summer of 1937 the State University of Iowa and the Iowa Lakeside Laboratory each received, through the courtesy of Mr. C. W. Schramm of Des Moines sections of a very large red cedar (Juniperus virqiniana L.). This tree had grown near Lake Okoboji, Dickinson County, Iowa. According to .Mr. Schramm the tree died sometime between 1880 and 1890. He cut it down previous to 1900 and worked it up into numerous ornaments and pieces of furniture. A fragment which was left lay in the yard of his summer cottage at Lake Okoboji from 1907 to 1937 when …

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The Fir Forests Of Iowa, Henry S. Conard Jan 1938

The Fir Forests Of Iowa, Henry S. Conard

Proceedings of the Iowa Academy of Science

The occurrence of balsam fir (Abics balsamea) m Allamakee County was recorded by Macbride. He noted it as "Not rare. A fine grove on the hill above Yellow River, near Myron." In Winneshiek County it was recorded by Shimek. He considered it "Not rare, along rocky slopes and above ledges along the upper course of the Upper Iowa River. Most abundant near Kendallville and Bluffton." Several visits to these areas in the last five years enable us to report on present conditions and on certain other species of this region.

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The Content Of The Beginning Course In Psychology, Earle E. Emme Jan 1938

The Content Of The Beginning Course In Psychology, Earle E. Emme

Proceedings of the Iowa Academy of Science

Gordon W. Allport (1) in his recent volume on "Personality" makes it very clear that psychologists are at work upon many factors, conditions, and uniformity of events related' to individuals; so that sometimes "science regards the individual as a mere bothersome accident" and is usually at work upon a "somewhat shadowy portrait." He goes on to point out that such psychological studies are not very satisfying when compared with the "living individual models" from which the data is taken. Thoroughgoing psychology cannot omit the individual at work with his intellect, motives, emotions, and his desires for personal security and efficiency.

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