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Techniques Used For Improving Visual Efficiency, Robert Allbaugh, Charles Miller Jan 1946

Techniques Used For Improving Visual Efficiency, Robert Allbaugh, Charles Miller

Proceedings of the Iowa Academy of Science

During the war a great many claims were made for methods of increasing visual acuity, decreasing astigmatism, correcting eye muscle balance and even to overcoming color blindness. A veritable wave of cures has arisen to aid young men with borderline vision who desire to enlist in the air corps or other branches of the service requiring nearly perfect vision. The civilian population will probably feel the effects of these remedies which are causing some concern in optical circles. The present authors are attempting to attack the problem experimentally and this paper is presented as a survey of the field as …

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In Memoriam: Henry Lane Bruner; Lowell Holbrook Chamberlain; Clyde W. Emmons; Annie Wilson Fleming; William Headrick Gemmill; Thomas J. Maney; Florence Willey Nichols; Henry Waldo Norris; Charles Dana Reed, Nathan E. Pearson, O. R. Sweeney, Gertrude A. Herr, Helen F. Smith, Earle D. Ross, H. H. Plagge, Ada Hayden, Henry S. Conard, Lyle R. Fletcher Jan 1946

In Memoriam: Henry Lane Bruner; Lowell Holbrook Chamberlain; Clyde W. Emmons; Annie Wilson Fleming; William Headrick Gemmill; Thomas J. Maney; Florence Willey Nichols; Henry Waldo Norris; Charles Dana Reed, Nathan E. Pearson, O. R. Sweeney, Gertrude A. Herr, Helen F. Smith, Earle D. Ross, H. H. Plagge, Ada Hayden, Henry S. Conard, Lyle R. Fletcher

Proceedings of the Iowa Academy of Science

No abstract provided.

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Officers, Committees, Past Presidents, And Members, Iowa Academy Of Science Jan 1946

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

Proceedings of the Iowa Academy of Science

No abstract provided.

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Seasonal Development In The Grape Following Frost Injury, J. M. Aikman Jan 1946

Seasonal Development In The Grape Following Frost Injury, J. M. Aikman

Proceedings of the Iowa Academy of Science

The occurrence of frost injury in microclimatic (4) areas much, later in the spring and earlier in the fall than seemed possible from an examination of Weather Bureau records has been noted many times by a number of investigators (1, 3, 6). Quantitative temperature and growth data have been presented for microclimatic areas of varied topography in southern Iowa which showed a close relationship between reduction in temperature in the early spring of 1942 and the degree of frost injury in the grape (1, 2).

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Weed Control By Means Of Chemicals, A. L. Bakke Jan 1946

Weed Control By Means Of Chemicals, A. L. Bakke

Proceedings of the Iowa Academy of Science

Weed control by means of chemicals has become an important factor in our struggle to eradicate weeds. There are few weed problems which chemicals cannot at least aid. However, in many cases, their use is limited by their cost. It has generally been held that chemicals are too expensive for large infestations of weeds. In northwest Iowa where there are thousands of acres of European bindweed (Convolvulus arvensis L.) chemicals of the present day cannot be recommended on account of the cost. To control this noxious weed it has been necessary to resort to cultivation and competitive cropping, processes …

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A Method Of Producing Stromata In Claviceps, Lois Tiffany Jan 1946

A Method Of Producing Stromata In Claviceps, Lois Tiffany

Proceedings of the Iowa Academy of Science

Although numerous methods have been developed in attempts to produce the perfect stage from Claviceps sclerotia, they are often time consuming and of uncertain results. The technique reported here outlines an easy method of producing perithecial heads indoors with a minimum of attention.

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Sparing Genes For Further Evolution, J. A. Weir Jan 1946

Sparing Genes For Further Evolution, J. A. Weir

Proceedings of the Iowa Academy of Science

The first step in biological evolution, according to the classical concept, was the ability of an organic entity, the gene, to duplicate itself by utilizing available inorganic molecules which themselves were incapable of reproduction. The next step was the acquisition by the gene of the property of catalyzing the production of a substance other than itself to be utilized as its host. In this way an aggregate of genes, each responsible for a specific reaction, could give rise to more complex structures. The manner of development of a simple organism would then depend upon the actions of the genes which …

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Iowa's First Prairie Preserve, Mrs. Addison Parker Jan 1946

Iowa's First Prairie Preserve, Mrs. Addison Parker

Proceedings of the Iowa Academy of Science

The State Conservation Commission is honored today to participate in this Centennial Program of the Iowa Academy of Science. It was a quarter of a century ago that the vision of such men of 8Cience as Dr. Macbride, Professor Shimek, Dean Nagler and Professor Pammel gave inspiration and direction to the creation of a State Board of Conservation. Later, in the early 30's, this Board was merged with the Fish and Game Commission, together forming the present Conservation Commission. Under the leadership of Mr. Jay Darling, a member of the former State Fish and Game Commission, the Iowa 25-year Conservation …

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The Progeny Of La France, The First Hybrid Tea, Clark D. Paris, T. J. Maney Jan 1946

The Progeny Of La France, The First Hybrid Tea, Clark D. Paris, T. J. Maney

Proceedings of the Iowa Academy of Science

Just what prompted Guillot fils of Lyon-Montplaisir, France, to name a pink· rose, introduced in 1867, La France may never be known. Subsequent history has shown that this rose was the first Hybrid Tea. It was grown from a seed of Mme. Bravy, a creamy white tea, fertilized by Victor Verdier a bright rose-colored Hybrid Perpetual. Since the French rosarians have originated the first variety that became the progenitor of most of the major classes of modern roses, no better name could have been found for the first Hybrid Tea. Around the turn of the twentieth century, this class of …

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The Alumnus, V29n4, October 1945, Iowa State Teachers College Oct 1945

The Alumnus, V29n4, October 1945, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Fall and Winter Events
-- The Campus Today
-- Panther Again Goes on the Prowl
-- Dean Reed, Boardman Assume Emeritus Status
-- T.C. Homecoming To Be Held November 2-4
-- Class of 1895 Celebrates 50th Anniversary
-- Fifteen New Members Added to College Staff
-- Letters to the Editor
-- Service Men's Directory
-- Women in Uniform
-- Keeping Up with Alumni
-- Marriages
-- Births
-- Deaths
-- Publications Available Upon Request

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The Alumnus, V29n3, July 1945, Iowa State Teachers College Jul 1945

The Alumnus, V29n3, July 1945, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- The Postman's Plea
-- The Campus Today
-- "Teach World-Mindedness," Dr. Bodein
-- New Faculty Faces at Teachers College
-- "Eye" Sets Eight-Year "All-American" Record
-- Joan Piper Teaches the Blind to Swim, Play
-- Letters to the Editor
-- Faculty Has Long-Time Record of Service
-- The Roll of Honor
-- Women in Uniform
-- Service Men's Directory
-- Keeping Up with Alumni
-- Marriages
-- Births
-- Deaths
-- Publications Available Upon Request

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Certain Factors Influencing The Tolerance Of Lights And Visual Acuity, A. R. Lauer, Edwin H. Silver Jan 1945

Certain Factors Influencing The Tolerance Of Lights And Visual Acuity, A. R. Lauer, Edwin H. Silver

Proceedings of the Iowa Academy of Science

The problem of light tolerance has been studied from numerous points of view but most of the studies have not been fruitful so far as producing usable constants are concerned. Van Lear (1940) has touched on some vital related points in his study of the optical properties of reflector signs. It is shown that a very small object, such as a reflector button % inch in diameter, will be visible for a distance of from 1000-2000 feet. At such distance the wave front from a headlight cannot exceed .05 f. c. with the best luminant now in use on automobiles …

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1945 Old Gold, Iowa State Teachers College Jan 1945

1945 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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The Trend Of Soluble Nitrate, Phosphate And Potassium Concentrate In The Development Of The Spinach Petiole, James F. Harrington Jan 1945

The Trend Of Soluble Nitrate, Phosphate And Potassium Concentrate In The Development Of The Spinach Petiole, James F. Harrington

Proceedings of the Iowa Academy of Science

It is quite clear (Beeson, 1941) that factors other than the availability of a nutrient influence the concentration of that nutrient in the plant. If the concentration in the plant of a given nutrient is to be used as a measure of the availability of that nutrient in the soil, then the other factors affecting the concentration must be evaluated so that correction factors can be established or else a method of sampling must be evolved in which the influence of the factors is negligible. Previous work by several authors indicates that sampling error can be reduced if the morphologically …

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Officers, Committees, Past Presidents, And Members, Iowa Academy Of Science Jan 1945

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

Proceedings of the Iowa Academy of Science

No abstract provided.

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Linaria Minor (L.) Desf. In Johnson County, Iowa, Robert C. Miller Jan 1945

Linaria Minor (L.) Desf. In Johnson County, Iowa, Robert C. Miller

Proceedings of the Iowa Academy of Science

Linaria Minor (L.) Desf., a small European species, seems to have become locally abundant in railroad ballast in the vicinity of Iowa City. Specimens in the Herbarium of the State University of Iowa show that it was collected in 1932 by W. J. Himmel, and in 1942 by G. W. Martin. In 1944 it was very abundant between the ties of the Crandic interurban line and of the Rock Island line south of the Iowa City Airport. There seems to be no previous reference to this species in Johnson County. Neither Fitzpatrick (2) nor Somes (3) mention it, but …

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The Roses Frau Karl Druschki And Mme. Edouard Herriot Carry On The Progeny Performance Of Their Common Parent, Mme Caroline Testout, C. D. Paris, T. J. Maney Jan 1945

The Roses Frau Karl Druschki And Mme. Edouard Herriot Carry On The Progeny Performance Of Their Common Parent, Mme Caroline Testout, C. D. Paris, T. J. Maney

Proceedings of the Iowa Academy of Science

In a previous paper it was shown that the rose Mme. Caroline Testout was a superior parent in rose breeding as judged by the large number of outstanding progeny which it had produced, either as sports or when Mme. Caroline Testout or its descendants were used as pollen or seed parents. A study of the progeny of Mme. Caroline Testout reveals the fact that two of its seedlings are also outstanding in plant characteristics and as producers of superior rose varieties. These roses are the Frau Karl Druschki, one of the most reliable and beautiful white roses listed as hybrid …

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The Preparation Of High School Science Teachers In Iowa, Karl A. Stiles Jan 1945

The Preparation Of High School Science Teachers In Iowa, Karl A. Stiles

Proceedings of the Iowa Academy of Science

The Cooperative Committee on Science Teaching published a very interesting report entitled "The Preparation of High School Science Teachers." This report pointed out that many of the science teachers in America are inadequately prepared for their jobs. The writer has long felt that that was particularly true of the Iowa science teachers. He has also been disturbed by the fact that our state requirements for certification of teachers were such that one .could teach high school biology with only five semester hours of college credit. The same thing is true for chemistry and physics. On the other hand, a language …

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Reports - Executive Committee; Secretary; Treasurer; Staff Reports; Committee Reports Jan 1945

Reports - Executive Committee; Secretary; Treasurer; Staff Reports; Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

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In Memoriam: Charles Carter; James Penn Goodrich; William Harmon Norton; Dayton Stoner; William Trelease, Theodore L. Jahn, Neil A. Miner, Charles R. Keyes, T. C. Stephens, Ada Hayden Jan 1945

In Memoriam: Charles Carter; James Penn Goodrich; William Harmon Norton; Dayton Stoner; William Trelease, Theodore L. Jahn, Neil A. Miner, Charles R. Keyes, T. C. Stephens, Ada Hayden

Proceedings of the Iowa Academy of Science

No abstract provided.

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Determination Of Soil Moisture Content At Permanent Wilting For Us In Field Studies, J. M. Aikman, J. R. Dilworth Jan 1945

Determination Of Soil Moisture Content At Permanent Wilting For Us In Field Studies, J. M. Aikman, J. R. Dilworth

Proceedings of the Iowa Academy of Science

In ecological investigations of interactions between plants and soil moisture, whether the aim is to determine fundamental plant-environment relationships or primarily to solve immediate plant production problems, the soil moisture content at permanent wilting, expressed as a percentage of the dry weight, is a basic determination. Although there is evidence that this soil moisture value may not represent the exact non-available moisture content of the soil (4, 8) it is generally agreed that it represents the limit of favorable plant growth conditions and will be considered here as non-available soil moisture.

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Deposition Of Sediment In The Iowa River At Iowa City, Iowa, Troy L. Péwé Jan 1945

Deposition Of Sediment In The Iowa River At Iowa City, Iowa, Troy L. Péwé

Proceedings of the Iowa Academy of Science

The Iowa River in the vicinity of Iowa City (Fig. 1.) is a mature stream which meanders over the Kansan and Iowa till plains in its course to the Mississippi River. The river, gathering water and sediment from the 3,230 square miles of the drainage basin which lies up stream from Iowa City, flows by as a muddy stream with an average discharge of 1,432 cubic feet per second (Crawford, 1942). Although sometimes heavily charged with sediment, it is on the whole not a heavy suspended sediment carrier as the average concentration of sediment in parts per million over a …

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A Study Of The Errors Resulting From The Use Of Turbidity In Computing The Suspended Sediment Discharge Of Iowa Streams, Paul C. Benedict Jan 1945

A Study Of The Errors Resulting From The Use Of Turbidity In Computing The Suspended Sediment Discharge Of Iowa Streams, Paul C. Benedict

Proceedings of the Iowa Academy of Science

The systematic measurement of the suspended sediment transported by streams has been limited to special investigations with the exception of a few daily sampling stations operated in southwestern United States to provide data on the probable life of present and proposed reservoirs. However, the vital importance of records of sediment discharge of streams in other sections of the United States has become apparent in connection with a variety of projects relating to river control and beneficial use of the nation's water resources. In the last few years, proposed developments in Iowa for flood control, navigation, drainage systems, recreational facilities, and …

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The Alumnus, V28n4, October 1944, Iowa State Teachers College Oct 1944

The Alumnus, V28n4, October 1944, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Home of the Nation's Largest Student Teaching Program
-- The Campus Today
-- Alumnus Follows Grads to Many Distant Lands
-- Teachers College Prepares for G.I. Education
-- Teachers College Receives Citation for Service
-- Service Men's Directory
-- Letters to the Editors
-- Roll of Honor
-- Let's Face the Future, Says Norman Cousins
-- Students Reclaim Dormitories As Air Corps Closes Campus Unit
-- Women in Uniform
-- Ten New Names on Faculty Rolls
-- Keeping Up with Alumni
-- Marriages
-- Births
-- Deaths
-- Fall and Winter Events

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The Alumnus, V28n3, July 1944, Iowa State Teachers College Jul 1944

The Alumnus, V28n3, July 1944, Iowa State Teachers College

The Alumnus

Inside This Issue;
-- The Campus Today
-- Graduates Are Urged to Teach Courageously
-- Women War Workers
-- Letters to the Editors
-- They Keep in Touch
-- Publications In a Year of War
-- Campus Publications Tend the Home Fires
-- Service Men's Directory
-- Women in Uniform
-- Anne Stuart Duncan
-- Keeping Up with Alumni
-- Marriages
-- Births
-- Deaths
-- Laboratory for Future Teachers
--We Can't Let Them Run in the Streets

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Iowa State Teachers College Schedule Of Classes, Winter/Spring 1943-44, Iowa State Teachers College Apr 1944

Iowa State Teachers College Schedule Of Classes, Winter/Spring 1943-44, 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.

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The Iowave [Newspaper], April 21, 1944, United States. Naval Reserve. Women's Reserve. Jan 1944

The Iowave [Newspaper], April 21, 1944, United States. Naval Reserve. Women's Reserve.

The IOWAVE [newspaper]

The IOWAVE was a newspaper focused on the activities of the WAVES (Women Accepted for Volunteer Emergency Service) who were being trained at the Naval Training School temporarily located on the campus of Iowa State Teachers College (later the University of Northern Iowa). The IOWAVE newspaper includes many articles regarding the day-to-day life of the WAVES trainees, as well as articles chronicling the ongoing progress of the war effort.

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Recent Advances Of The Forest In Iowa, W. E. Loomis, A. L. Mccomb Jan 1944

Recent Advances Of The Forest In Iowa, W. E. Loomis, A. L. Mccomb

Proceedings of the Iowa Academy of Science

At the time of settlement Iowa was definitely a prairie state with less than 20 per cent of its area covered by timber. Such a distribution of vegetation, coupled with short time observations, has led to the general assumption that prairie is the climax vegetation of the state. The writers have recently (7) assembled evidence that the present climate of Iowa is capable of supporting a forest climax. Prairie is therefore a subclimax associes maintained by its early establishment and by the marginal nature of the climate, but particularly by a combination of soil factors favoring prairie over woodland. The …

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A Seed Key To Fourteen Species Of Geraniaceae, Margaret Murley Jan 1944

A Seed Key To Fourteen Species Of Geraniaceae, Margaret Murley

Proceedings of the Iowa Academy of Science

A program of seed identification by keys has been initiated in the Iowa State College Seed laboratory. The recognition of external structural characteristics of seeds is of primary importance to the seed analyst who has no material to serve as a basis of classification and identification other than seeds or fruits. Descriptions of features that aid in placing a seed in its family, genus, or species are of value not only for the seed analyst but for the taxonomic botanist as well. The Geraniaceae has been chosen for a beginning in this investigation. Fernald (1935) working on the annual and …

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Paspalum In Iowa, Margaret Murley Jan 1944

Paspalum In Iowa, Margaret Murley

Proceedings of the Iowa Academy of Science

A single entity in the genus Paspalum is known to be native to Iowa. With one exception, the Iowa specimens in the herbaria of Iowa State College and the University of Iowa are from the eastern half of the state. The material is from the following ten counties: Allamakee, Clayton, Clinton, Johnson, Muscatine, Louisa, Lee, Davis, Monroe and Harrison (Fig. 1). These collections have been made at varying intervals from 1875 to 1943. From the descriptive labels such as "a sandy river terrace," "Big Sand Mound, Muscatine Island," "sandy fields," the habitat is one of dry sandy situations. Future collecting …

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