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Variations In The Finger Length Of The Human Hand, Elizabeth Barnard, G. Mendoza Jan 1954

Variations In The Finger Length Of The Human Hand, Elizabeth Barnard, G. Mendoza

Proceedings of the Iowa Academy of Science

Although a great deal has been written concerning the occurrence of abnormalities of the hands and fingers, relatively few studies have been made to determine variations of the normal hand. The purpose of this study is to gather some valid statistics concerning the occurrence of variations in finger length within a segment of the general population. It is hoped that this study will serve as the beginning of a valid basis upon which a study of human inheritance can be built. Because the interindividual difference in the pattern of finger length consists in the relationship between the index and ring …

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The Yolk Nucleus And Cytoplasmic Inclusions Of The Egg Of The Goldfish, Carassius Auratus, Guillermo Mendoza Jan 1954

The Yolk Nucleus And Cytoplasmic Inclusions Of The Egg Of The Goldfish, Carassius Auratus, Guillermo Mendoza

Proceedings of the Iowa Academy of Science

It is the purpose of this paper to contribute some information concerning certain cytoplasmic components of the ovum of the goldfish, Carrassius auratus. The writer's primary concern has been the study of the yolk nucleus although some data is given relative to golgi bodies, mitochondria, and yolk. Much already has been written about the "yolk nucleus" of invertebrates and vertebrates but whereas considerable work has been done on the golgi bodies, mitochondria, and yolk of the eggs of fishes, less has been done on the "yolk nucleus" of these forms. Certainly the early work of Balbiani in 1873 (quoted …

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A Study Of Soil Protozoa On An Iowa Virgin Prairie, Robert F. Mote Jan 1954

A Study Of Soil Protozoa On An Iowa Virgin Prairie, Robert F. Mote

Proceedings of the Iowa Academy of Science

It has been known for a considerable time that protozoa may be important in soil fertility. It was felt that it would be interesting and valuable to determine the protozoans present in a virgin prairie. Such a prairie is located near Crocker, Iowa. The present investigation on a virgin prairie is centered upon (1) what organisms would be present, (2) the organisms at each station and depth, and their description by drawing, and (3) correlations of the organisms at each station with other stations and depth with depth.

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A Community Occupational Survey Of Cedar Falls, Iowa, 1954: A Summary Of An Independent Faculty Research Study At The Iowa State Teachers College, Peter George Haines, Rea Erwin Cunningham Jan 1954

A Community Occupational Survey Of Cedar Falls, Iowa, 1954: A Summary Of An Independent Faculty Research Study At The Iowa State Teachers College, Peter George Haines, Rea Erwin Cunningham

History of Education Book Gallery

No abstract provided.

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A Sampling Study Of The Blue Point Woods, Poweshiek, Co., Iowa, James E. Dimit, Norman H. Russell Jan 1954

A Sampling Study Of The Blue Point Woods, Poweshiek, Co., Iowa, James E. Dimit, Norman H. Russell

Proceedings of the Iowa Academy of Science

During the fall of 1953 a study was made of the Blue Point Woods, an area located approximately nine miles southeast of Grinnell, in Section 14 of Washing ton Township, Poweshiek County, Iowa. The Blue Point forest is clearly divided into three stands, two of which are approximately the same age and older than the last. These stands are oriented in a north-south direction. From north to south, respectively, we find an old, grazed stand; a younger, cut-over stand; and a very old, undisturbed stand. The old, grazed stand is fairly open with little in the way of herbaceous and …

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Radiochlorine36 As A Tracer In The Decomposition Of Potassium Chlorate, F. E. Brown, J. D. Woods Jan 1954

Radiochlorine36 As A Tracer In The Decomposition Of Potassium Chlorate, F. E. Brown, J. D. Woods

Proceedings of the Iowa Academy of Science

The thermal decomposition of potassium chlorate has been shown to be complex. Oxygen is evolved and, depending upon the conditions, various quantities of perchlorate are formed. At least two sets of equations have been proposed to explain the reaction. Otto and Fry (5) proposed that potassium chlorate decomposes by two simultaneous reactions.

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Property Variations In The Wisconsin Loess Of East-Central Iowa, C. A. Lyon, R. L. Handy, D. T. Davidson Jan 1954

Property Variations In The Wisconsin Loess Of East-Central Iowa, C. A. Lyon, R. L. Handy, D. T. Davidson

Proceedings of the Iowa Academy of Science

As part of a long-range project to investigate the stabilization of loess and glacial till for low cost road construction, property studies of the Wisconsin loess of east-central Iowa were carried on at the Engineering Experiment Station of Iowa State College during the year 1952-1953. Previous work 1,2,3,4 1950-1952, dealt with the properties of the Wisconsin loess of southwestern Iowa; stabilization studies are now under way with the loess from that area. In east-central Iowa, the loess was studied with a two-fold objective: to determine the variations in properties pertinent to stabilization, and to compare these properties with those of …

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An Elastomagnetic Effect, Grant O. Gale Jan 1954

An Elastomagnetic Effect, Grant O. Gale

Proceedings of the Iowa Academy of Science

The effect of stress upon the magnetic properties of ferromagnetic materials has been known and studied for many years. The name usually associated with this is Villari1. "Matteucci discovered that pulling or stretching a ferromagnetic rod changes its magnetic induction. Villari, however, with greater refinement of method found that if an icon rod is stretched when weakly magnetized its magnetic induction will be increased, whereas stretching the same rod in a strong field its magnetic induction will be decreased. This is known as the Villari reversal effect."

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Is Age Kinder To The Initially More Able?, Duane E. Thompson Jan 1954

Is Age Kinder To The Initially More Able?, Duane E. Thompson

Proceedings of the Iowa Academy of Science

Investigations concerning the effects of age upon mental ability commonly report that individual differences increase with age. (1, 2, 4) Further those authors who attempt an explanation of this increase generally attribute it to a differential gain or loss by initial ability level. Jones and Conrad (2) imply that increased variability with age of certain sub-tests of Alpha is attributable to a longer duration of growth for the more able than for the less able, and conversely that a decrease in variability is due to a longer duration of growth for the less able. A later investigation by Foulds and …

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The Preparation And Purification Of Protyrosinase, Joseph Hall Bodine Jan 1954

The Preparation And Purification Of Protyrosinase, Joseph Hall Bodine

Proceedings of the Iowa Academy of Science

The presence of the inactive form of the enzyme tyrosinase in the egg of the grasshopper (Melanoplus differentialis) is of considerable interest since it has been found possible to isolate and activate it by various physico-chemical means (Bodine and Carlson, 1940). The reproductibility of these results depends to a great degree upon the purity of the sample of proenzyme obtained. Extensive purification of the enzyme has been carried out and the general physico-chemical properties of various preparations are noted below.

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Winter Movements And Covey Composition Of The Eastern Bob-White, Roger H. Boehnke Jan 1954

Winter Movements And Covey Composition Of The Eastern Bob-White, Roger H. Boehnke

Proceedings of the Iowa Academy of Science

Before a game species can be managed properly, it is necessary to have a knowledge of its mobility patterns. The radius of mobility from a center will determine minimum range requirements for the game bird or mammal. Some of the earliest banding studies (Stoddard, 1931) indicated that nearly half of the quail spent their life-spans within a quarter mile of their birth places. Few ever wandered more than a mile. Later studies in other parts of the country (Duck, 1943; Lehmann, 1946; Murphy and Baskett, 1952) have shown that quail make longer movements. Because of these varying movement records in …

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An Investigation Of The Relationship Between Verbal Responses And Responses To A Visual Perceptual Task, Frank R. Clarke Jan 1954

An Investigation Of The Relationship Between Verbal Responses And Responses To A Visual Perceptual Task, Frank R. Clarke

Proceedings of the Iowa Academy of Science

For some time, psychologists have postulated the existence of a relationship between responses to perceptual tasks and responses to tests proported to measure personality variables. As Thurstone (8) states, "The fundamental hypothesis involved here is that the dynamics of perception and other restricted functions are not isolated and that these several functions are so related that some characteristic of the person as a whole might be inferred from the dynamics of one of these functions." Responses in terms of color or form to an ambiguous stimulus are thought by many to be correlated with more global characteristics of the individual. …

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Transfer And Retention In Performance On The Star Discrimeter, Don Lewis Jan 1954

Transfer And Retention In Performance On The Star Discrimeter, Don Lewis

Proceedings of the Iowa Academy of Science

Performance on the Star Discrimeter has several interesting features, the most important of which have to do with retention and transfer. This paper summarizes recently obtained data and offers a tentative explanation. A brief description of the apparatus and the task that is learned should first be given. The Iowa model of the Discrimeter is basically like the original unit developed at Northwestern University (1). The subject learns to move a vertical wobble-stick rapidly into one of six horizontal channels, depending on the color of the light that appears on a stimulus panel 30 inches away at eye level. The …

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Present Status Of Our Knowledge Of The Vascular Plant Flora Of Iowa, Robert F. Thorne Jan 1954

Present Status Of Our Knowledge Of The Vascular Plant Flora Of Iowa, Robert F. Thorne

Proceedings of the Iowa Academy of Science

The flora of Iowa is relatively well known compared to that of some of the southern and western states. Many of the earlier botanists in the state, like Macbride, Shimek, Fitzpatrick, Arthur, Pammel, Cratty, and Conard, collected extensively throughout the state. Much floristic work has been done by other botanists, often in limited areas, during and since their time. There is, however, no modern complete flora of Iowa. There is not even a complete check list of the known vascular plants of the state. Conard's very useful "Plants of Iowa" (1951) with keys to the more common native and cultivated …

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Accuracy Of Clinical Judgments Of Attrition And Survival Of Students In Engineering Training, Albert B. Truesdell Jan 1954

Accuracy Of Clinical Judgments Of Attrition And Survival Of Students In Engineering Training, Albert B. Truesdell

Proceedings of the Iowa Academy of Science

Clinical tests have received widespread acceptance as tools for predicting and assessing human potentialities. A casual review of the testing area reveals the existence of a large number and variety of such instruments. In the use of tests, the counselor is the common denominator-he is the one who clarifies, interprets and makes recommendations to the counselee. Sherman (1) found that experienced clinicians, using Kuder profiles, could more accurately predict curricular appropriateness in the physical and biological sciences than in English. Appropriateness is defined as grade point average. If a student gets a higher grade point average in English than chemistry, …

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A Community Occupational Study Of Cedar Falls, Iowa: An Independent Faculty Research Project, Peter G. Haines, Rea Erwin Cunningham Jan 1954

A Community Occupational Study Of Cedar Falls, Iowa: An Independent Faculty Research Project, Peter G. Haines, Rea Erwin Cunningham

History of Education Book Gallery

No abstract provided.

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Title Page - Front Matter Jan 1954

Title Page - Front Matter

Proceedings of the Iowa Academy of Science

No abstract provided.

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Proceedings Of The Sixty-Sixth Meeting Of The Iowa Academy Of Science Held At Iowa State College, April 30 And May 1, 1954: Minutes Of The 1954 Meeting Jan 1954

Proceedings Of The Sixty-Sixth Meeting Of The Iowa Academy Of Science Held At Iowa State College, April 30 And May 1, 1954: Minutes Of The 1954 Meeting

Proceedings of the Iowa Academy of Science

No abstract provided.

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Reports: The Secretary; The Treasurer; The Editor; Committee Reports Jan 1954

Reports: The Secretary; The Treasurer; The Editor; Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

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Officers, Past Presidents, And Members, Iowa Academy Of Science Jan 1954

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

Proceedings of the Iowa Academy of Science

No abstract provided.

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Address To The Academy: Iowa's Farm Forestry Program, M. A. Ellerhoff Jan 1954

Address To The Academy: Iowa's Farm Forestry Program, M. A. Ellerhoff

Proceedings of the Iowa Academy of Science

It is well that the Iowa Academy of Science recognize that the trees in our woodlands are a farm crop since 98% of Iowa's timber is farm owned. In addition, we must recognize timber as a natural resource that can be renewed, providing proper management is given to it. Our woodlands are intimately related to the agricultural problems of the State, in that they are the protectors of agricultural soil and the guardians of our water supply. They play an indispensable and permanent role in our economy both rural and urban. The total value of lumber and other forest products …

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Presidential Address: Present Geological Research On Ground-Water Resources In Iowa, H. Garland Hershey Jan 1954

Presidential Address: Present Geological Research On Ground-Water Resources In Iowa, H. Garland Hershey

Proceedings of the Iowa Academy of Science

In the presidential address of 1938 before this Academy and in the presence of many of you, A. C. Trowbridge outlined our water problems with the thought that generally such problems can best be solved after they have been brought out into the open. He was correct in his thinking and many of the problems that he recognized are now on the way to solution. Our water situation has changed so vastly in the intervening 16 years that it is apropos again to examine it. However, the mass of data is now so great that I shall attempt to discuss …

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Keys To Sweet Clovers (Melilotus), Duane Isely Jan 1954

Keys To Sweet Clovers (Melilotus), Duane Isely

Proceedings of the Iowa Academy of Science

Melilotus is a Eurasian leguminous genus of some twenty species. Two species, M. albus and officinalis, introduced to the North American continent are now among the most important broad-leaved forages. M. indicus is a naturalized common weed in the southwestern United States; M. altissimus is locally established in the northeastern states. During the last two decades, the sweet clovers have been under investigation at several stations with respect to the development, through plant breeding, of new and improved strains. Some of the immediate goals have been increased yield, improved forage quality, and freedom from coumarin. In this connection, investigators have …

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Notes On Iowa Fungi. Xiii, G. W. Martin Jan 1954

Notes On Iowa Fungi. Xiii, G. W. Martin

Proceedings of the Iowa Academy of Science

The late summer and fall of 1953 was one of the driest seasons on record in much of Iowa. After the torrential rain and windstorm of July 4, there was very little precipitation in the Iowa City area until late fall and the total recorded was a record low. Nevertheless, trips to Macbride State Park on August 5 and one to White Pine Hollow on the 7 provided excellent collecting, including what arc believed to be new records of agarics and boletes for the State. Report on most of these will be deferred until opportunity has been afforded for detailed …

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Inheritance Of Resistance To Two Races Of Puccinia Coronata Cda. Var. Avenae Fraser And Led., M. D. Simons, H. C. Murphy Jan 1954

Inheritance Of Resistance To Two Races Of Puccinia Coronata Cda. Var. Avenae Fraser And Led., M. D. Simons, H. C. Murphy

Proceedings of the Iowa Academy of Science

Oats rank third in importance among the cereal crops of the United States and represent the most important small grain crop in many states. Crown rust (Puccinia coronata Cda. var. avenae Fraser & Led.) usually has been the most destructive disease of oats in the United States and throughout the world. The most effective means of controlling this disease has been the development and distribution of varieties resistant to the common races of the fungus. Before a resistant variety can be used effectively and efficiently as a source of resistance in breeding, it is essential that the genetic factors …

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The Determination Of Small Amounts Of Trichloroethylene In Soybean Oil Meal, Lionel K. Arnold, George Burnett Jr. Jan 1954

The Determination Of Small Amounts Of Trichloroethylene In Soybean Oil Meal, Lionel K. Arnold, George Burnett Jr.

Proceedings of the Iowa Academy of Science

In a previous paper before the Academy (1) Hollowell and the senior author presented a method for determining small amounts of trichloroethylene in soybean oil and soybean oil meal based on the reaction of Fujiwara (5) and Ross (8) and previous work by Gilchrist at Iowa State College (7). The method is based on the observation that pyridine and certain halogenated hydrocarbons react in the presence of sodium or potassium hydroxide to produce a characteristic pink to red color. The intensity of color, between certain limits, is proportional to the concentration of the chlorinated hydrocarbon, all other variables held constant.

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Reaction Kinetics Of The Alcoholysis Of Substituted Benzoyl Chlorides, B. R. Bluestein, Albert Hybl, Yoshimi Al Nishioka Jan 1954

Reaction Kinetics Of The Alcoholysis Of Substituted Benzoyl Chlorides, B. R. Bluestein, Albert Hybl, Yoshimi Al Nishioka

Proceedings of the Iowa Academy of Science

The reaction kinetics of the alcoholysis of substituted benzoyl chlorides was studied. The mechanism of the alcoholysis reaction, which is most generally accepted (1), shows that the overall reaction should be second-order and that the reaction should be first-order with respect to the acid chloride and first-order with respect to the alcohol. This rate study was carried out using a large excess of alcohol as the solvent, thus obtaining pseudo-first order rate constants, first-order with respect to the acid chloride only.

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Cuprous Oxide As A Catalyst. Ii. Adsorption By Cuprous Oxide, R. C. Brown, R. C. Peabody Jan 1954

Cuprous Oxide As A Catalyst. Ii. Adsorption By Cuprous Oxide, R. C. Brown, R. C. Peabody

Proceedings of the Iowa Academy of Science

In a previous paper3, data were presented which demonstrated that cuprous oxide, prepared by the glucose reduction of a cupric nitrate solution at temperatures below 85°, was an active catalyst for the hydrogenation of furfural to furfuryl alcohol. It was also shown that the cuprous oxide was promoted by the addition of calcium oxide and vanadium tetroxidc. The most active mixture contained these oxides in the ratio Cu2O: V204: CaO: : 1.0: 0.71: 1.4. In order to elucidate the role played by the catalyst in the hydrogenation of furfural, the absorptive capacity …

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5,8-Dihydroxyquinoline And Its Nickel Derivatives, Harvey Diehl, Fred H. Lohman Jan 1954

5,8-Dihydroxyquinoline And Its Nickel Derivatives, Harvey Diehl, Fred H. Lohman

Proceedings of the Iowa Academy of Science

Many derivatives of 8-hydroxyquinoline have been prepared and examined, some looking toward increased specificity as precipitating reagents, others toward an increase in the intensity of the color of the metal derivatives. Of the derivatives which have been studied, attention has been centered principally on the alkyl and halogen derivatives on the one hand and on the aromatic azo derivatives on the other. This paper deals with the preparation and properties of an 8-hydroxyquinoline bearing a second hydroxyl group, 5,8-dihydroxyquinoline. In this substance are combined the properties of chelate ring formation with metals and the oxidation-reduction behavior characteristic of the hydroquinones.

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Public High Schools Offering Chemistry In Iowa, James W. Kercheval Jan 1954

Public High Schools Offering Chemistry In Iowa, James W. Kercheval

Proceedings of the Iowa Academy of Science

In a Report on a Survey of Science Instruction in the High Schools of Iowa1, the author presented data based upon reports from 390 or 46% of the 852 senior high schools in Iowa in 1951- 52. Since that time further effort has brought additional data from all but 38 of the present 849 high schools. This leaves but 4.5% unreported at this time. The following report covers data collected over the years 1951 through 1954. The information at hand shows that one semester m more of chemistry is offered either on alternate years or is offered each …

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