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A Mid-Wisconsinan Pollen Diagram From Des Moines County, Iowa, George R. Hallberg, Richard G. Baker, Thomas Legg

Proceedings of the Iowa Academy of Science

Core samples of peat from beneath Wisconsinian loess in Des Moines County, Iowa, were analyzed for pollen. The pollen sequence, dating from 24,900 to 28,720 RCYBP (radiocarbon years before present), was divided into 2 zones based on relative pollen percentages and pollen concentration. Zone B, at the base of the peat, is dominated by Pinus and Picea and is interpreted to represent a closed-coniferous forest, comparable to the modern boreal forest. Zone A, at the very top of the peat, is marked by the decline of Pinus and the increased importance of Picea. This is a regional event which marks …

1908 Old Gold, Iowa State Normal School

UNI Yearbooks

The student yearbook of the Iowa State Normal School, later known as the University of Northern Iowa.

Biennial Report Of The State Normal School At Cedar Falls. School Years 1877-78 Through 1907-08, Iowa State Teachers College

History of Education Book Gallery

No abstract provided.

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

Proceedings of the Iowa Academy of Science

No abstract provided.

Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

Necrology: Charles Aldrich, L. H. Pammel, H. E. Summers, L. S. Ross

Proceedings of the Iowa Academy of Science

No abstract provided.

The Viability Of Weed Seeds Under Different Conditions Of Treatment, And A Study Of Their Dormant Periods, H. S. Fawcett

Proceedings of the Iowa Academy of Science

The viability of a seed is its capacity to live after maturity, and its dormant period is the time required for the seed to germinate after being planted. A great deal of investigation has been carried on for many years past to determine the viability of seeds; more especially of cultivated seeds of the farm and garden, but not so much attention has been given to weed seeds. In 1897 Mr. C. R. Ball of this college published an article on "Seed Testing; Its Importance, History and Some Results, With a Partial Bibliography." This article contains a long and valuable …

The Genesis Of Loess: A Problem In Plant Ecology, B. Shimek

Proceedings of the Iowa Academy of Science

The question of the origin of the loess of the Mississippi valley has attracted the attention of the geologists of the country for two-thirds of a century. The consideration of the question has been left almost entirely to geologists, who have offered various explanations of loess-formation, all based practically on physical grounds.

A Hybrid Oak, B. Shimek

Proceedings of the Iowa Academy of Science

The northern limit of the distribution of Quercus imbricaria Michx. and Quercus palustris Muench, in the valley of the Iowa River is reached near Hills in Johnson County. Here and southward both species occupy the alluvial bottom lands, and before the extensive clearing of the alluvial forests they were freely intermingled. In view of this fact and of the well-known tendency of oaks to hybridize it is not surprising that forms which are evidently hybrids occur.

Notes On Peronosporales For 1907, Guy West Wilson

Proceedings of the Iowa Academy of Science

Among the problems in the life history of the Peronosporales two important and interesting ones have received far less attention than they deserve. These are (1) the interrelation of meteorological conditions and the abundance and development of these fungi (2) the location of centers of seasonal distribution. While these problems have attracted the attention of a number of mycologists, they are of such a nature as to necessitate a series of observations extending over a term of years in a given locality and at the same time to require the cooperation of observers in localities widely separated in space and …

The Uric Acid Ferments, Elbert W. Rockwood

Proceedings of the Iowa Academy of Science

Within a few years our knowledge of the formation and destruction of uric acid in the body has been much broadened. For a long time after its isolation its origin, significance, place of formation and the agents active in its production and decomposition were unknown. In these respects the facts differ much in the cases of birds and mammals and only the cases of mammas will be here considered.

The Decomposition Of Dolomite, Nicholas Knight

Proceedings of the Iowa Academy of Science

The dolomites of Iowa and other sections of the country, belonging to the Niagara period of the Upper Silurian, in the course of centuries apparently undergo decomposition. The rock loses its massive structure and becomes crumbly and mealy in appearance. In the vicinity of Mount Vernon, Iowa, the top layer to a depth of 3 or 4 inches seems to be quite thoroughly disintegrated and powdery. The same phenomenon is observed in lower strata where a layer projects, by which it is especially exposed to the elements. A similar disintegration is observed in many other localities.

The Life Of Portland Cement, G. G. Wheat, A. J. Wheat

Proceedings of the Iowa Academy of Science

Perhaps just a word in explanation of the title of this paper will not be amiss. We speak of Portland Cement as possessing life. We do this because the duration of its existence as Portland Cement is measurable. In contradistinction we might speak of a material such as the Sioux Falls Quartzite as being dead, since no appreciable change takes place in the body of this Quartzite, all of the elements of the Quartzite being practically at a state of rest and resisting all disintegration by the ordinary weathering agencies. Perhaps our distinction may be somewhat arbitrary and we cheerfully …

The Loess Of The Paha And River-Ridge, B. Shimek

Proceedings of the Iowa Academy of Science

The term paha was first applied to isolated knobs and ridges within what we now know as the Iowan drift border by McGee, who refers to them as "loess-capped eminences, sometimes elongated to ridges miles in length, sometimes shortened to elliptical hills," and again describes the individual paha as an "elongated swell of soft and graceful contour, standing apart on the plain or else connected with its fellows sometimes in long lines, again in congeries, and locally merging to form broad loess plateaus."

Protective Adaptations In The Nesting Habits Of Some Central American Birds, Morton E. Peck

Proceedings of the Iowa Academy of Science

To the general rule that the struggle for existence among plants and animals is sharper and more exacting in the tropics than in cooler parts of the earth, birds form no exception. Moreover, so far at least as the region we are about to consider is concerned, the unfavorable or hostile elements in the environment of tropical birds differ greatly in kind or in proportion from those that must be provided against by birds of temperate climates. We should, therefore, expect to find a strongly marked difference between the habits, particularly the breeding habits, of the birds of the two …

Revival Of An Old Method Of Brain Dissection, H. J. H. Hoeve

Proceedings of the Iowa Academy of Science

All authors seem to agree that the brain must be hardened by some method in order to be fit for dissection, as far as its fibers are concerned. Some have boiled the brain in oil (Spurzheim, 1834), and others have used chromic acid solution for the same purpose (Hyrtl, 1857). Some years ago zinc chloride was in general use for that purpose and of late nearly everyone uses formaldehyde, 40 per cent diluted. I have employed formaldehyde in a 2 per cent solution, changed every day until the fifth day, when I put the brain in a 5 per cent …

Nucleations According To Barus, L. Begeman

Proceedings of the Iowa Academy of Science

No doubt all students of science have read more or less about Barus' work on condensation phenomena as produced in a specially constructed fog chamber. As is known, his work has been done under the direction of the Carnegie Institution of Washington, founded particularly for the solution of research problems, involving much time and considerable expense. The prime purpose of his work, so far as I can interpret it, is to determine the part played by various kinds of nuclei in the atmospheric condensation of vapor. This, of course, is a very interesting problem to the student of physiography, as …

Program, Iowa State Normal School, Fall Term, 1907, Iowa State Normal School

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 Normal School.

Program, Iowa State Normal School, Summer Term, 1907, Iowa State Normal School

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 Normal School.

Commencement Addresses, June 12, 1907, Iowa State Normal School

UNI Commencement Programs

Information relating to events associated with commencement ceremonies at the Iowa State Normal School.

College Catalog And Circular 1907-1908, Iowa State Normal School

UNI Programs and Courses Catalogs

Table of Contents:

State Board of Control ... 3
Calendar for 1907-1908 ... 4
Faculty ... 6
Organization of the Work ... 16
Organization of the Faculty ... 19
Rules and Regulations of the Board of Trustees and Faculty ... 23
Faculty Regulations ... 28
Expenses and Fees ... 36
Literary Societies ... 39
Special Certificates ... 41
Public Lectures and Entertainments ... 44
Boarding and Lodging ... 46
The Training Department in Actual Teaching ... 49
Teachers' Certificates ... 54
Regulations Concerning the Management of Work ... 59
Conditions of Admission ... 70
Plan and Details of the Full …

Summer Term, 1907, Iowa State Normal School

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 Normal School.

Notes On The Algae Of Iowa, Robert Earle Buchanan

Proceedings of the Iowa Academy of Science

The first definite mention of Iowa Algae which has come to our notice is that published by Dr. C M. Hobby in the Proceedings of the Iowa Academy of Science. His list comprises some twenty-seven genera and seventy-four species and varieties. The list is prefaced as follows: "The species given below were mainly collected in the immediate vicinity of Iowa City. I am greatly indebted to Rev. Francis Wolle, of Bethlehem, Pennsylvania, for assistance in the study and identification of these plants. The classification used is that of Kirchner in "Algen von Schlesien, Breslau, 1878." The list comprises an unusually …

Program, Iowa State Normal School, Winter Term, 1906-07, Iowa State Normal School

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 Normal School.

Recent Alluvial Changes In Southwestern Iowa, J. E. Todd

Proceedings of the Iowa Academy of Science

The region specially discussed in this paper is about five square miles in the northwest corner of Fremont County, Iowa, which is the southwest county of that State. It lies mostly on the bottom lands of the Missouri River. It is bounded on the east by a tableland rising abruptly in steep bluffs cut by deep ravines. These bluffs rise 250 to 300 feet above the plain and are composed mainly of yellowish loam, typical loess. This yields easily to erosion especially when water soaked. At such times, its cementing lime, which when dry holds it firm like a soft …

A Study Of The Variation Of The Number Of Ray Flowers Of Certain Compositae, Winfield Dudgeon

Proceedings of the Iowa Academy of Science

The study of the variation of the ray flowers of Rudbeckia hirta (cone flower) was taken up during the summer of 1906, at the suggestion of Dr. L. H. Pammel. The object of the study was to determine the amount of variation of the ray flowers, the variation for different localities, and any other facts that could be determined. Later, a study of Rudbeckia triloba and Helianthus grosse-serratus was taken up, with the same end in view, and that the different species might be compared.

1907 Old Gold, Iowa State Normal School

UNI Yearbooks

The student yearbook of the Iowa State Normal School, later known as the University of Northern Iowa.

A Catalogue Of The Poisonous Plants Of Iowa, L. H. Pammel, Estelle D. Fogel

Proceedings of the Iowa Academy of Science

For a number of years we have given a course of lectures on plants poisonous and injurious to live stock to the veterinary students of the Iowa State College. From stockmen and farmers in various parts of the state we frequently receive queries in regard to poisonous plants. In some cases the queries are accompanied with specimens. We are often asked to give more detailed information. In many cases, however, the evidence of poisoning is not proven; certain weeds are found in a pasture and the farmer supposes that they may be responsible for the death of animals.

Securing A Stand Of Clover On The Southern Iowa Loess, E. B. Watson

Proceedings of the Iowa Academy of Science

At the Sub-station at Leon, Decatur County, conducted by the Soil Section of the Iowa Experiment Station, clover was sown on the series of oat plots in the spring of 1905, some of the plots being treated with stable manure. It was noted during the season that the manured plots had the best stand, and much the best growth of clover. This is not a new discovery, but the cause seems to be a matter of speculation and conjecture. Clover is an important crop in Iowa, and is especially needed in that part of the State to supply lost humus …

The Loess Of The Missouri River, B. Shimek

Proceedings of the Iowa Academy of Science

No obstacle has presented itself more persistently in the way of those who have attempted to explain the formation of loess deposits by aqueous or glacial agencies, than the presence of the remains of strictly terrestrial mollusks in the deposits.