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Lichens And Recent Conceptions Of Species, Bruce Fink

Proceedings of the Iowa Academy of Science

The biological atmosphere is pregnant with ideas regarding species and their evolution. We are brought face to face with the "fluctuation" view of Darwin and the more recent one of "discontinuous variation" of Bateson, later called "fluctuation" by de Vries. Pangenesis has received prominent attention in the discussions regarding evolution; and Weismann formerly thought that germinal selection accounted for all evolution though, in his recent work in two volumes, he admits that conditions of environment may affect the soma when acting continuously through many generations. Another extreme view is that expressed by Jordan in a recent number of "Science", to …

Proceedings Of The Twentieth Annual Session Of The Iowa Academy Of Sciences: Staff & Committee Reports, L. S. Ross

Proceedings of the Iowa Academy of Science

No abstract provided.

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

Proceedings of the Iowa Academy of Science

No abstract provided.

Action Of Bromic Acid On Metals, W. S. Hendrixson

Proceedings of the Iowa Academy of Science

About two years ago I submitted to the Iowa Academy of Science a communication on the action of chloric acid on metals, in which it was shown that in some cases the metals dissolved without the evolution of any gas, the action apparently being the oxidation of the metal and the immediate formation of salts from the oxides and the excess of chloric acid, and the hydrochloric acid produced by the reduction of chloric acid. In the cases of some metals there occurred at the same time oxidation of the metal and the evolution of free hydrogen. In fact, in …

Logarithmic Factors For Use In Water Analysis, W. S. Hendrixson

Proceedings of the Iowa Academy of Science

Every chemist who does work in the analysis of water frequently has occasion to calculate over data given in terms of compounds and grains per gallon, to ions per liter or parts per million. Frequently he must carry out the reverse processes and convert his ions per liter into grains of compounds per gallon in order to make his results more comprehensible to the non-technical mind. Such operations are likely to be vexatious and time-consuming.

Some Variant Conclusions In Iowa Geology, J. E. Todd

Proceedings of the Iowa Academy of Science

Having been a resident in southwestern Iowa for many years and conversant with several localities in the state of geological interest, the writer has naturally followed closely the publications of the present survey treating of them. In casting about for a subject for some different conclusions which had come to his mind, he thought first of "corrections and additions", but as that savored rather of too much self-assurance the milder form was preferred. Since the writer does not arrogate superior knowledge in the cases, he would simply state his views and leave them to whatever acceptance they may deserve.

More Light On The Origin Of The Missouri River Loess, J. E. Todd

Proceedings of the Iowa Academy of Science

My excuse for offering another paper on this well-worn subject is my recently acquired familiarity with a deposit of Lake Dakota, which closely resembles loess, in structure and composition, and in its relations to underlying till and to recent channels. In short it seems to be a more recent and less extensive formation of the same sort. The resemblances are so striking and its fluvio-lacustrine origin so unquestioned that a similar origin for the loess of the Missouri is strongly suggested.

Alternation Of Fossil Faunas, Charles R. Keyes

Proceedings of the Iowa Academy of Science

Several years ago while studying the coal measures of Iowa and the neighboring states, it was suggested in a general way that the so-called Lower Coal Measures and the so-called Upper Coal Measures eventually might prove to be essentially contemporaneous.

A Contribution To Madison County Geology, F. A. Brown

Proceedings of the Iowa Academy of Science

There is given below a typical or general section of the Missourian formation in Madison County, as given by Tilton and Bain. It is mainly to the rocks of this stage that reference will be made in the present paper.

A Study Of A Portion Of The Iowan Drift Border In Fayette County, Iowa, Grant E. Finch

Proceedings of the Iowa Academy of Science

When a boy, living on the border between the Iowan and the Loess-Kansan drift sheets, the great difference between the two regions was very apparent to me then, and now, in the light of the extensive and interesting contributions to glacial geology in recent years, it is a pleasure to take a geological review of the scenes of my boyhood. It is my purpose to make a few observations relating to the Iowan drift border in Fayette county, Iowa, in particular the region between West Union and Fayette.

Cyclonic Distribution Of Precipitation, J. A. Udden

Proceedings of the Iowa Academy of Science

Several years ago I devised a method for ascertaining statistically the relation of weather conditions to different parts of a cyclone for a certain locality or limited region of territory. Some results obtained by this method seem worth the while recording.

Studies Of The Collembolan Eye, J. E. Guthrie

Proceedings of the Iowa Academy of Science

In any primitive group of animals, there is an unusual interest attached to any organ which shows a simple structure, as having a possible bearing upon the history of the organ in a more highly specialized condition, as found in higher, closely related groups. Sometimes organs of seemingly simple structure are very puzzling from the fact that we are at a loss to determine whether their condition is primitive, or is due to degradation or partial atrophy. Embryological studies are often of value in determining the case, But not always. In entomology we have surprisingly few embryological studies which are …

Relation Of The Motor Nerve Endings To Voluntary Muscle In The Frog, B. A. Place

Proceedings of the Iowa Academy of Science

This is a subject upon which most authorities differ widely, and few, if any, agree upon all points entirely. It is therefore, an inviting field tor research. Because of the extreme diversity of opinions current it has seemed best to me to formulate them in a brief way before giving the results of my own observations.

Food Of Subterranean Crustacea, L. S. Ross

Proceedings of the Iowa Academy of Science

Supply of food and demand for it is one of the important factors to be considered in the struggle for existence, a factor that insistently demands proper attention on the part of every organism in its solution of the problem whether it shall exist or shall not. Many students have observed, many have killed and dissected hundreds and thousands of animals in determining what is the character of the food supplies of various species living in the water above ground, and on the surface of the earth, but not many it seems have entered seriously into the determination of the …

College Catalog And Circular 1904-1905, Iowa State Normal School

UNI Programs and Courses Catalogs

Table of Contents:

State Board of Control ... 3
Calendar for 1905-1906 ... 4
Faculty ... 6
Organization of Faculty ... 14
Method of Enrollment ... 17
Rules and Regulations of the Board of Trustees and Faculty ... 18
Faculty Regulations and Directions ... 23
Expenses and Fees ... 30
Literary Societies ... 33
Special Certificates ... 35
Public Lectures and Entertainments ... 38
Moral and Religious Influences ... 40
Boarding and Lodging ... 41
The Training Department in Actual Teaching ... 43
Program of Studies ... 49
Elementary Division ... 61
Conditions of Admission to Regular Courses ... 62 …

Program, Iowa State Normal School, Spring Term, 1905, 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.

Summer Term, 1905, 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.

1905 Normal Eyte Annual, Iowa State Normal School

UNI Yearbooks

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

Program, Iowa State Normal School, Winter Term, 1904-05, 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.

Variation In Ray Flowers Of Anthemis Cotula And Other Composites, H. S. Fawcett

Proceedings of the Iowa Academy of Science

The object of this study was to determine the amount of variation occurring in the number of ray flowers of the Mayweed (Anthemis cotula L.), to compare the variations occurring in different localities, and also the variations in different plants of the same locality, and finally to compare this variation with that of a few other species of Compositae.

Iowa, The First Free State In The Louisiana Purchase, William Salter

Iowa Book Gallery

A history of Iowa through 1846.

Program, Iowa State Normal School, Fall Term, 1904, 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.

July Class Day, 1904, Iowa State Normal School

UNI Commencement Programs

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

Program, Iowa State Normal School, Summer Term, 1904, 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.

College Catalog And Circular 1903-1904, Iowa State Normal School

UNI Programs and Courses Catalogs

Table of Contents:

State Board of Control ... 3
Calendar for 1904-1905 ... 4
Faculty ... 6
Faculty Organization ... 14
Buildings and Equipment ... 16
Rules and Regulations of the Board of Trustees and Faculty ... 18
Faculty Regulations and Directions ... 26
Elementary Division ... 31
High School Graduate Division ... 40
Professional Courses of Study ... 56
Primary Teachers' Courses ... 62
Expenses and Fees ... 80
Boarding and Lodging ... 88
The Course of Study ... 91
Register of Students 1903-04 ... 149
Photo - Administration Building ... 205

Program, Iowa State Normal School, Spring Term, 1904, 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.

Eighth Annual Session Of The Summer Term, 1904, 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.

Apparatus For Plating Out Petri Dishes In The Field, L. S. Ross

Proceedings of the Iowa Academy of Science

For some time bacteriologists interested in water or sewage analysis have realized the fact that for determining the number of bacteria per c.c. the water should be plated as soon as possible after it has been collected. If the samples are collected at some distance from the laboratory, recourse is had to packing in ice, which is always cumbersome and sometimes very inconvenient. Even then results will not be so accurate as those obtained by plating immediately after collecting. Various attempts have been made to plate dishes in the field, I believe without very satisfactory results, until last summer when …

Some Notes On Certain Iowa Algae, Bruce Fink

Proceedings of the Iowa Academy of Science

Aside from the list by Bessey in 1884, the few algae mentioned by Shimek (Proc. Ia. Acad. Sci. 4:80, 1896), and the article on diatoms by Myers (Proc. Ia. Acad. Sci. 6:47, 1898.) the present writer finds nothing in print regarding the algae of Iowa. Surely this condition is not due to the fact that algae have not been observed frequently enough, for the plants are so interesting that the student of aquatic flora always stops to study them as thoroughly as time at hand will permit.

History Of Black Hawk County, Iowa, And Representative Citizens, Isaiah Van Metre

Iowa Book Gallery

This book provides a history of Black Hawk County, Iowa, from its settlement in 1834 through the book's publication in 1904. Numerous biographical entries and portraits are included.