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

Proceedings of the Iowa Academy of Science

No abstract provided.

Proceedings Of The Thirty-Eighth Annual Meeting Of The Iowa Academy Of Science, Held At Ames, May 2 And 3, 1924: Minutes Of The Meeting; Staff & Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

The Iowa Academy Of Science (Paper Presented At The Thirty-Eighth Annual Meeting Of The Iowa Academy Of Science), D. S. Fairchild

Proceedings of the Iowa Academy of Science

In the early days of Iowa, not pioneer days, or building home days, but after homes had been assured, educational interests began to develop. As early as 1872 our higher institutions of learning, the Iowa State University at Iowa City and the Iowa State College at Ames, had but small facilities and the men teaching different branches, to a degree, confined their work to a specialty. There were no professors teaching natural philosophy, or natural history, which included all animal and vegetable life, as in so many of the old time colleges. In about 1880 or earlier, both the University …

Bios, A Resumé, Ellis I. Fulmer

Proceedings of the Iowa Academy of Science

The development of the work on Bios was discussed by considering some typical contributions grouped as indicated below.

Some Winter Flowering Plants, R. W. Poulter

Proceedings of the Iowa Academy of Science

While collecting native specimens for a herbarium during the fall of 1923, it was noticed that several species bloomed quite late, and would stand freezing and thawing time after time, without apparent damage to the flowers. A geranium which was left out of doors in a flower pot, and lived until the latter part of December, aroused our curiosity as to just how much cold weather some plants would stand.

Diet In Relation To Reproduction And Rearing Of Young, L. T. Anderegg

Proceedings of the Iowa Academy of Science

Any information which aids in securing an answer to the question as to what constitutes an optimum diet is of the utmost importance. The employment of the biological method of investigation has been exceedingly fruitful of results in this field. By this method the diet is submitted to actual feeding tests with experimental animals and their behavior thereon is observed. For this purpose the rat is most frequently employed on account of its relatively small food consumption, its omniverous habit, and its comparatively short reproductive cycle and span of life. It is thus possible to get the life histories of …

The Differential Death-Rate Of The Sexes Among Animals, With A Suggested Explanation, S. W. Geiser

Proceedings of the Iowa Academy of Science

It has been conclusively demonstrated in certain mammals, fishes, arthropods, nematodes and mollusks that the female sex has a greater longevity than the male. (Geiser, '21, '23; et al.) Longevity within the species appears to be inherited in the manner of "blending inheritance," i.e., its mode of inheritance is probably through a series of multiple gametic factors. (Beeton & Pearson, '00, '01; Pearl, Parker & Gonzalez, '23; Gonzalez, '23.)

Results Of The Testing Program Given At Iowa State College, Nora M. Klise

Proceedings of the Iowa Academy of Science

The results given in this report were based upon a study of 368 Home Economics students who had been given mental tests in the spring and fall of 1919. 145 of the 368 had been given Alpha mental test, and 223, Thorndike. High school records were available for 339 of them. The object was to study criteria for prediction of college scholarship. Alpha had the highest correlation with college average, 0.45 as compared with 0.34 for high school with college average, and 0.38 for Thorndike with college average. English had the highest correlation, with college average (0.59) of any individual …

Birds Of Wapello County, Iowa, Chas. J. Spiker

Proceedings of the Iowa Academy of Science

Wapello County is located in the southeast part of Iowa with one county between it and the Iowa-Missouri line and three counties east of it between it and the Mississippi river. It is bounded on the north by Mahaska and Keokuk Counties, on the east by Jefferson County, on the south by Davis County, and on the west by Monroe County. Its county seat is Ottumwa. The Des Moines River flows diagonally across the county from northwest to southeast. It is quite heavily timbered for most of its course, affording an excellent route for the migration of birds common to …

The Alumni News Letter, V7n4, October 1, 1923, Iowa State Teachers College

The Alumni News Letter

Contains news of the College and its alumni.

Iowa State Teachers College Program Of Recitations, Fall 1923, 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.

The Banana Snake Boa Imperator, J. E. Guthrie

Proceedings of the Iowa Academy of Science

The snakes of the family Boidae are mainly confined to tropical countries in their distribution. There are two subfamilies, the true Boas and the Pythons; of which the Boas belong to the Western Hemisphere and the Pythons almost exclusively to the Old World-a single species of the latter being found in Mexico. Of the true Boas, only four species are known to occur in North America, and these are all small. One of these species is found in the states of the Pacific Coast, ranging from Washington southward. It is known as the "Rubber Boa" and seems to be a …

Some Polypores In Henry County, Mary Carnahan

Proceedings of the Iowa Academy of Science

The polypores, commonly called Bracket Fungi, are woody or tough and in the forms of brackets of various shapes and sizes. There are three classes of fungi, the third being the Basidiomycetes. Under this class there is a subclass, the Eubasidii, which contains the order Agaricales and the family Polyporaceae. Several months as occasion afforded were spent in collecting polypores in Henry County, Iowa, within a ten mile radius of Mt. Pleasant.

Some Food Reactions Of Snails, E. W. Johns

Proceedings of the Iowa Academy of Science

The following work was done at the University of Chicago Zoological Laboratory under the supervision of Dr. W. J. Crozier to investigate primarily the method of innervation of the food reflex. For the studies, various forms of common snails were experimented with, but the domestic snail known as the Singapore was used for most of this work because of its ready availability and suitableness for the work due to its large size, activity and omniverousness. The main objection to them is that they do not swim on the surface of the water as do many forms. In order to obviate …

In Memoriam: Gustavus Detlef Hinrichs; James Edward Todd, Charles Keyes

Proceedings of the Iowa Academy of Science

No abstract provided.

Some Conditions Affecting Tree Growth As Revealed By The Annual Rings, Max W. Van Horn

Proceedings of the Iowa Academy of Science

The stump which is left when a tree is cut reveals a number of things about its rate of growth and the conditions which have affected its development. During the fall of 1922 and the spring of 1923 the writer measured the surfaces of a number of these and counted their annual rings for the purpose of comparison, and to discover, if possible, some conditions governing their growth rates.

College Circular [Catalog] 1923, Iowa State Teachers College

UNI Programs and Courses Catalogs

Table of Contents

Calendar for 1923-24 ... 5
Officers of Administration and Instruction ... 6
General Information ... 35
Residence, Student Health, Assembly ... 36
Expenses and Fees ... 36
Free Scholarships ... 38
Extension Service ... 38
College Organizations ... 39
Faculty Organizations ... 40
Training in Actual Teaching ... 40
Public Lectures and Entertainments ... 41
Boarding and Lodging ... 41
Employment of Students ... 42
Twelve Weeks Normal Training ... 42
School Credits in Lieu of Certificate Examinations ... 43
Examinations for Teachers Certificates ... 43
Department Certificates ... 44
Bureau of Recommendations ... 44
Advisers and …

The Genus Empoasca In North America, Albert Hartzell

Proceedings of the Iowa Academy of Science

While the writer was connected with the Iowa Agricultural Experiment Station the potato leafhopper (Empoasca mali) appeared in immense numbers in the Upper Mississippi Valley. Investigations were carried on during the summers of 1919, 1920 and 1921 at Ames, Iowa, to establish definitely the relation of this insect to the disease it transmits, commonly called tipburn or hopperburn of potatoes, which was causing severe damage to the potato crop, and if possible devise means for its control. The difficulty experienced in separating closely related species of Empoasca, which had been confused by former investigators, led to the desire to trace …

A Zoological Park In New Zealand, Dayton Stoner

Proceedings of the Iowa Academy of Science

The University of Iowa Expedition to the South Seas participated in by six persons from that institution between May 14 and September 4, 1922, was undertaken largely for the purpose of making biological and geological collections and field observations. More than 17,000 miles were traversed of which something over 12,000 were by water. Of the total elapsed time-approximately 112 days-forty-five were spent in travel, after leaving the American continent, for the purpose of arriving at and returning from our objectives, Viti Levu of the Fiji Islands, where four weeks were spent, and the Dominion of New Zealand, where about …

Food Of The Short-Nosed Gar-Pike (Lepidosteus Platystomus) In Lake Okoboji, Iowa, George E. Potter

Proceedings of the Iowa Academy of Science

The food habits of any animal have a distinct bearing upon its life and so it is with the Gar-pike. In order to ascertain the kind and amount of food taken by this fish, many collections were made, stomachs dissected, the contents carefully examined and preserved.

Plants And The Surface Film Of Water, Robert B. Wylie

Proceedings of the Iowa Academy of Science

The plant's uses of water are many. As a solvent water permits the absorption of raw materials of all kinds taken in by the plant. Within the plant body water performs many functions, some of it even entering into the constitution of the protoplasm itself. In leaving the plant in the form of vapor its evaporation cools the tissues when otherwise they might at times be injured by the radiant energy of the sun to which extensive portions of the plant must he exposed for photosynthesis. The familiar root-shoot type of land vegetation is the form-response of plants to the …

The Terrestrial Isopods Of Iowa, Mayne Longnecker

Proceedings of the Iowa Academy of Science

A careful study of Miss Harriet Richardson's Monograph on the Isopods of North America (Bulletin 54, United States National Museum) shows only eleven species of what are commonly called sowbugs and pillbugs that might reasonably be expected to live in this region, judging from the latitude and climate in which they have previously been found.

1923 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.

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

Proceedings of the Iowa Academy of Science

No abstract provided.

Proceedings Of The Thirty-Seventh Annual Meeting Of The Iowa Academy Of Science, Held At Mount Vernon, April 27 And 28, 1923: Minutes Of The Meeting; Staff & Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

Comparative Rates Of Oxygen Consumption In Marine Forms, Francis M. Baldwin

Proceedings of the Iowa Academy of Science

The present paper presents data gathered by the writer in a study made on the rate of oxygen consumption in some of the marine fishes and invertebrates, and gives additional weight to a report by Professor Scott before the Society of Experimental Biology, XII, pp. 146-147.

Notes On Introduced Plants, Robert B. Wylie

Proceedings of the Iowa Academy of Science

Unexpected results frequently follow the introduction of plants and animals into new regions. The transplanted organism often shows unusual vigor and may become a disturbing factor in the new home where it may not even perform the intended service. Since the introduced form frequently leaves behind its worst enemies or chief competitors it sometimes develops amazingly in the new environment.

Methods Of Modeling The Agaricaceae, Kathryn Gilmore

Proceedings of the Iowa Academy of Science

As it is practically impossible to preserve the fleshy fungi in any way to retain their original shape and color, the following plans were developed in making a collection of models for Iowa Wesleyan College.

Behavior Of Trapped And Banded Birds, Dayton Stoner

Proceedings of the Iowa Academy of Science

In the course of certain bird-banding activities which I have been carrying on during the past several months, opportunity has been afforded for the observation and comparison of the behavior of a limited number of birds, both adult and young. And it is of some interest to note the different ways in which these "feathered bipeds" conduct themselves under the unusual conditions during and subsequent to the unlooked for disturbances connected with the operation of banding.

College Catalog And Circular 1922, Iowa State Teachers College

UNI Programs and Courses Catalogs

Table of Contents

Calendar for 1922-23 ... 5
Officers of Administration and Instruction ... 6
General Information ... 33
Residence, Student Health, Assembly ... 37
Expenses and Fees ... 37
Free Scholarships ... 39
Extension Service ... 39
College Organizations ... 40
Faculty Organizations ... 41
Training in Actual Teaching ... 41
Public Lectures and Entertainments ... 41
Boarding and Lodging ... 42
Employment of Students ... 43
Twelve Weeks Normal Training ... 43
School Credits in Lieu of Certificate Examinations ... 44
Examinations for Teachers Certificates ... 44
Department Certificates ... 44
Bureau of Recommendations ... 45
Degree Curriculums …