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The Effect Of Heavy Rains On The Orthoptera (Grasshopper) Population Of The Prairie, George O. Hendrickson Jan 1933

The Effect Of Heavy Rains On The Orthoptera (Grasshopper) Population Of The Prairie, George O. Hendrickson

Proceedings of the Iowa Academy of Science

The general interest created by destructive grasshoppers in the past few years incited the author to some studies on populations of Orthoptera, particularly on prairie patches in Iowa. Correlations of the data with climatic information will be made at times to yield possibly valuable results.

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In Memoriam: Frank Fayette Almy; Ervin E. Reed; William E. Albert; Frank W. Paige; Arthur Gray Leonard; Winfield Scott Dudgeon; Max E. Witte; Royal Edgar Jeffs; H. Gregg Smith, H. W. Norris, Charles Reuben Keyes, Katherine Mauthe, J. N. Martin, T. J. Maney, John A. Yarbrough, H. A. Mattill Jan 1933

In Memoriam: Frank Fayette Almy; Ervin E. Reed; William E. Albert; Frank W. Paige; Arthur Gray Leonard; Winfield Scott Dudgeon; Max E. Witte; Royal Edgar Jeffs; H. Gregg Smith, H. W. Norris, Charles Reuben Keyes, Katherine Mauthe, J. N. Martin, T. J. Maney, John A. Yarbrough, H. A. Mattill

Proceedings of the Iowa Academy of Science

No abstract provided.

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Some Biological Contributions To Recreation (Address Of The President), H. E. Jaques Jan 1933

Some Biological Contributions To Recreation (Address Of The President), H. E. Jaques

Proceedings of the Iowa Academy of Science

To my memory comes the scene of a little group of college students nearing the end of a long morning tramp through the tall dew wet grass of early spring. We were out on a bird trip and had gone several miles through the woods. The physical condition of the little company would not be expected to inspire enthusiasm. As we reached the city park and found still more warblers breakfast gathering in the trees, one of the young women cried out with an exultation never to be forgotten, "Oh! I know I shall enjoy this all my life."

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Studies On Regeneration Of Hemoglobin, H. L. Keil, Victor E. Nelson Jan 1933

Studies On Regeneration Of Hemoglobin, H. L. Keil, Victor E. Nelson

Proceedings of the Iowa Academy of Science

Many investigators in the past few years have been interested in the problem of the relation of iron to anemia. This problem originated in connection with studies involving a comparison of inorganic versus organic iron, which later led to studies on the relation of solubility of iron compounds to regeneration of hemoglobin and the treatment of anemia.

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The Role Of Liver In Growth, Reproduction And Lactation, H. Gregg Smith, Walter H. Seegers Jan 1933

The Role Of Liver In Growth, Reproduction And Lactation, H. Gregg Smith, Walter H. Seegers

Proceedings of the Iowa Academy of Science

Alcohol-extracted beef liver was fed to albino rats as the only source of protein in a ration adequate in the recognized factors necessary for normal nutrition, the vitamins being supplied by yeast, cod liver oil and hydrogenated cottonseed oil (Crisco) ; the latter furnished the fat of the basal diet. The ration was found to be inadequate for optimum growth, reproduction and lactation. Supplementing the basal diet with 0.5 g. of raw liver or replacing the extracted-liver of the basal diet with whole dried liver greatly increased the growth rate and improved lactation.

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The Availabilty Of Indole Derivatives For Supplementing Diets Derivatives In Tryptophane, Lyle C. Bauguess, Clarence P. Berg Jan 1933

The Availabilty Of Indole Derivatives For Supplementing Diets Derivatives In Tryptophane, Lyle C. Bauguess, Clarence P. Berg

Proceedings of the Iowa Academy of Science

Interest in the possibility of replacing essential amino acids in the diet with synthetic products more or less closely related in chemical structure has led us to synthesize β -3-indoleacrylic acid and α-oximino-β-3-indolepropionic acid and feed them to rats in conjunction with a diet deficient in tryptophane. Reports in the literature on the availability of β-4-imidazoleacrylic acid in supplementing diets deficient in histidine are conflicting. No α-oximino acid has been studied in this connection. The oxime of pyruvic acid, however, has been shown to undergo reduction, in the presence of vigorously fermenting yeast, to alanine.

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Steric Hindrance As A Factor In The Hydrolytic Stability Of Aromatic Ketimines, J. B. Culbertson, Rachel Albright, Drew Baker, Paul Sweitzer Jan 1933

Steric Hindrance As A Factor In The Hydrolytic Stability Of Aromatic Ketimines, J. B. Culbertson, Rachel Albright, Drew Baker, Paul Sweitzer

Proceedings of the Iowa Academy of Science

A comparison of the velocities of hydrolysis of the 2-, the 3- and the 4-methyl diphenyl ketimine hydrochlorides, in which the velocity of the first is very much slower than either of the other two, suggests steric hindrance. The very slow rate of hydrolysis of 2, 4, 6-trihydroxy diphenyl ketimine hydrochloride has been reported by one of us. This slow rate may be accounted for on the basis of the multiple opportunities for tautomerism involving the very stable enamine forms. We have recently found 2-methyl, 4, 6-dihydroxy di phenyl (orcinyl phenyl) ketimine hydrochloride to be even more slowly hydrolyzed. It …

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The Determination Of Manganese In Biological Material, Norman Ashwell Clark Jan 1933

The Determination Of Manganese In Biological Material, Norman Ashwell Clark

Proceedings of the Iowa Academy of Science

One of the best methods for the determination of manganese in very small amounts in biological material is the adaptation of Willard's oxidation of the Mn in acid solution by KIO4 , and a comparison in Nessler tubes of the color produced, with a known standard similarly treated. Skinner and Peterson showed that if animal tissue was ashed in a muffle furnace and extracted with H2PO4 , the KIO4 oxidized the Mn in the solution without loss of color. They found 0.01 mg Mn in 50 cc. solution gave a readable color in Nessler tubes against an …

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The Purple Pen, Volume 5, Number 1, November 1932 [Download Entire Issue] Nov 1932

The Purple Pen, Volume 5, Number 1, November 1932 [Download Entire Issue]

Purple Pen

No abstract provided.

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Nobody Leaves, Edna Flamme Nov 1932

Nobody Leaves, Edna Flamme

Purple Pen

No abstract provided.

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Iowa State Teachers College Program Of Recitations, Fall 1932, Iowa State Teachers College Oct 1932

Iowa State Teachers College Program Of Recitations, Fall 1932, 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 Purple Pen, Volume 4, Number 3, May 1932 [Download Entire Issue] May 1932

The Purple Pen, Volume 4, Number 3, May 1932 [Download Entire Issue]

Purple Pen

No abstract provided.

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Bonds, Helen C. Anderson May 1932

Bonds, Helen C. Anderson

Purple Pen

No abstract provided.

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The Place Of The Green Leaf In The World, C. W. Lantz Apr 1932

The Place Of The Green Leaf In The World, C. W. Lantz

Science Bulletin

Why is a leaf? Ask the question of twenty-five of your friends and if five can give the correct answer I will be surprised. The green leaf is the food factory for the world. It is the plant organ that captures the energy of the sun and in the process of photosynthesis builds of carbohydrates from carbon dioxide and water and stores this energy in potential form. Later, through oxidation processes, this energy is released and does most of the work of the world. The green plant connects the inorganic world with the organic world and our energy is directly …

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Colloids, R. W. Getchell Apr 1932

Colloids, R. W. Getchell

Science Bulletin

The increasing importance of the chemistry of colloids is giving them a wide recognition in the general chemistry texts of college grade. In a lesser degree they are included in the high school books but the information is often so condensed as to offer little of value. The writer believes that two or three class periods near the end of the year's course should be devoted to this subject and this article will attempt to present basic fact upon which may be built a discussion of colloids for high school pupils.

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Science Bulletin, Vol.4 No.8, April 1932 [Complete Issue] Apr 1932

Science Bulletin, Vol.4 No.8, April 1932 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Concerning Cottontails, Roy L. Abbott Apr 1932

Concerning Cottontails, Roy L. Abbott

Science Bulletin

The cornfield lay above a low bluff overlooking a swamp, and for half an hour I had tracked that cottontail through a perfect maze of weeds and cornstalks. Warming with the chase, I was determined to have that particular bunny if it took me all morning. if I had not known better, I would have thought he was teasing me. Time and again, his tracks led into a bunch of grass with every indication that he was there for the day, but always they led out on the other side.

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Iowa State Teachers College Program Of Recitations, Spring 1932, Iowa State Teachers College Apr 1932

Iowa State Teachers College Program Of Recitations, Spring 1932, 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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Science Bulletin, Vol.4 No.7, March 1932 [Complete Issue] Mar 1932

Science Bulletin, Vol.4 No.7, March 1932 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Wings, Roy L. Abbott Mar 1932

Wings, Roy L. Abbott

Science Bulletin

When 'wings' are mentioned, most people at once think of birds. But wings, and the consequent power of flight, are by no means limited to birds. Among the mammals, for example, bats have wings and are excellent flyers. In both birds and bats, the wings are merely modified front legs.

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Waves, L. Begeman Mar 1932

Waves, L. Begeman

Science Bulletin

Of all the phenomena of the physical world, none is more important than that of waves. The average individual naturally assumes that the only waves of any importance in nature are water waves. To the student of science, however, there are other waves in nature far more important than those which we see rolling over the surface of a lake or of the ocean.

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The High-Powered Skunk, Roy L. Abbott Mar 1932

The High-Powered Skunk, Roy L. Abbott

Science Bulletin

I can think of no animal that is at once so provoking and repelling of attention as the common skunk. His bright little face, clean black and white fur, plume-like tail, and fat roly-poly body all invite one to take liberties with him, yet a single move towards such familiarity, and he is transformed instantly into a thing vilely incredible, paralyzing, stupefying, insufferable.

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Science Bulletin, Vol.4 No.6, February 1932 [Complete Issue] Feb 1932

Science Bulletin, Vol.4 No.6, February 1932 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Suggestions For Biology Or Nature Clubs, Ross W. Harris Feb 1932

Suggestions For Biology Or Nature Clubs, Ross W. Harris

Science Bulletin

The very first requirement for a successful club of this nature is enthusiasm for and an interest in the. world of living things. The sparks for kindling enthusiasm must come from off the hearth of the sponsor. While the students must be guided they should be led to feel that it is their program that they are working out and not that of a teacher who grants credit for participation.

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Consider The Sparrow Feb 1932

Consider The Sparrow

Science Bulletin

Most of the birds which you and I know best are fair-weather friends. That is to say, they stay with us just so long as the sun is warm and food is plentiful, but when winter comes, they forsake us. Nearly all of our common birds behave thus, which must mean, if birds are anything like humans, that it is our climate and not ourselves that they like.

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The Purple Pen, Volume 4, Number 2, February 1932 [Download Entire Issue] Feb 1932

The Purple Pen, Volume 4, Number 2, February 1932 [Download Entire Issue]

Purple Pen

No abstract provided.

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The Husophagus, Evelyn Fish Feb 1932

The Husophagus, Evelyn Fish

Purple Pen

No abstract provided.

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Science Bulletin, Vol.4 No.5, January 1932 [Complete Issue] Jan 1932

Science Bulletin, Vol.4 No.5, January 1932 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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National Geography Meetings, Alison E. Aitchison Jan 1932

National Geography Meetings, Alison E. Aitchison

Science Bulletin

The Christmas vacation always brings a full quota of meetings of interest to those who are engaged in educational work. Especially does this seem true for those interested in science. Two meetings of value to geographers were held at Ypsilanti, Michigan, where the new Union building, an alumni project of the Michigan State Normal College, afforded an excellent meeting place.

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The Lure Of The Turtle, Roy L. Abbott Jan 1932

The Lure Of The Turtle, Roy L. Abbott

Science Bulletin

I believe I never meet with a turtle without looking at him a second time at least, and I usually pick him up if I have an opportunity. For there is a lure about him, he attracts me powerfully though I can not tell just why. It may be partly admiration for his mighty ancestry, partly pity for his fallen estate, but some of it is just plain, everyday liking for his rather unprepossessing self. But there is plenty to see in him for all that!

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