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Laboratory Work In Poultry, H. Earl Rath Feb 1929

Laboratory Work In Poultry, H. Earl Rath

Science Bulletin

It is probable that the winter feeding, housing and management problems of poultry have been taken up in class before this time. If not, the alert agricultural instructor can develop some very practical laboratory work by conducting a survey in the community of the conditions under which poultry is kept, and then comparing the results obtained from flocks cared for under varying conditions.

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Atmospheric Pressure, L. Begeman Feb 1929

Atmospheric Pressure, L. Begeman

Science Bulletin

An account of the experiment reached Paris the next year and came to the notice of Pascal. He could not try the experiment until 1646 when glass tubes were available to him. Pascal reasoned that if the atmosphere supported the mercury column, the height of the column should be lessened when the apparatus was carried to a high altitude.

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Simple Experiments To Show Atmospheric Pressure, L. Begeman Jan 1929

Simple Experiments To Show Atmospheric Pressure, L. Begeman

Science Bulletin

The teacher of general science in a small high school often lacks complete laboratory equipment, yet many experiments can be conducted, with simple, inexpensive, and readily available material. For the demonstration of atmospheric pressure, try the following experiments.

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The Teaching Of Physiography, E. J. Cable Jan 1929

The Teaching Of Physiography, E. J. Cable

Science Bulletin

It is quite unfortunate that a subject as valuable as physiography finds such a small patronage among our high school pupils. This is probably due partly to the fact that there is still a lack of agreement among teachers as to the content or classification of the subject. In some high schools physiography is required of all freshmen. Often it goes under the title of "general science" or "modern geography."

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Cockroaches For Laboratory Study, Roy L. Abbott Jan 1929

Cockroaches For Laboratory Study, Roy L. Abbott

Science Bulletin

Teachers of high school biology are often handicapped by a lack of living material. This is particularly true in the teaching of insects. Most texts in biology use the grasshopper as a type of insect, largely, I suppose, because of its familiarity to the average pupil.

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Winter Study Of Trees, O. R. Clark Jan 1929

Winter Study Of Trees, O. R. Clark

Science Bulletin

One often hears the idea expressed that there is little to be done during the winter months in the way of field or laboratory studies of trees. In reality there is a wealth of material available and the following suggestions are offered in the hope that they will be helpful in calling attention to the possibilities of winter tree study.

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Hydrostatics, L. Begeman Jan 1929

Hydrostatics, L. Begeman

Science Bulletin

The classroom apparatus necessary for an effective, interesting presentation of hydrostatics includes: pressure tubes, manometer tubes, pressure syringe, Pascal's vases and equilibrium tubes. All of these are listed in the apparatus catalogs found in every high school.

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Laboratory Upkeep, R. W. Getchell Jan 1929

Laboratory Upkeep, R. W. Getchell

Science Bulletin

The article last month dealt with reagent bottles. Another problem is met in the proper care of iron ware - the special target of the corrosive laboratory fumes. To supply the pupil with rusty, oxide encrusted metal equipment is to encourage careless, slovenly work. An annual "paint day" is essential.

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The Copper Content Of Livers And Liver Extracts, G. N. Quam Jan 1929

The Copper Content Of Livers And Liver Extracts, G. N. Quam

Proceedings of the Iowa Academy of Science

Stated in mg. per kg. beef liver has been found to contain 16 to 30 mg. for the adult and for calf liver McHargue has reported 161.3 mg. while Robscheit-Robbins and others reported 145 mg. Adult hog liver yielded an average of 50 mg. per kg. A human fetal liver yielded 69.36 mg. per kg.; that of a still-born child 28 mg.; while an adult liver (cirhosis) 20 mg. Van Hallie and Van Eck reported 26.1 mg. per kg. for a still-born liver and White reported 19.1 mg. for an adult liver (sepsis).

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The Relationship Between Biblical Information And Conduct, Pleasant R. Hightower Jan 1929

The Relationship Between Biblical Information And Conduct, Pleasant R. Hightower

Proceedings of the Iowa Academy of Science

The question of the influence of Biblical information on conduct has been discussed considerably the last few years. Some think that merely to know the facts of the Bible will solve the many perplexing problems in the conduct of boys and girls. On the basis of this claim they argue that the Bible should be included in the public schools and read to the children without comment or that the children should be required to commit portions to memory and tested for perfect recitations. Others claim that a mere factual knowledge will not solve the problems of conduct. They think …

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Science Bulletin, Vol.1 No.3, January 1929 [Complete Issue] Jan 1929

Science Bulletin, Vol.1 No.3, January 1929 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Title - Masthead Jan 1929

Title - Masthead

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Editorial Jan 1929

Editorial

Science Bulletin

We enjoyed a visit the other day with the representative of a company which supplies files for government publications. This reminds us of how essential to good teaching is supplementary material. It both instructs and offers variety. Too often, in the mind of the pupil, the words schoolroom and monotony are synonyms.

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An Experiment In Hydrostatics, L. Begeman Jan 1929

An Experiment In Hydrostatics, L. Begeman

Science Bulletin

Individual laboratory work in hydrostatics is not very essential if the teacher is properly equipped for classroom demonstration. However, it would be interesting and profitable in communities where gas is sup- plied to the laboratory, to have the student measure the gas pressure by means of a water column.

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The Alumni News Letter, V13n1, January 1, 1929, Iowa State Teachers College Jan 1929

The Alumni News Letter, V13n1, January 1, 1929, Iowa State Teachers College

The Alumni News Letter

Contains news of the College and its alumni.

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A Theory Of Solubility, P. A. Bond Jan 1929

A Theory Of Solubility, P. A. Bond

Proceedings of the Iowa Academy of Science

The theory supposes that solubility is due to two forces; first, one which tends to arrange substances into the lattice forms which they would have in the solid state, second, to thermal forces tending to break up such lattice forms. The fundamental assumption is made that lattice forms consisting of combinations of solvent and solute must tend to form where solution exists.

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The Effects Of Substituents In The Formation Of Thiocarbanilides, L. Chas. Raiford, G. Mervin Mcnulty Jan 1929

The Effects Of Substituents In The Formation Of Thiocarbanilides, L. Chas. Raiford, G. Mervin Mcnulty

Proceedings of the Iowa Academy of Science

It is well known that many reactions of benzene derivatives are hindered by the presence of substituents that are ortho as respects the reacting group. In the work here reported such hindrance has been observed when the substituent occupies the meta position.

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A Method Of Determining The Thermal Conductivity Of Wall Board And Other Heat Insulating Products Made From Corn-Stalks, Herbert Stiles, Harold Stiles Jan 1929

A Method Of Determining The Thermal Conductivity Of Wall Board And Other Heat Insulating Products Made From Corn-Stalks, Herbert Stiles, Harold Stiles

Proceedings of the Iowa Academy of Science

The apparatus herein described was designed to measure the thermal conductivity of wall board and other heat insulators made from corn-stalks in the laboratories of the Chemical Engineering Department of Iowa State College.

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The Effect Of Pressures Up To 16000 Atmospheres Upon The E.M.F. Of The Weston Standard Cell, Thomas C. Poulter, Carter Richey, Robert Wilson, John Fulton Jan 1929

The Effect Of Pressures Up To 16000 Atmospheres Upon The E.M.F. Of The Weston Standard Cell, Thomas C. Poulter, Carter Richey, Robert Wilson, John Fulton

Proceedings of the Iowa Academy of Science

A variety of types of Weston standard cells were constructed and the electromotive force was found to increase with the pressure. The shape of the curve being effected somewhat by the material of which the cell case was constructed.

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An Experiment In Mental Rehabilitation, Walter S. Newell Jan 1929

An Experiment In Mental Rehabilitation, Walter S. Newell

Proceedings of the Iowa Academy of Science

The report presents the case of Mr. H., a student in Coe College who volunteered for service in the World War and suffered a serious injury by fall of an air-plane. Mr. H. recovered consciousness but had no memory and attempts to restore his lost holdings by showing him pictures of home scenes and by bringing him back to his college environment were only partially successful. The report gives something of Mr. H.'s background High school and College record prior to his injury.

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Distribution Of Brood B Of White Grubs In Iowa In 1928, H. E. Jaques Jan 1929

Distribution Of Brood B Of White Grubs In Iowa In 1928, H. E. Jaques

Proceedings of the Iowa Academy of Science

Since most of the rather large number of species of May beetles appearing throughout the middle west seem to have a three year life cycle with a greater or smaller number of individuals appearing each year, the resulting three broods have been designated A, B and C. Brood A, which last appeared as destructive grubs in 1927, is the largest brood and causes heavy damage in many sections of the United States. The damage from the grubs of Brood A seems to have been increasing in Iowa in recent years.

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Index Jan 1929

Index

Proceedings of the Iowa Academy of Science

No abstract provided.

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The Lability And Relative Reactivities Of Organic Radicals, Henry Gilmann, Edith L. St. John, L. L. Heck Jan 1929

The Lability And Relative Reactivities Of Organic Radicals, Henry Gilmann, Edith L. St. John, L. L. Heck

Proceedings of the Iowa Academy of Science

Studies have been made of the rates of many reactions involving organometallic compounds, by means of the color test of Gilman and Schulze. These rate studies comprise: (1) the relative reactivities of a variety of compounds towards a typical organometallic compound; (2) the relative reactivities of a series of related compounds like nitriles or azo compounds with an organometallic compound; (3) and, the differences in rate of reaction of a series of organometallic compounds towards other compounds.. The same method has been used in a study of the effect of concentration, temperature and catalysts on reaction rates. Also, it has …

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The Nashua Marls Of The St. Johns River Region, S. W. Stookey Jan 1929

The Nashua Marls Of The St. Johns River Region, S. W. Stookey

Proceedings of the Iowa Academy of Science

The Tertiary formations represented in Florida. Dall's papers on the Nashua marls of the Caloosahatchee River region of Southwestern Florida. The recognition of Pliocene marls along the St. Johns River by Matson and Clapp. Lists of fossils there collected. Lists of fossils collected by the author one-half mile north of the Atlantic coast Line bridge compared with those collected at Yelvington ten miles west of the St. John's River. Comparison of these with previous lists published. These all seem to be of late Plicene age.

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A Spectrophotometric Study Of The Color Of Meats, A. A. Benedict Jan 1929

A Spectrophotometric Study Of The Color Of Meats, A. A. Benedict

Proceedings of the Iowa Academy of Science

The rapid change in the color of meat when exposed to the air has made it very difficult to make accurate comparisons of the colors of different samples. During this investigation it was found that this change could be prevented by placing the sample of meat between glass plates immediately after cutting. A comparison of the intensity of the light diffusely reflected from various cuts of meat was made by means of a spectrophotometer in the spectral region between 500 mμ and 700 mμ.

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Officers, Past Presidents, And Members, Iowa Academy Of Science Jan 1929

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

Proceedings of the Iowa Academy of Science

No abstract provided.

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The Inoculation Of Different Varieties Of Soybeans By Various Strains Of Rhizobium Japonicum, G. Gordon Pohlman, R. H. Walker Jan 1929

The Inoculation Of Different Varieties Of Soybeans By Various Strains Of Rhizobium Japonicum, G. Gordon Pohlman, R. H. Walker

Proceedings of the Iowa Academy of Science

The symbiotic nitrogen fixing bacteria have usually been grouped on the basis of their ability to cause inoculation in certain species or groups of leguminous plants. In this system of classification the soybean bacteria (Rhizobium japonicum) are usually placed alone as no conclusive evidence of cross inoculation with any other legume has been secured. Within this species certain differences in physiological reactions may be noted. Variations in the efficiency of the soybean organisms both in their ability to infect the host plant and in their ability to fix nitrogen are quite generally recognized. The suggestion has also been made that …

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The Ecesis Of The Gentian In Relation To Environmental Transition, Ada Hayden Jan 1929

The Ecesis Of The Gentian In Relation To Environmental Transition, Ada Hayden

Proceedings of the Iowa Academy of Science

The gentian as a factorial element of the vanishing prairie.

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Professor J. H. Paarmann, L. H. Pammel Jan 1929

Professor J. H. Paarmann, L. H. Pammel

Iowa Book Gallery

A brief biography of J.H. Paarmann, curator of the Davenport Academy.

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What Shall We Do With Precambrian?, Charles Keyes Jan 1929

What Shall We Do With Precambrian?, Charles Keyes

Proceedings of the Iowa Academy of Science

Recent marked tendency shown in Europe especially to give taxonomic rank comparable to geological period, Carbonic, Cretacic, and the like, to rocks older than those of Cambric age, and to designate the rock column represented Precambian appears to be, in this country at least, a notably retrogressive movement. It parallels the situation a century ago when Wernerians were possessed with jumbling together all rocks beneath those of Cretacic age, as we know them today, under the title of the Transition Class. Out of the latter speedily take on form six great systems. Thus, late delimitations of Precambrian imply its recognition …

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