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Effect Of Artificial Manure On Nitrification In Carrington Loam, Frederick B. Smith

Proceedings of the Iowa Academy of Science

The value of farmyard manure in maintaining soil fertility is well known. Recently, considerable interest has been manifested in a process of making artificial farmyard manure from straw and corn stalks. The process is still in the experimental stage and only a small amount of artificial manure is being produced. However, it seems desirable to study the effect of artificial manure compared with farmyard manure on soil conditions and crop yields. The purpose of this paper is to present some results secured on the effects of artificial manures, farm manure, green manures and crop residues on nitrification in Carrington loam.

Selective Action In The Zincke Nitration, L. Chas. Raiford, G. R. Miller

Proceedings of the Iowa Academy of Science

Zincke studied the action of nitrous acid on the bromine derivatives of the cresols, and found that in the meta series the halogen atom para to hydroxyl is replaced by the nitro radical, while in the ortho and para series the atom ortho to hydroxyl is replaced. In no case did he report the formation of isomeric compounds as a result of a single nitration.

On The Summation Σx^N, John F. Reilly

Proceedings of the Iowa Academy of Science

The symbol Σxⁿ will be used to denote the sum of the n th powers of the first x positive integers, that is, lⁿ + 2ⁿ + 3ⁿ +... +xⁿ, n integral. It is well known that this sum is equivalent to a polynomial of degree (n+l), having no constant term.

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

Proceedings of the Iowa Academy of Science

No abstract provided.

Soil Bacteriology As A Science, P. E. Brown

Proceedings of the Iowa Academy of Science

Soil Bacteriology or Soil Microbiology as it is often called is the science which treats of the microorganisms in soils, their character, life-history and functions and their relationship to the fertility or crop-producing power of the soil.

Noteworthy Iowa Fungi, Guy West Wilson

Proceedings of the Iowa Academy of Science

During the summer of 1929 a number of collections were made of parasitic fungi which for one reason or another should be made a matter of record. The following notes concern 17 species of which 4 appear to be new to the state. Of the hosts, 20 in number, ten are new. The fungi are listed in systematic sequence. The numbers in parenthesis following the names refer to the number of the species in Gilman and Archer. The host and locality are then given, with such notes as the specimens warrant.

A Study Of The Membracidae Known To Occur In Iowa, Don W. Hookom

Proceedings of the Iowa Academy of Science

The writer has collected Membracids in several localities for some time, and also has exchanged specimens with collectors in this and other parts of the country. The specimens have been classified and are in the collection of Iowa Wesleyan College. The writer has compared his list with those listed by Dr. W. D. Funkhouser, authority on Membracidae at the University of Kentucky in his World catalog of Membracidae, and those listed by Herbert Osborn in the Iowa Academy of Science Proceedings of 1891.

College Catalogue 1929-1930, Iowa State Teachers College

UNI Programs and Courses Catalogs

Table of Contents

Calendar for 1930-31 ... 5
Officers of Administration and Instruction ... 6
Faculty ... 7
General Information ... 25
The School Plant and Location ... 25
History of the Institution ... 25
Extra-Curricular Activities ... 25
Expenses ... 28
Information of Special Interest to New Students ... 26
Expenses and Fees ... 28
Scholarships ... 30
Employment of Students ... 30
Loans ... 31
The Placement Bureau ... 31
Plan of Organization ... 32
Entrance Requirements ... 33
Advisers and Amount of Work ... 34
Absences and the Making up of Work ... 35
Grades and Scholarship …

Abnormal Flowers Of Populus Grandidentata Michx., Lucy M. Cavanagh

Proceedings of the Iowa Academy of Science

No abstract provided.

European Bindweed In Iowa, A. L. Bakke

Proceedings of the Iowa Academy of Science

The European Bindweed, Creeping Jennie, Convolvulus arvensis, the worst perennial weed of California, Kansas, and Colorado, is now quite common in the northwestern part of the state. This species has a rather fine, deeply penetrating root system, which after a time forms a dense underground network of roots. The flowers and leaves are only about one-half the size of the native species, C. sepium. The plant is exceedingly hard to eradicate through cultural methods. The most effective procedure to destroy this weed is, in all probability, to spray it with herbicides like sodium chlorate.

The Food Selections Of Nursery School Children, Thomas F. Vance

Proceedings of the Iowa Academy of Science

The observations herewith reported were made during the Fall and Winter quarters of the school year 1929 and 1930 at the Nursey School of the Iowa State College. Twenty-seven children served as subjects during the first quarter and twenty-four for the second. Twenty-one were on the roll for both quarters.

Notes On Some Iowa Cladonias, Alfred R. Stanley

Proceedings of the Iowa Academy of Science

This paper is preliminary to a more complete study of this group of lichens. Up to the present time, I have examined, aside from my own field collections in the vicinity of Oskaloosa two herbaria.

Purification Of Water By Electro-Osmose, Edward Bartow, R. H. Jebens

Proceedings of the Iowa Academy of Science

A new method for the purification of water was shown me in the summer of 1928 in the laboratory of Phillips and Pain in Paris, France. The process was just being developed in France. It had been discovered in Germany and was there controlled by the Elektro-Osmose, A. G. At the present time, May, 1930, it is reported that many installations are in operation in Germany and France. The International Filter Company has obtained the rights for the United States and is installing machines.

The Toxicities Of Some Organo-Lead Compounds For Cancer And Related Studies, Henry Gilman, O. M. Gruhzit, J. D. Robinson, E. B. Towne

Proceedings of the Iowa Academy of Science

In connection with the application of organo-lead compounds in cancer, some plant diseases and as anti-knock reagents, a pharmacological study has been made of the relative toxicities of a miscellany of products derived from alkyl and aryl lead compounds. Some of the salts reported at this time have varying appreciable solubilities in water.

The Preparation Of M-Hydroxybenzonitrile, James B. Culbertson, Erwin L. Carpenter, Ernest K. Nielsen

Proceedings of the Iowa Academy of Science

It has been a general project in this laboratory to prepare the three monohydroxy diphenyl ketimines upon which certain studies have been planned. Last year the preparation of the 2-hydroxy and 4-hydroxy diphenyl ketimines were reported in these Proceedings. The present work has been directed toward the 3-hydroxy diphenyl ketimine. The former pair of ketimines were obtained by the action of the Grignard reagent, magnesium phenyl bromide, upon the corresponding hydroxybenzonitriles. To employ this same synthesis for the 3- or m-hydroxy diphenyl ketimine it has been necessary to prepare the appropriate hydroxybenzonitrile. Much greater difficulty has arisen in the preparation …

Title - Masthead

Science Bulletin

A Service Bulletin for Teachers of High School Science.

Monobromoamine With Organomagnesium Halides, Geroge H. Coleman, Charles B. Yager

Proceedings of the Iowa Academy of Science

The reaction of monobromoamine with organomagnesium halides has been studied and compared with that of monochloroamine with the same reagents. The yields of primary amines obtained from monobromoamine are considerably smaller than those from monochloroamine. Otherwise the reactions are similar. On account of the instability of monobromoamine it was necessary to develop special methods of preparing, analyzing and working with solutions of this compound.

The Fauna Of The Chemung Formation Of Southwestern New York, H. Donald Curry

Proceedings of the Iowa Academy of Science

The Randolph quadrangle is located just north of the Pennsylvania state line in the southern part of Cattaraugus County, in southwestern New York. During the summer of 1929, the writer spent six weeks in the field in the southern part of that quadrangle, and this paper is based upon the work done and the fossils collected at that time.

Maximum Precipitation In Short Periods Of Time, Charles D. Reed

Proceedings of the Iowa Academy of Science

For the first order Weather Bureau stations at Charles City, Davenport, Des Moines, Dubuque, Keokuk, Sioux City and Omaha, Nebraska, Table 1 shows the greatest rainfall of record in 5 minutes, 10 minutes, 15 minutes, 1 hour, 2 hours, and 24 hours.

Road Materials From The Des Moines Series Of The Pennsylvanian System Of South-Central Iowa, L. W. Wood

Proceedings of the Iowa Academy of Science

In connection with the extensive program of road improvement now in progress in Iowa, the State Highway Commission has conducted a rather detailed survey of the resources of road material within the state. In the southern half of Iowa, where such materials are most scarce, the survey has been most intensive. Not only have the superficial deposits been investigated, but the indurated rocks have also been carefully studied, both from their natural outcrops, and from the records of wells, mine shafts, etc.

Naming Of Burlington Limestone, Charles Keyes

Proceedings of the Iowa Academy of Science

The main body of the original Early Carbonic Mississippian series of Winchell, appears to get its title, not from the distinguished paleontologist of New York, and one-time State Geologist of Iowa, as is so often asserted, but from a much earlier designation. Nicollet, so early as 1841, clearly denominated the high limestone bluff at the town of Burlington, as the "Burlington section," noting characteristic fossils occurring in the rocks, but not distinguishing the basal shales covered mostly by heavy talus, which Worthen afterwards terms the Kinderhook shales, the beds previously called by Meek, Swallow, Hall, White & Whitfield and others, …

The Clarinda Oil Prospect, James H. Lees

Proceedings of the Iowa Academy of Science

Work has been prosecuted on an oil prospect about six miles south of Clarinda since November of 1928. A part of the record of strata is given in volume XXXIII of the reports of the Iowa Geological Survey. Since the publication of that report the well has been deepened somewhat. A description of the strata penetrated will be given and comparison will be made with the new well at Greenfield to the north and with the oil prospect at Nebraska City to the west.

A Note On The Stratigraphy Of The Cretaceous In Northwestern Iowa, A. C. Tester

Proceedings of the Iowa Academy of Science

The lithology of certain Benton (?) strata in Lyon County and adjacent parts of Minnehaha County, South Dakota is described. These rocks differ greatly from the common type of limestone and chalk of the Cretaceous of the Big Sioux and Missouri River region. The formation contains large quantities of siliceous material in the matrix and as spicules and in some beds as chert. Fragments of glass are common in one zone.

The Chemung Formation Of Iowa And Western New York, A. C. Tester

Proceedings of the Iowa Academy of Science

This paper summarizes the facts as presented in the papers by Laudon and Curry and reviews the general interpretations made by previous writers concerning the relationships of the Iowa and New York upper Devonian. A comparison is made of the Kinderhook fauna of Iowa and the fauna of the Deva-Carboniferous beds of southwestern New York and comparative stratigraphic sections of the areas between Iowa and New York are presented. The conclusion is reached that the upper Chemung of New York interfingers with transition beds which are tentatively correlated with the Kinderhook-Chattanooga formations, but that later Mississippian rocks were not deposited …

Ancient Iowa Orogenics And Their Present Day Impress, Charles Keyes

Proceedings of the Iowa Academy of Science

Except they be trained geologists few Iowans there are who would ordinarily think of looking for mountains in the smooth, illimitable prairies such as characterize this state of ours. Yet the evidences are many and plain, not only of the effects of mountain-making activities, but of the mountain roots themselves traversing quite across our domains. Amongst the latter are, indeed, indubitable traces of at least one mountain range that once reared its walls as loftily, as imposingly, and as majestically as do to-clay the Rockies above the Colorado plain.

Recessional Moraines Of The Wisconsin In Iowa, John E. Smith

Proceedings of the Iowa Academy of Science

The several major and many more minor recessional moraines are discussed with respect to their locations and relations to each other. The paper is a progress report of the work that was begun on this project several years ago.

An Algorithm For Writing The Coefficients Of A Polynomial With Given Zeros, C. W. Wester

Proceedings of the Iowa Academy of Science

Given a set of numbers {A₁}=a₁ …., a_n, we may represent the sum of the products, taken r at a time, of the first k numbers of the set by S(a_i,r,k). Obviously S(a_i,r,k)=S(a_i,r,k-l)+a_kS (a_i,r-1,k-1) for r, k>1. If in addition we define S (a_i,o,k) =1 for k>0 the relation holds for r,k=0. Also S(a_i,r,k)=O for k

Skyshine And Sunshine At Ames, William Kunerth, Russel D. Miller

Proceedings of the Iowa Academy of Science

As an initial step toward determining the amount of ultra violet light in skyshine and in sunshine it was deemed desirable to determine the ratio of skyshine to sunshine in the visible spectrum. Accordingly readings were taken on a horizontal plane on top of a tall building, once with the test plate of a Macbeth illuminometer exposed to the entire dome of the heavens including the sun and again when the sun was blocked out by an opaque disk. Observations were made every hour on perfectly clear days only.

Minimum Light Intensities Required For Reading, William Kunerth

Proceedings of the Iowa Academy of Science

The minimum light intensity required for comfortable reading depends on a number of factors. The test here reported was made with a group of students of Iowa State College and it should be emphasized that the results sought were minimum intensities for the sake of making comparison between different types of lighting possible. The maximum intensity permissible would doubtless be found much farther from that ordinarily recommended than is the minimum.

X-Ray Diffraction In Water 2° To 98°C: The Nature Of Molecular Association, G. W. Stewart

Proceedings of the Iowa Academy of Science

X-ray diffraction ionization curves of water show (1) the presence of two definite peaks corresponding to the separation of diffraction planes of 3.27 A.u. and 2.11 A.u.; (2) the practically constant diffraction intensity of one peak over the temperature range, 2^o to 98° C as compared with the gradual disappearance of the second peak with increasing temperature; (3) correspondence in angle of diffraction between these peaks and the chief diffraction intensities with ice crystals; and (4) the increase of peak width increasing temperature with a movement to indicating less distance of planes.