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Title Page - Letter Of Transmittal, L. S. Ross
Title Page - Letter Of Transmittal, L. S. Ross
Proceedings of the Iowa Academy of Science
No abstract provided.
Proceedings Of The Twenty-Seventh Annual Session Of The Iowa Academy Of Science: Staff & Committee Reports; Program, L. S. Ross, George F. Kay
Proceedings Of The Twenty-Seventh Annual Session Of The Iowa Academy Of Science: Staff & Committee Reports; Program, L. S. Ross, George F. Kay
Proceedings of the Iowa Academy of Science
No abstract provided.
Tramping In Western Washington, Thomas H. Macbride
Tramping In Western Washington, Thomas H. Macbride
Proceedings of the Iowa Academy of Science
The prosperity of our extreme northwestern commonwealth is largely dependent upon the products of its primeval forests. The present notes are intended to convey some impression of the present condition of the forest vegetation of western Washington as observed by a passing traveler during the winter of 1912-13.
Phylogeny Of The Araceae, James Ellis Gow
Phylogeny Of The Araceae, James Ellis Gow
Proceedings of the Iowa Academy of Science
The study of the Morphology of the Aroids has been almost completely neglected by botanists. This is unfortunate, since the group is, in a sense pivotal. Its anatomical characteristics indicate a relationship with the Naiadaceae and their allies together with a more distant connection, on the one hand with the Screw-pines and Palms, and on the other with the grasses. Points of relationship to the Liliaceae are not lacking, and there are some indications of affinity with the more primitive members of the Dicotyledons. At the same time, the group is by no means a doubtful assemblage, but …
Nitrogen In Rain And Snow: Second Paper, Nicholas Knight
Nitrogen In Rain And Snow: Second Paper, Nicholas Knight
Proceedings of the Iowa Academy of Science
In the proceedings of the Iowa Academy of Science for 1911, we described a series of experiments to show the amount of nitrogen in rain and snow, which we carried on during the year 1910. The work described in this paper has to do with a series of experiments in the same line during some months of 1911-12. During this period we collected twenty-seven samples altogether, fourteen of which were snow, and thirteen were rain or rain and snow. There were sixty-nine inches of snow and about five inches of rain.
The Rock From Solomon's Quarries, Nicholas Knight
The Rock From Solomon's Quarries, Nicholas Knight
Proceedings of the Iowa Academy of Science
A specimen of the rock from Solomon's quarry was lately received by us for analysis. It is the material that served in the construction of Solomon's Temple, a building characterized by Dr. Lyman Abbott as an architectural splendor. The rock is of snowy whiteness, soft when first removed from the quarry, but it soon hardens on exposure to the air. The natives call the rock from this portion of the quarry "The Royal." The quarries extend underneath the city. The rock is soft and quite porous. There is a variety in another portion of the quarry, on a higher level …
The Effect Of Smoke And Gases Upon Vegetation, A. L. Bakke
The Effect Of Smoke And Gases Upon Vegetation, A. L. Bakke
Proceedings of the Iowa Academy of Science
The history of an industrial community marks itself into three divisions: (1) the movement from the country into the city, (2) the building up of enterprises or commercial concerns, (3) the conservation of waste products. The movement of the people from the country to the city carries with it a number of problems. Many of these would not be met with in the country.
Segregation Of Fat Factors In Milk Production, F. B. Hills, E. N. Boland
Segregation Of Fat Factors In Milk Production, F. B. Hills, E. N. Boland
Proceedings of the Iowa Academy of Science
The need of an investigation into the problem of inheritance of fat in milk, has long been recognized by the practical milk producer and the physiologist. For the former, a solution of the problem would simplify, very markedly, his breeding operations, as well as increase the certainty of his results. For the latter, a knowledge of the fat producing possibilities of the animal genetically would give an index to the physiological limits of fat formation, and its relation to metabolism.
Complete Succession Of Iowan Cretacic Terranes, Charles Keyes
Complete Succession Of Iowan Cretacic Terranes, Charles Keyes
Proceedings of the Iowa Academy of Science
For several reasons the section of Cretacic strata in northwestern Iowa is of especial interest. It was in this section, near the mouth of the Big Sioux River, that for the first time in the New World the stratigraphic equivalents of the English Cretacic formations were clearly recognized. In this section true chalk, made up of countless myriads of microscopic organic remains, was first discovered in this country. This section is also a part of the classic locality for the Mid-Cretacic formations of America.
Recognition Of Beds Of Tertiaric Age In Our State, Charles Keyes
Recognition Of Beds Of Tertiaric Age In Our State, Charles Keyes
Proceedings of the Iowa Academy of Science
Iowa has been repeatedly and so thoroughly planed off and worked over by continental glaciers of no less than five great ice-invasions that it could be hardly expected that any remnants of the softer pre-glacial formations, if there ever were any deposited within the state's boundaries, would survive. Moreover, the state is now everywhere so deeply covered by the several till-sheets and the vast eolian soil-mantles as to effectually conceal all traces of the existence of pre-glacial deposits which we ordinarily refer to the Tertiaries.
A Pleistocene Section From Des Moines South To Allerton, John L. Tilton
A Pleistocene Section From Des Moines South To Allerton, John L. Tilton
Proceedings of the Iowa Academy of Science
1. A valuable series of exposures is now to be found along the, railroad from Des Moines to Allerton. 2. A detailed description of some of the outcrops. 3. General observations and relations.
Additional Evidence Of Post-Kansan Glaciation In Johnson County, Iowa, Morris M. Leighton
Additional Evidence Of Post-Kansan Glaciation In Johnson County, Iowa, Morris M. Leighton
Proceedings of the Iowa Academy of Science
Johnson County offers a field of phenomena that are strikingly applicable to the theme of our late Pleistocene controversy, namely. “Has the northeast quarter of Iowa, except the Driftless Area, been invaded by an ice-sheet later than the Kansan?”
The Wisconsin Drift-Plain In The Region About Sioux Falls, J. Ernest Carman
The Wisconsin Drift-Plain In The Region About Sioux Falls, J. Ernest Carman
Proceedings of the Iowa Academy of Science
The region considered in this paper is a small area lying to the south and southeast of Sioux Falls, South Dakota, and the problem is, the age of a drift-plain.
The Similarity Of Electrical Properties In Light-Positive Selenium To Those In Certain Crystal Contacts, F. C. Brown
The Similarity Of Electrical Properties In Light-Positive Selenium To Those In Certain Crystal Contacts, F. C. Brown
Proceedings of the Iowa Academy of Science
Many of the phenomena having to do with the electrical properties of selenium have been regarded as almost unique. Likewise many of the phenomena appearing in connection with the resistance of crystal contacts are considered as unique. Neither of the above sets of phenomena have been explained from a sufficiently simple and satisfactory basis.
The Use Of The Rayleigh Disk In The Determination Of Relative Sound Intensities, Harold Stiles
The Use Of The Rayleigh Disk In The Determination Of Relative Sound Intensities, Harold Stiles
Proceedings of the Iowa Academy of Science
In the second volume of his Theory of Sound, Lord Rayleigh presents a method for determining mathematically the intensity of sound at very great distances from a rigid sphere, the source of sound being confined to a small area on its surface. Prof. G.W. Stewart has extended the work of Rayleigh and has calculated the relative sound intensities for sets of points lying on circles concentric with the sphere, the planes of these circles also passing through the source of sound. The points on any one circle were 15 degrees apart and the diameters of the four circles used were …
On The Existence Of A Minimum Volume In Solution, Leroy D. Weld
On The Existence Of A Minimum Volume In Solution, Leroy D. Weld
Proceedings of the Iowa Academy of Science
This research has for its general object to inquire into the physical condition of substances in near-saturated aqueous solution. The subject was attacked by means of experiments at different temperatures on the apparent specific volume in solution; by which is meant, the volume of that amount of solution which contains one gram of the solute, minus the natural volume of the water contained therein. This quantity is always somewhat less than the volume of the solid solute.
Helpful And Harmful Iowa Birds, Fred Berninghausen
Helpful And Harmful Iowa Birds, Fred Berninghausen
Proceedings of the Iowa Academy of Science
Forty million dollars is the estimated loss annually to the United States on account of weeds, according to Prof. Beal, member of the Department of Agriculture. That a generous share of this loss belongs to Iowa we must all admit, for Iowa is a great agricultural state. Since such is the case it would not seem at all strange if Iowa people should take steps to make this loss as small as possible.
Nest Boxes For Woodpeckers, Frank C. Pellett
Nest Boxes For Woodpeckers, Frank C. Pellett
Proceedings of the Iowa Academy of Science
An editorial in one of the well-known magazines devoted to ornithology, several years ago, which suggested that it would probably be necessary to devise expensive machinery to bore out cavities in natural wood in imitation of those made by woodpeckers themselves, in order to attract these birds, first led me to attempt to supply their requirements. As far as I could learn woodpeckers had never been known to occupy such boxes in America up to that time. I did not learn of the successful boxes in Germany until after my own had been occupied and believed that I was working …
A Further Study Of The Home Life Of The Brown Thrasher, Ira N. Gabrielson
A Further Study Of The Home Life Of The Brown Thrasher, Ira N. Gabrielson
Proceedings of the Iowa Academy of Science
During the summer of 1911, the writer made a detailed study of the nesting habits of the Brown Thrasher which covered a considerable part of the nesting period. The report of this study was published in the Wilson Bulletin. During the summer of 1912 the writer made one full day's observations on a nest of the same species under somewhat different circumstances, such that some additional conclusions are reached regarding the nestling food.
Life History Notes On The Plum Curculio In Iowa: Conotrachelus Nenuphar Herbst, R. L. Webster
Life History Notes On The Plum Curculio In Iowa: Conotrachelus Nenuphar Herbst, R. L. Webster
Proceedings of the Iowa Academy of Science
No abstract provided.
Fall Term Commencement [Program], November 26, 1912, Iowa State Teachers College
Fall Term Commencement [Program], November 26, 1912, Iowa State Teachers College
UNI Commencement Programs
The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.
Summer Term Commencement [Program], July 26, 1912, Iowa State Teachers College
Summer Term Commencement [Program], July 26, 1912, Iowa State Teachers College
UNI Commencement Programs
The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.
Spring Term Commencement [Program], June 11, 1912, Iowa State Teachers College
Spring Term Commencement [Program], June 11, 1912, Iowa State Teachers College
UNI Commencement Programs
The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.
Courses Of Study And Program Of Recitations, 1912-1913, Iowa State Teachers College
Courses Of Study And Program Of Recitations, 1912-1913, 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.
Summer Term, Sixteenth Annual Session, 1912, Iowa State Teachers College
Summer Term, Sixteenth Annual Session, 1912, 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.
Nether Delimitation Of Our Carbonic Rocks, Charles Keyes
Nether Delimitation Of Our Carbonic Rocks, Charles Keyes
Proceedings of the Iowa Academy of Science
The exact stratigraphic relations of, and the exact boundary line between, the latest Devonic formations and the earliest Carbonic rocks of the Mississippi valley north of the Missouri river have long remained some of the unsolved geographic problems. That the question should stand today much as it did 60 years ago is due chiefly to the circumstance that although three state geological surveys have repeatedly attacked it, all the necessary facts were not available in any one state alone. No observer seems to have had the opportunity to make critical investigations in all three of the states or to have …
President's Address: The Mission And Spirit Of The Pure Scientist, Louis Begeman
President's Address: The Mission And Spirit Of The Pure Scientist, Louis Begeman
Proceedings of the Iowa Academy of Science
The Mission-Michael Faraday has been called the greatest experimental scientist of all ages. No one who has read the biography of this eminent man of science will be inclined to dispute such a statement. Faraday was interested in all phases of scientific thought but devoted his energies particularly to chemical and electrical research. It is no exaggeration to say that he created modern industrial electricity. His experimental researches covered a period of forty-four years. The mere list of the titles of his papers fills several pages in the scientific catalog published by the Royal Society.
Food Habits Of Red-Tailed Hawk, Cooper Hawk, And Sparrow Hawk, Frank C. Pellett
Food Habits Of Red-Tailed Hawk, Cooper Hawk, And Sparrow Hawk, Frank C. Pellett
Proceedings of the Iowa Academy of Science
Much has been done, during the past few years, in determining the food habits of the various species of birds by means of stomach examinations. With a sufficient number of specimens, this method should give accurate information. Because of the time and patience required, and the difficulties to be overcome, little has been done by means of personal observation of the individuals in the field. During the past few years, it has been a matter of considerable interest to me, to follow up the reports of laboratory examinations of stomachs by personal observation, especially of the birds of prey.
1912 Old Gold, Iowa State Teachers College
1912 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.
Simblum Sphaerocephalum In Iowa, Henry S. Conard
Simblum Sphaerocephalum In Iowa, Henry S. Conard
Proceedings of the Iowa Academy of Science
In October, 1911, a student at Grinnell College, Miss Winnie Gilbert, brought in a specimen of the pink stink-horn, Simblum sphaerocephalum Schlecht. It was found on the north bank of a deep railroad cut, a mile west of town. Further search in this place resulted in the collection of several mature specimens and a number of "eggs." They grew about half way up the slope, facing south, on Marshall silt loam that had slid down the bank, and about at the level of the boundary between the loess and the glacial drift. Perhaps there are special moisture conditions at this …