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Articles 10831 - 10860 of 11057
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Necrology: Charles Aldrich, L. H. Pammel, H. E. Summers, L. S. Ross
Necrology: Charles Aldrich, L. H. Pammel, H. E. Summers, L. S. Ross
Proceedings of the Iowa Academy of Science
No abstract provided.
Notes On Peronosporales For 1907, Guy West Wilson
Notes On Peronosporales For 1907, Guy West Wilson
Proceedings of the Iowa Academy of Science
Among the problems in the life history of the Peronosporales two important and interesting ones have received far less attention than they deserve. These are (1) the interrelation of meteorological conditions and the abundance and development of these fungi (2) the location of centers of seasonal distribution. While these problems have attracted the attention of a number of mycologists, they are of such a nature as to necessitate a series of observations extending over a term of years in a given locality and at the same time to require the cooperation of observers in localities widely separated in space and …
Revival Of An Old Method Of Brain Dissection, H. J. H. Hoeve
Revival Of An Old Method Of Brain Dissection, H. J. H. Hoeve
Proceedings of the Iowa Academy of Science
All authors seem to agree that the brain must be hardened by some method in order to be fit for dissection, as far as its fibers are concerned. Some have boiled the brain in oil (Spurzheim, 1834), and others have used chromic acid solution for the same purpose (Hyrtl, 1857). Some years ago zinc chloride was in general use for that purpose and of late nearly everyone uses formaldehyde, 40 per cent diluted. I have employed formaldehyde in a 2 per cent solution, changed every day until the fifth day, when I put the brain in a 5 per cent …
Some Features Of Iowa Ground Waters, W. S. Hendrixson
Some Features Of Iowa Ground Waters, W. S. Hendrixson
Proceedings of the Iowa Academy of Science
About ten years ago the Iowa Geological Survey published an elaborate Report on Iowa Artesian Wells by Professor William H. Norton of Mt. Vernon. In this Report, which occupies most of Vol. VI of the Survey, are published the analyses of about fifty deep well waters. The geology of these wells and other deep borings was fully discussed, and illustrated.
Some Municipal Water Problems, L. H. Pammel
Some Municipal Water Problems, L. H. Pammel
Proceedings of the Iowa Academy of Science
One of the most important subjects engaging the attention of cities of various size in this country is a good, wholesome water supply, a supply which shall be free from those organisms which are responsible for certain diseases that may be classed with the preventable.
The Physical Laboratory At Iowa College, Frank F. Almy
The Physical Laboratory At Iowa College, Frank F. Almy
Proceedings of the Iowa Academy of Science
With the completion of the new library building, the gift of Andrew Carnegie, the old library building, Goodnow Hall, became available for Physics and Mathematics. The building is a very substantial red stone building, finished throughout in hard wood.
Cladocera Of Des Moines And Vicinity, B. O. Gammon
Cladocera Of Des Moines And Vicinity, B. O. Gammon
Proceedings of the Iowa Academy of Science
This investigation was begun in April, 1901 and collections were made at various intervals during that spring. During the summer of 1901 eight or nine weeks were spent in collecting and identifying specimens. Again in the summer of 1902 the work was taken up for about five weeks and during the early part of the summer of 1903 further collections were made. At odd times during all this period new specimens have been noted as they were found in material collected for work in the Drake Zoological Laboratories.
The Carotid Arteries And Their Relation To The Circle Of Willis In The Cat, H. W. Norris
The Carotid Arteries And Their Relation To The Circle Of Willis In The Cat, H. W. Norris
Proceedings of the Iowa Academy of Science
The value of the domestic cat as an object of dissection in work introductory to comparative anatomy in general and to mammalian anatomy in particular, makes it important that our knowledge of this form should be as exact as possible.
Dolomite And Magnesite With Reference To The Separation Of Calcium And Magnesium, Nicholas Knight, Ward H. Wheeler
Dolomite And Magnesite With Reference To The Separation Of Calcium And Magnesium, Nicholas Knight, Ward H. Wheeler
Proceedings of the Iowa Academy of Science
The estimation of calcium and magnesium in a mineral or rock is frequently necessary and seems like a simple matter, yet a great deal of work has been done on the subject, and different views are held as to the best procedure. The method that he has become accustomed to is doubtless the best for the individual analyst or teacher. Some of the methods, however, seem to be more simple and direct, and therefore less likely to lead to error than other processes which have been devised.
Action Of Bromic Acid On Metals, W. S. Hendrixson
Action Of Bromic Acid On Metals, W. S. Hendrixson
Proceedings of the Iowa Academy of Science
About two years ago I submitted to the Iowa Academy of Science a communication on the action of chloric acid on metals, in which it was shown that in some cases the metals dissolved without the evolution of any gas, the action apparently being the oxidation of the metal and the immediate formation of salts from the oxides and the excess of chloric acid, and the hydrochloric acid produced by the reduction of chloric acid. In the cases of some metals there occurred at the same time oxidation of the metal and the evolution of free hydrogen. In fact, in …
Food Of Subterranean Crustacea, L. S. Ross
Food Of Subterranean Crustacea, L. S. Ross
Proceedings of the Iowa Academy of Science
Supply of food and demand for it is one of the important factors to be considered in the struggle for existence, a factor that insistently demands proper attention on the part of every organism in its solution of the problem whether it shall exist or shall not. Many students have observed, many have killed and dissected hundreds and thousands of animals in determining what is the character of the food supplies of various species living in the water above ground, and on the surface of the earth, but not many it seems have entered seriously into the determination of the …
History Of Black Hawk County, Iowa, And Representative Citizens, Isaiah Van Metre
History Of Black Hawk County, Iowa, And Representative Citizens, Isaiah Van Metre
Iowa Book Gallery
This book provides a history of Black Hawk County, Iowa, from its settlement in 1834 through the book's publication in 1904. Numerous biographical entries and portraits are included.
A Method For The Determination Of Hydriodic And Hydrobromic Acids, W. S. Hendrixson
A Method For The Determination Of Hydriodic And Hydrobromic Acids, W. S. Hendrixson
Proceedings of the Iowa Academy of Science
About a year ago I presented to the Iowa Academy of Sciences a paper on a method of determining chloric acid by the reduction of the acid with metallic iron in the presence of dilute sulphuric acid, and the titration of the hydrochloric acid formed, by the method of Volhard. The same paper, somewhat extended, appeared in another periodical. In this communication it was suggested that the method might probably be used equally well for the determination of bromic and iodic acids, and two determinations of bromic acid were included in the paper.
A Geological Situation In The Lava Flow, With Reference To The Vegetation, Harriet M. Clearman
A Geological Situation In The Lava Flow, With Reference To The Vegetation, Harriet M. Clearman
Proceedings of the Iowa Academy of Science
This great lava flow extends over a great part of Idaho, Washington, and Oregon. The area covered is extensive, some 200,000 square miles. That this flow has considerable depth may be seen at Shoshone Falls, and at various places where the river has cut a gorge. That there were successive flows with intervals of rest between may also be seen by a river gorge, for in the walls are fossil roots and stumps. Further than this but little has been written concerning this wonderful field.
The So-Called Dorsotrachealis Branch Of The Seventh Cranial Nerve In Amphiuma, H. W. Norris
The So-Called Dorsotrachealis Branch Of The Seventh Cranial Nerve In Amphiuma, H. W. Norris
Proceedings of the Iowa Academy of Science
Fischer in his work on the Derotremes and Perennibranchs describes a peculiar branch of the seventh cranial nerve in Amphiuma, distributed, according to his statement, to the hyotrachealis muscle. Kingsley in his recent paper on the cranial nerves of Amphiuma agrees with Fischer that the nerve is one having no homologue in other Amphibians. According to him the nerve ends in the dorsotrachealis muscle. My own observations are so at variance with the views of these two writers that the following detailed account of the course of this extraordinary nerve is hereby given. Observations were made upon specimens of Amphiuma …
The Action Of Chloric Acid On Metals, W. S. Hendrixson
The Action Of Chloric Acid On Metals, W. S. Hendrixson
Proceedings of the Iowa Academy of Science
In the course of my work a year ago on Silver as a Reducing Agent, in which the action of finely divided silver on chloric, iodic and chromic acids was studied quantitatively, there was occasion to study the literature relating to the action of chloric and related acids on other metals. It soon appeared clear that the amount of information to be gained about the action of chloric acid in particular, on the metals was very meager, and it appeared also that there were several errors, whose origin in most cases could not be traced, that had apparently come down …
Presidential Address - The Social Service Of Science, William Harmon Norton
Presidential Address - The Social Service Of Science, William Harmon Norton
Proceedings of the Iowa Academy of Science
The extent to which society may be considered as an organism is still, I understand, a matter of controversy with sociologists. But without awaiting its adjudication, we may surely make use of a simile as ancient as that of the Apostle who spoke of individual Christians as members of one body, or as that of the wise old Roman, who taught the mutinous plebs the parable of the body politic, all of whose members were nourished by the well-fed patrician belly, and consider together this evening the social function of science in the body social.
Necrology: Arthur A. Crozier; Robert Combs; Carl Edward Schlabach, L. H. Pammel
Necrology: Arthur A. Crozier; Robert Combs; Carl Edward Schlabach, L. H. Pammel
Proceedings of the Iowa Academy of Science
No abstract provided.
Minutes: Iowa Academy Of Science, 1887-1899, Iowa Academy Of Science
Minutes: Iowa Academy Of Science, 1887-1899, Iowa Academy Of Science
Iowa Academy of Science Documents
Meeting minutes, organizational constitution, news reports, conference programs, correspondence, and more from the Iowa Academy of Science during the years 1887-1899.
Klebs-Leoffler Bacillus, Gershom H. Hill
Klebs-Leoffler Bacillus, Gershom H. Hill
Proceedings of the Iowa Academy of Science
This is a scientific age. The use of scientific methods in the vocation by which a man gains a livelihood makes it both interesting and profitable. The scientific man realizes the necessity of telling the truth, the whole truth and nothing but the truth. Scientific work makes a man careful, accurate and a close observer. The scientific American is somewhat different from the scientific German. The former places a high cash value on his time; he is intensely utilitarian. The geologist is expected to furnish the cities with clay and coal to make brick for paving and for other purposes. …
Some Physical Aspects Of General Geological Correlation, Charles R. Keyes
Some Physical Aspects Of General Geological Correlation, Charles R. Keyes
Proceedings of the Iowa Academy of Science
The main object of the present communication is to formulate, briefly, certain results which have been obtained in the course of recent attempts to parallel some of the geological terranes in the Mississippi Valley. The suggestions they offer appear to have a much more than local bearing, and to affect the stratigraphy of the entire region. They also have an important influence upon the whole problem of general correlation and, perhaps, also, even upon our present system of geological classification.
Waverly Phoenix, April 28, 1897
Waverly Phoenix, April 28, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.
Waverly Phoenix, April 21, 1897
Waverly Phoenix, April 21, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.
[05] Alice French / Octave Thanet, Letter, Literature
[05] Alice French / Octave Thanet, Letter, Literature
Iowa Documents Class Projects
A typewritten letter from Alice French. This letter was written in Davenport, Iowa on April 17, 1897 and is a response to a letter written by Miss Halstead. French discusses articles about her, books published by her, and her current works within the letter.
Waverly Phoenix, April 14, 1897
Waverly Phoenix, April 14, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.
Waverly Phoenix, April 7, 1897
Waverly Phoenix, April 7, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.
Waverly Phoenix, March 31, 1897
Waverly Phoenix, March 31, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.
Waverly Phoenix, March 24, 1897
Waverly Phoenix, March 24, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.
Waverly Phoenix, March 17, 1897
Waverly Phoenix, March 17, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.
Waverly Phoenix, March 10, 1897
Waverly Phoenix, March 10, 1897
Waverly Phoenix
The Waverly Phoenix was a Democratic weekly German-language newspaper published from 1884 to 1924 in Waverly (Bremer County), Iowa. Articles in the newspaper reflect the experiences and viewpoints of first- and second-generation German immigrants who had settled in Iowa.