Entire DC Network | Open Access Articles | Digital Commons Network™

Summary Of The Archaeology Of Iowa, Frederick Starr

Iowa Book Gallery

A county-by-county summary of archaeological findings in Iowa.

Go to article

Title Page - Letter Of Transmittal, Herbert Osborn

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Officers Of The Academy

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Constitution Of The Iowa Academy Of Sciences

Proceedings of the Iowa Academy of Science

No abstract provided.

Go to article

Proceedings Of The Tenth Annual Session Of The Iowa Academy Of Sciences: Staff & Committee Reports, C. C. Nutting, C. O. Bates, A. C. Page

Proceedings of the Iowa Academy of Science

The tenth annual meeting of the Iowa Academy of Sciences was held in the horticultural rooms at the capitol building in Des Moines, January 1, 2 and 3, 1896. During the business sessions the following matters of general interest were acted upon.

Go to article

Annual Address Of The President - Needed Changes In Scientific Methods, H. W. Norris

Proceedings of the Iowa Academy of Science

We live in a period that sees wonderful attainments in science and art, so that in theory and practice many think the summum bonum has been reached. It is pre-eminently the age of science and the application of scientific methods to all phases of human activity. The forces of nature have been made subject to the will of man. The relations of man to his surroundings have been carefully considered. The province of human intellect has been made the ground of scientific investigations. We now see scientific methods foremost and uppermost, and all human thought is more or less permeated …

Go to article

Homologies Of The Cyclostome Ear, H. W. Norris

Proceedings of the Iowa Academy of Science

The ear of the Cyclostomata has until recently been considered so peculiar as to render it difficult to explain its relations to the typical Vertebrate ear. Then again, the diversity of structure in the auditory organ of the Cyclostomes themselves renders the task of homologizing the various parts somewhat uninviting.

Go to article

Origin And Significance Of Sex, C. C. Nutting

Proceedings of the Iowa Academy of Science

This paper is not presented as a contribution to our knowledge of the subject of the origin of sex, so much as an attempt to express concisely a theory of sex drawn from various sources, but principally from a work on the "Evolution of Sex" by Geddes & Thomson, a work which seems to me to mark an epoch in the science of philosophical biology.

Go to article

The Reduction Of Sulphuric Acid By Copper As A Function Of The Temperature, Launcelot W. Andrews

Proceedings of the Iowa Academy of Science

The object of the experiments described in this paper was to determine whether the reduction of sulphuric to sulphurous acid by copper takes place at a lower or at a higher temperature than the incipient dissociation of the former compound into water and the acid anhydride.

Go to article

Recent Discoveries Of Glacial Scorings In Southeastern Iowa, Francis M. Fultz

Proceedings of the Iowa Academy of Science

The discoveries of localities showing glacial scoring in southeastern Iowa have been somewhat numerous during the last few years. In a paper presented before this body a year ago I called attention in detail to the different known exposures of glaciated rock in this region, and pointed out that the testimony they gave was unanimous as to the southeastern movement of the ice sheet. Since then another exposure has been located that seems to bring conflicting testimony.

Go to article

Recent Developments In The Dubuque Lead And Zinc Mines, A. G. Leonard

Proceedings of the Iowa Academy of Science

During the past year or two there have been some important developments in the Dubuque district. New lead mines have been opened up, new ore bodies have been discovered, and the Durango zinc mine, the largest in the state, has been still further developed.

Go to article

The Area Of Slate Near Nashua, N.H., J. L. Tilton

Proceedings of the Iowa Academy of Science

Crosby's map of eastern Massachusetts represents an area of slate, or argillite, as it is termed, running from Worcester through Lancaster and Pepperell to the New Hampshire state line. The eastern part of this argillite, two and one-fourth miles wide on the map, but four miles wide according to the text, continues north into New Hampshire just west of the Nashua River. On the east of the argillite lies mica schist in an area very narrow (three-fourths of a mile) near the state line, but much wider toward the southern part of the township of Dunstable. On the west of …

Go to article

Two Remarkable Cephalopods From The Upper Paleozoic, Charles R. Keyes

Proceedings of the Iowa Academy of Science

There have been recently discovered in the coal measures of Mississippi basin some excellently preserved remains of Cephalopods, which are remarkable on account of the huge size attained. Both are representatives of the retrosiphonate Nautoidea; but one is a member of the most closely coiled end of the series, while the other is a perfectly straight form. The former belongs to the genus Nautilus and the latter to Orthoceras.

Go to article

A Theory Of The Loess, B. Shimek

Proceedings of the Iowa Academy of Science

Some years ago in an article entitled "The Loess and Its Fossils," the writer advanced certain opinions the modification of which seems to be called for by subsequent investigation and thought. In that paper it was shown, principally from a study of the fossils, that the theory of the lacustrine origin of the loess, held with very few exceptions by American writers, is untenable, and that the origin of the loess in violent fluviatile floods, also sometimes suggested, is equally improbable, and the theory was there offered that the deposit was formed in ponds and lakes similar to those which …

Go to article

Perfect Flowers Of Salix Amygdaloides Ands., B. Shimek

Proceedings of the Iowa Academy of Science

A native specimen of Salix amygdaloides Ands. growing in Iowa City, produces peculiar flowers which seem to be worthy of mention. Whereas all Salicaceae habitually produce dioecions flowers, this specimen has, for at least three successive seasons, borne flowers most of which are perfect. The accompanying figures will give a clearer idea of these peculiar flowers.

Go to article

County Parks, T. H. Macbride

Proceedings of the Iowa Academy of Science

The title of this paper would seem to require little definition. By county parks are meant simply open grounds available for public use in rural districts, as are city parks in towns. There is nothing new in the idea; it is simply an effort to call back into public favor the once familiar public "common." This does not, however, refer simply to public land such as government land, to be claimed and plundered by the first comer, nor, indeed, to land to be used by the public indiscriminately at all, but to land devoted to public enjoyment, purely to the …

Go to article

Notes On Forest Distribution In Iowa, T. H. Macbride

Proceedings of the Iowa Academy of Science

The peculiar character of our American forest geography early attracted the attention of intelligent observers. Civilized men, Frenchmen, crossing the continent from the Atlantic seaboard, after threading for two hundred leagues a forest almost unbroken, suddenly found themselves in the presence of vast treeless plains, extending westward across a large portion of the central Mississippi Valley. In wonder and admiration the voyageur looked upon these great plains, grass-grown and flower-bedecked, and found them counterpart to the green meadows of France; to them he gave the name prairie, a word now so familiar as to have long lost for all English-speaking …

Go to article

Some Notes On Chromogenic Bacteria, L. H. Pammel, Robert Combs

Proceedings of the Iowa Academy of Science

Quite a large list of chromogenic bacteria are known to bacteriologists. Many of these are familiar objects in bacteriological laboratories. Of the early works describing these in this country we may mention Sternberg and Trelease. For later works on North American chromogenic bacteria we must refer to Sternberg, Jordan and the numerous text books dealing with pathogenic species.

Go to article

Fungus Diseases Of Plants At Ames, Iowa, 1895, L. H. Pammel, Geo. W. Carver

Proceedings of the Iowa Academy of Science

In previous papers record has been made of the abundance of parasitic fungi for the years of 1891, 1892, 1893 and 1894. We hope to continue these observations for the purpose of making comparison.

Go to article

Some Anatomical Studies Of The Leaves Of Sporobulus And Panicum, Emma Sirrine, Emma Pammel

Proceedings of the Iowa Academy of Science

Numerous writers have called attention to the value of anatomical studies for diagnostic purposes in the recognition of Phaenogams. We may note in this connection the paper by Pfister, who has made a comparative study of the leaves of some palms.

Go to article

Preliminary Notes On The Iowa Entomostraca, L. S. Ross

Proceedings of the Iowa Academy of Science

The careful work done by a few investigators has shown the relation existing between our common fresh water fish and the minute Crustacea of the streams and lakes. The results of these investigations prove the importance of the Entanostraca as a source of food supply for the young fry of many species, and even for the adults of some. The most extensive work upon this subject is that done by Dr. S. A. Forbes of the University of Illinois. An account of the methods pursued and of the results obtained is given in the bulletins of the Illinois State Laboratory …

Go to article

The Anatomy Of Sphaerium Sulcatum Lam., Gilman A. Drew

Proceedings of the Iowa Academy of Science

For a number of years the embryology of the Cyrenidae has been attracting considerable attention, but little has been added to our knowledge of the general anatomy since Dr. Franz Leydig's publication in 1855 (No. 5), who recorded such anatomy as could be made out from young and rather transparent specimens.

Go to article

A Study Of The Genus Clastoptera, Elmer D. Ball

Proceedings of the Iowa Academy of Science

In the development of the hind tibiae and the structure and venation of the wings, the insects under consideration represent the highest and most specialized forms of the Cercopidae if not of the Homoptera; marking, as Uhler suggests, an important advance toward the Heteroptera in the increased freedom of the anterior coxae and the possession of a terminal membrane to the corium.

Go to article

Observations Of The Cicadidae Of Iowa, Herbert Osborn

Proceedings of the Iowa Academy of Science

The members of this interesting group of insects, which contains the largest of our native Homoptera, have at least four representatives in the state of Iowa and it is the intention to call attention to these in this paper and also to put on record some observations regarding their habits and distribution which may serve as a basis for further investigations concerning them.

Go to article

Note On A New Species Of Phloeothrips, With Description, Herbert Osborn

Proceedings of the Iowa Academy of Science

In connection with the paper by Miss Beach on the Thripidae it seems desirable to describe a species which has for a long time been in our collections, but has not received a technical description.

Go to article