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Occurrence Of Zinc In Northeastern Iowa, A. G. Leonard

Proceedings of the Iowa Academy of Science

In the Upper Mississippi Valley for a considerable period after the mines began to be operated much more lead than zinc was produced. It was not until 1860 that the latter metal came into market. Since then the zinc production has rapidly increased. During the ten years previous to 1882 the output of zinc more than doubled that of lead, while in 1889, according to the last federal census report the proportion between the two was as 18 to 1 for the entire region.

Proceedings Of The Eighth Annual Session Of The Iowa Academy Of Sciences; Staff & Committee Reports

Proceedings of the Iowa Academy of Science

The eighth annual session of the Iowa Academy of Sciences was held in Des Moines, December 26 and 27, 1893. The following papers, read in full or by title, were, by action of the Executive Committee, referred to the Secretary for publication.

Addition To Iowa Flora, B. Fink

Proceedings of the Iowa Academy of Science

In my collecting last summer about Fayette, I found the following plants, some of which, so far as I know, have not been reported for Iowa. Those marked with a "star" have been examined by various botanists. The others I report on my own determination.

Higher Education In Iowa, Leonard F. Parker

Iowa Book Gallery

A history of higher education in Iowa and descriptions of higher education institutions up to 1893, including faculty, student populations, buildings, and courses of study.

Title Pages, Herbert Osborn

Proceedings of the Iowa Academy of Science

No abstract provided.

Experimental Engineering At The Iowa Agricultural College, G. W. Bissell

Proceedings of the Iowa Academy of Science

Experimental engineering at the Iowa Agricultural College is of two kinds. The first kind has for its object the instruction of the student in the use of and calibration of the instruments employed, and in the performance by improved methods of a series of graded experiments whose variety and selection are such as experience has shown to be productive of the best results attainable with the facilities of the laboratory.

Notes On The Lower Strata Of The Devonian Series In Iowa, William Harmon Norton

Proceedings of the Iowa Academy of Science

In a report recently made to the State Geological Survey, the writer communicates in detail some facts regarding the brecciated zone of the Devonian in Linn county, Iowa, and the terranes subjacent. The following is in part a brief summary of this report.

Process Of Formation Of Certain Quartzites, Charles R. Keyes

Proceedings of the Iowa Academy of Science

In the extreme north western corner of Iowa there is a small area of very hard, thoroughly vitreous rock, which has been known for more than a quarter of a century as the Sioux quartzite. The mass is also well exposed in the adjoining portions of Minnesota and South Dakota. The Sioux "granite," as it is now locally called among quarrymen, is of considerable interest for the reason that it has long been the only altered formation known within the limits of Iowa. The apparent metamorphic characters of the quartzite beds is all the more remarkable from the fact that …

Origin Of The Present Drainage System Of Warren County, J. L. Tilton

Proceedings of the Iowa Academy of Science

Synopsis:

First - In Warren County the drift is of uneven depth. As in other drift areas, this unevenness is not dependent entirely on the pre-glacial surface. In the unconformity of the drift on this pre-glacial surface a relation is seen indicating a similarity between the present drainage system and the pre-glacial drainage system. Second - The present river valleys and larger ravines are larger than present streams require. They fit into the pre-glacial valleys. Third - ln the smaller ravines only do we find erosion without regard to the pre-glacial configuration of the county.

Structure Of The Mystic Coal Basin, H. Foster Bain

Proceedings of the Iowa Academy of Science

The lower measures of the Iowa-Missouri coal field consist of a series of sandstones, shales, fire clays and coal beds, which have been found to interlock in a characteristically irregular manner. The different individual beds have, with rare exceptions, only a limited extent, and frequently grade into each other in a mariner making their stratigraphy quite complex. This variability has been recognized by many workers and has recently been elaborated so fully that only a reference is necessary in this connection.

Occurrence In Iowa Of Fossiliferous Concretions Similar To Those Of Mazon Creek, Arthur C. Spencer

Proceedings of the Iowa Academy of Science

The wide celebrity of the fern-bearing concretions from the Carboniferous beds of Mazon Creek, Illinois, attaches more than passing interest to the occurrence of similar structures in the Coal Measures of Iowa.

Evidences Of Disturbance During The Deposition Of The Burlington Limestones, F. M. Fultz

Proceedings of the Iowa Academy of Science

In a general way the lithological characters of the Burlington limestones, including both the lower and upper divisions, are the same. It is true that some layers are more compact than others, some more massive and a few are even crystalline enough in texture to imperfectly resemble marble, yet they all owe their origin to the same source. The material comprising them is almost wholly crinoidal. To such an extent is this true, that, with the exception of a very few layers, it is scarcely possible to find a cubic inch of rock that does not show its crinoidal origin. …

Coal Measures Of Poweshiek County, Arthur J. Jones

Proceedings of the Iowa Academy of Science

21. Coal measures

Nearly all of Poweshiek County is covered by loess and drift to such a depth that little is known concerning the underlying stratified formations. Almost the only natural exposures of rock in the county are in the southwestern part where there are frequent outcroppings of Saint Louis limestone and Coal Measure strata; for the remainder of the county the only data obtainable are from wells sunk in various places. From these it appears that the northern, middle and eastern portions of the county are underlaid immediately below the drift with Lower Carboniferous strata. The Saint Louis limestone …

North American Cycads, Thomas H. Macbride

Proceedings of the Iowa Academy of Science

As is well known the Cycadaceae constitutes a small section of the gymnospermous plants. They are therefore, related on the one hand to the Gnetaceae or joint-firs, and on the other to the Coniferae, the conifers, our familiar pines, cedars, firs and yews. The Cycads are, however, both in habit and structure quite unlike in many ways, all other existent plants. Nevertheless the fruit is borne in cones as in the Conifers, and their stems, such stems as they have, are full of a gummy, resinous (?) sap, and the general structure of the wood, the disposition of the medullary …

Powdery Mildew Of The Apple, L. H. Pammel

Proceedings of the Iowa Academy of Science

The past season was very favorable for the development of the Powdery Mildews. During the month of September Mr. G. W. Carver, a special student in the botanical laboratory, brought in a fine lot of The Apple Powdery Mildew. An Erysiphe and the common Powdery Mildew of the cherry, Podosphaora oxyacanthae, have been reported on Pyrus malus. But our fungus does not belong to either of these genera. It agrees with the descriptions given for Spherotheca mali (Duby) Burrill. It is easily recognized by its persistent perithecia, two kinds of appendages. The long appendages come from the upper end; they …

Further Notes On Cladosporium Carpophilum - Vonthuemen, L. H. Pammel

Proceedings of the Iowa Academy of Science

This fungus was first recorded on the native plum (Prunus americana), in a short note presented to the Academy some years ago. I thought at first that the fungus on the plum and cherry might prove to be a new species, but I cannot see how the fungus differs materially from that found on the peach.

Observations On The Pollination Of Some Of The Compositae, Mary Alice Nichols

Proceedings of the Iowa Academy of Science

The brilliant appearance of our western roadsides and prairies from July to October, invites an extended study of the anatomy and physiology of the Compositae. The wide distribution and rapid increase of this family naturally call attention to dissemination and pollination. Darwin, Herman Mueller, and others, have shown at length, the direct relation between special adaptations for cross-pollination and the race stability of plants. The question now arises, what are the opportunities for cross-pollination in Compositae, and to what extent is this agent a factor on the increase and distribution of the family? No attempt is here made to go …

The Paraffine Method Applied To The Study Of The Embryology Of The Flowering Plants, H. W. Norris

Proceedings of the Iowa Academy of Science

These few notes are given, not that they contain much if anything new, but simply as the record of a year's experimenting. The difficulties connected with the use of paraffine in the sectioning of plant tissue are well known to all students in botanical microscopy. The cutin, cork, etc. of the cell wall resist penetration. The heat necessary to melt paraffine often renders the tissue too hard and brittle for successful manipulation. Freehand sectioning is often the only available method. Frequently this is all sufficient. Celloidin (or collodion) is available for imbedding young and soft tissues, requires no heat and …

The Development Of The Auditory Vesicle In Necturus, H. W. Norris

Proceedings of the Iowa Academy of Science

Owing to the lack of a complete series of embryos, T have been unable to trace the earlier stages of the development of the ear. In all the Amphibia, so far as studied, unless we except the species of Axolotl figured by Houssay, and he was doubtless in error, the ear arises as a differentiation of the inner of the two layers into which the ectoderm is early divided. This inner sensory layer thickens on each side of the head so as to form a small sensory tract, the anlage of the ear, closely analogous, if not homologous, in formation …

An Instance Of The Persistence Of The Ductus Venosus In The Domestic Cat, H. W. Norris

Proceedings of the Iowa Academy of Science

After injecting with starch-mass through the right femoral vein it was found that the entire arterial system of the cat was filled with starch. Investigation showed the presence of good sized functional ductus venosus through which the arterial and venous systems communicated. The individual possessing this peculiarity was, in life, troubled with what is vulgarly called "fits," whatever that may have been in this particular case. I should be loath to admit any relation between "fits" and the presence of a functional ductus venosus without more extended data.

The Johns Hopkins Biological Laboratory, W. S. Windle

Proceedings of the Iowa Academy of Science

For the past fifteen years it has been customary for the members of the biological department of Johns Hopkins University to devote their summer vacations to pursuing their studies upon the sea shore, where living marine animal forms may be secured for daily use.

The Homology Of The Inca Bone, C. C. Nutting

Proceedings of the Iowa Academy of Science

About two years ago, while examining the interesting series of prehistoric skulls in the collection of the Davenport Academy of Sciences, the writer became involved in an attempt to account for the supernumerary bone which someone has marked the “inca” bone. What the significance of the name may be, I do not know, but the significance of the fact is the object of the inquiry involved in this paper.

Additions To The Known Species Of Iowa Ichneumonidae, Alice M. Beach

Proceedings of the Iowa Academy of Science

The list herewith presented embraces those species taken in Iowa which are not recorded in the Catalogue of Iowa Animals, prepared by Prof. Herbert Osborn and published in 1892.

Rhus Typhina Linn, T. H. Macbride

Proceedings of the Iowa Academy of Science

Rhus typhina is a northern plant, ranging from New Brunswick to Minnesota. It comes into Iowa in the northern counties only, being found in Allamakee and Clayton counties, but, so far as reported, nowhere else. The plant along the bluffs of the Mississippi River rises to a height of some thirty feet and has a stem at base six inches in diameter. It is a beautiful shrub or tree, differing, at sight, by its velvety branches and long-pointed leaflets, from the ordinary sumac (Rhus glabra L.) and well worthy a place in our dooryards to say nothing of a wider …

Cardiocarpus In Iowa, Arthur J. Jones

Proceedings of the Iowa Academy of Science

While engaged in geological work in Guthrie County a number of peculiar seed-like structures were collected from a seam of bituminous coal. They occurred in the newly opened mine of Mr. Scott, three miles northwest of Fanslers.

Waverly Phoenix, December 29, 1892

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, December 22, 1892

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, December 15, 1892

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.

Addresses Of Graduates, Class '92, December Section, December 13, 1892, Iowa State Normal School

UNI Commencement Programs

Information relating to events associated with commencement ceremonies at the Iowa State Normal School.

Waverly Phoenix, December 8, 1892

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.