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Striation Of Rocks By River Ice, J. E. Todd Jan 1890

Striation Of Rocks By River Ice, J. E. Todd

Proceedings of the Iowa Academy of Science

Though it is commonly admitted by geologists, that both land-ice and floating ice are capable of striating rocks, when armed with erratics; careful discriminations seem to be largely neglected. The question, whether river-ice was ever the active agent in scratching rocks, had been raised in the writer's mind several years since by a few observations in Dakota. Diligent search at several seemingly favorable localities had given only negative evidence, until this past season, when two or three observations seem to demonstrate the fact that such is not very infrequently the case.

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Preliminary Note On The Sedentary Habits Of Platyceras, Charles R. Keyes Jan 1890

Preliminary Note On The Sedentary Habits Of Platyceras, Charles R. Keyes

Proceedings of the Iowa Academy of Science

Platyceras is a generic term which has been proposed for a Paleozoic group of mollusks whose shells are "sub-oval or sub-globose, with a small spire, the whorls of which are sometimes free and sometimes contiguous; the mouth generally campanulated or expanded." These fossil shells have been frequently referred to the genus of modern mollusca known as Capulus. In the case of Platyceras as in many other Paleozoic genera, numerous species have been based, not on any apparent distinctive character, but seemingly simply on their occurrence at different geological horizons; and this has given rise to the establishment of many species …

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The Fishes Of The Des Moines Basin, R. Ellsworth Call Jan 1890

The Fishes Of The Des Moines Basin, R. Ellsworth Call

Proceedings of the Iowa Academy of Science

To one familiar with so much of the literature of science as pertains to the natural history of the State of Iowa it is surprising that so little has been done in relation to its fishes. A list designed to stand for the icthyic fauna of the State has yet to be compiled. There have appeared but three papers devoted to Iowa fishes. Of these three one was published under the auspices of the United States National Museum, the others were both published in Iowa, under Iowa auspices and by an Iowa man. The first of these papers lists thirty …

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A New Conocardium From The Iowa Devonian, Charles R. Keyes Jan 1890

A New Conocardium From The Iowa Devonian, Charles R. Keyes

Proceedings of the Iowa Academy of Science

Shell of medium size, subtrigonal, anterior view broadly cordate. Anterior end truncate, with a forward slope from the umbones to the lower anterior sharply rounded extremity. Dorsal margin behind the beaks slightly curved, with the edges of the valves incurved while in front of the beaks it is produced forward into a more or less prominent alate extension; basal margin crenate within; posterior extremity at the hinge line decidedly angular. Beaks rather prominent, gibbous, incurved. Hiatus lanceolate; occupying about two-thirds of the lower posterior margin. Surface marked by simple, regular, radiating costae, about forty in number, twenty-five of which occupy …

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Some Of The Causes And Results Of Polygamy Among The Pinnipedia, C. C. Nutting Jan 1890

Some Of The Causes And Results Of Polygamy Among The Pinnipedia, C. C. Nutting

Proceedings of the Iowa Academy of Science

Several years ago the writer was much struck by the great sexual differences met with among the Gallinae, and had noted the fact that there was a relation between sexual disparity in size and polygamy.

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Egg-Laying Of The Apple Curculio (Anthonomus Quadrigibus Say), C. P. Gillette Jan 1890

Egg-Laying Of The Apple Curculio (Anthonomus Quadrigibus Say), C. P. Gillette

Proceedings of the Iowa Academy of Science

I am not aware that anyone has published actual observations on the method of oviposition by this insect. On the 13th of June, 1889, I was fortunate enough to see a female perform the entire operation which was as follows: First a cavity was eaten in the apple as deep as the beak was long, the bottom being much enlarged and sub-triangular in outline. The walls of the cavity converged to the opening which was only large enough to admit the slender beak.

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Contribution To The Fauna Of The Lower Coal Measures Of Central Iowa, Charles R. Keyes Jan 1890

Contribution To The Fauna Of The Lower Coal Measures Of Central Iowa, Charles R. Keyes

Proceedings of the Iowa Academy of Science

Among a large number of species recently discovered in the lower coal measures near Des Moines are some hitherto unrecognized forms. The following are the descriptions of three of the most important shells.

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Notes On The Redrock Sandstone, Charles R. Keyes Jan 1890

Notes On The Redrock Sandstone, Charles R. Keyes

Proceedings of the Iowa Academy of Science

The sandstone of Redrock, in Marion County, Iowa, has long attracted popular attention. The bright vermillion cliffs rise to a height of one hundred to one hundred and fifty feet above the water surface of the Des Moines River. The red coloration of the rock, however, is (?). The formation has a known geographic extent of at least twenty miles; and probably stretches out much farther. At Redrock Cliff the stone is massive for the most part, but rather soft and thin-bedded above. At this place it is a very fine grained and homogeneous sand rock, some portions even affording …

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Brick And Other Clays Of Des Moines, Charles R. Keyes Jan 1890

Brick And Other Clays Of Des Moines, Charles R. Keyes

Proceedings of the Iowa Academy of Science

In the absence of extensive exposures of good building stone, in the immediate vicinity of many of the larger cities of the State, architectural materials must be derived in large part always from other sources. Fortunately in and about these towns there are exhaustless supplies of good clays from which may be manufactured easily the ordinary structural and ornamental materials. These clays, however, as is well known, have diverse properties, certain ones being better adapted for particular purposes than others, while some may be used more advantageously in different ways. Hence the indiscriminate working of the deposits is not attended …

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Notes On Missouri Minerals, Erasmus Haworth Jan 1890

Notes On Missouri Minerals, Erasmus Haworth

Proceedings of the Iowa Academy of Science

At various places in the Archaean areas of Missouri the granites and porphyries are cut by dikes of basic rocks which usually trend N. E. and: S. W. but occasionally in other directions. The dike rocks are comparatively constant in composition. When holo-crystalline they are a diabase, or an olivine diabase, and when less perfectly crystallized they generally correspond to diabase porphyrite.

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Aluminum In Iowa, Charles R. Keyes Jan 1890

Aluminum In Iowa, Charles R. Keyes

Proceedings of the Iowa Academy of Science

Attention is called to the birth of an industry in Iowa that promises to be one of the greatest industries of the State in the near future. It is the establishment of a plant for the production of aluminum. As is well known, this metal is soon to be the metal of the world-replacing largely iron, steel and other metallic substances used in the arts. The properties of aluminum need not be dwelt upon here. The cost of producing the metal has hitherto been the great drawback to its general usage. A few years ago the price was $15.00 or …

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Phaenological Notes, L. H. Pammel Jan 1890

Phaenological Notes, L. H. Pammel

Proceedings of the Iowa Academy of Science

Among the many interesting observations in connection with our flora is the relation that plants have to climatology. It is true the question is an agricultural and horticultural one only so far as it bears on questions of our cultivated plants. But with the addition of new plants every year to our list of those cultivated for utilitarian or ornamental purposes, it is important to record exact data in regard to their behavior under cultivation. But in plant climatology all plants should be studied with reference to various climatic conditions.

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Artesian Wells In Iowa, R. Ellsworth Call Jan 1890

Artesian Wells In Iowa, R. Ellsworth Call

Proceedings of the Iowa Academy of Science

The demand for artesian waters in the State of Iowa is not to be connected with unfavorable climatal conditions. The State is well watered; a considerable number of rather large streams and numerable smaller ones combine to make it, from a hydrographic standpoint, unique among prairie states. The annual rainfall is a little more than thirty-five inches and chiefly comes at a time of year when every crop necessity is fully supplied. The main grounds upon which artesian waters are sought, therefore, are first, the convenience of such flows for farm and urban use, and second, the supposed purity of …

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Observations From The Deck Of A Steamer, L. Otlry Pindar Jan 1890

Observations From The Deck Of A Steamer, L. Otlry Pindar

Wilson Bulletin

No abstract provided.

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How The Cooper's Hawk Hunts His Prey, H. H. Brimley Jan 1890

How The Cooper's Hawk Hunts His Prey, H. H. Brimley

Wilson Bulletin

No abstract provided.

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Among The Gulls At Duck Island, Cilas S. Butters Jan 1890

Among The Gulls At Duck Island, Cilas S. Butters

Wilson Bulletin

No abstract provided.

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Massachusetts Assembly, Wilson Bulletin Jan 1890

Massachusetts Assembly, Wilson Bulletin

Wilson Bulletin

No abstract provided.

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The Open Court. Jan 1890

The Open Court.

The Open Court

No abstract provided.

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Geological Structure And Relations Of The Coal-Bearing Strata Of Central Iowa, Charles R. Keyes Jan 1890

Geological Structure And Relations Of The Coal-Bearing Strata Of Central Iowa, Charles R. Keyes

Proceedings of the Iowa Academy of Science

The exposed stratified rocks of central Iowa are made up chiefly of Lower Coal Measure clays, shales and sandstone. In the southeastern portion of the area the upper member (for Iowa) of the Sub-Carboniferous – The St. Louis limestone – is exposed along the Des Moines River. To the westward the socalled Middle Coal Measures and the Upper Coal Measures are represented. Hitherto it has been supposed that the three recognized divisions of the upper Carboniferous rocks in the State have each a maximum thickness of about two hundred feet. Lately, however, the Upper Coal Measures alone have been discovered …

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On The Orthopterous Fauna Of Iowa, Herbert Osborn Jan 1890

On The Orthopterous Fauna Of Iowa, Herbert Osborn

Proceedings of the Iowa Academy of Science

The orthoptera are among the most important of the injurious insects of this State, almost all of the species being destructive, and scarcely one that can be considered as of any benefit. A list of the species occurring in the State is therefore of more than scientific interest and becomes important while considering the distribution of the destructive species. The present notes refer almost entirely to the central part of the State, principally in the vicinity of Ames, and there are, doubtless, many other species to be secured by careful collection with special reference to this group in this locality, …

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Floating Feathers From The West, Chas. A. Keeler Jan 1890

Floating Feathers From The West, Chas. A. Keeler

Wilson Bulletin

No abstract provided.

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The Belted Kingfisher, Ceryle Alcyon Jan 1890

The Belted Kingfisher, Ceryle Alcyon

Wilson Bulletin

No abstract provided.

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Winter Birds Of Raleigh, N. C., C. S. Brimley Jan 1890

Winter Birds Of Raleigh, N. C., C. S. Brimley

Wilson Bulletin

No abstract provided.

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The Golden Eagle (Aquila Chrysaetos), Geo. F. Breninger Jan 1890

The Golden Eagle (Aquila Chrysaetos), Geo. F. Breninger

Wilson Bulletin

No abstract provided.

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The Nidification Of The Golden Eagle, W. Raine Jan 1890

The Nidification Of The Golden Eagle, W. Raine

Wilson Bulletin

No abstract provided.

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Notes On Breeding Habits Of Brown-Headed Nuthatch At Thomasville, Georgia., C. J. Pennock Jan 1890

Notes On Breeding Habits Of Brown-Headed Nuthatch At Thomasville, Georgia., C. J. Pennock

Wilson Bulletin

No abstract provided.

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July Prize Questions, Wilson Bulletin Jan 1890

July Prize Questions, Wilson Bulletin

Wilson Bulletin

No abstract provided.

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Editor's Desk, Wilson Bulletin Jan 1890

Editor's Desk, Wilson Bulletin

Wilson Bulletin

No abstract provided.

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Book Review, Wilson Bulletin Jan 1890

Book Review, Wilson Bulletin

Wilson Bulletin

No abstract provided.

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Department Of The Wilson Ornithological Chapter Of The Agassiz Association, Wilson Bulletin Jan 1890

Department Of The Wilson Ornithological Chapter Of The Agassiz Association, Wilson Bulletin

Wilson Bulletin

No abstract provided.

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