This common fossil of the Guelph of Canada has not been noted in the Le Claire beds of Iowa, or their immediate extension into adjacent states. Its occurrence, therefore, at Port Byron, Illinois, in the Barrett quarries one and one-half miles north of the town, is of special interest, since it shows a range much further to the west than hitherto observed, and a co-mingling of the Guelph and Niagara faunas in the Le Claire, similar to that in the so-called Guelph of Wisconsin. The specimens are well preserved, casts of the normal type not conforming to the variety of …

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An Orang Hunt In Borneo, Frank S. Bourns Jan 1894

An Orang Hunt In Borneo, Frank S. Bourns

Journal of the Minnesota Academy of Science

No abstract provided.

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Chemical Analysis Of Soils, G. E. Patrick Jan 1894

Chemical Analysis Of Soils, G. E. Patrick

Proceedings of the Iowa Academy of Science

There is hardly a subject upon which the opinions of chemists differ more widely than upon that of the utility of soil analysis, as a means of judging of the present crop-producing power of soils, or of ascertaining in what particular element or elements their store of available plant-food most needs replenishing in order to restore or increase fertility. This difference of opinion is not because any one questions the efficiency of chemical analysis in determining the total amount of the several plant-food elements present in the soil. That is easily done. The difficulty lies in determining how much of …

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Geological Section Of The Y.M.C.A. Artesian Well At Cedar Rapids, Iowa, Wiliam Harmon Norton Jan 1894

Geological Section Of The Y.M.C.A. Artesian Well At Cedar Rapids, Iowa, Wiliam Harmon Norton

Proceedings of the Iowa Academy of Science

The record of this well is of special importance because it supplements and corrects the published records of the earlier city wells. It is based almost wholly upon drillings taken at frequent intervals directly from the sand pump. Unfortunately samples of the first ninety feet were not saved, within which space the drill must have passed through the beds lying between the lowest recognized Devonian and the Le Claire beds of the Upper Silurian. The interval, in part at least, can be supplied from outcrops in the immediate vicinity.

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Table Of Contents Jan 1894

Proceedings of the Iowa Academy of Science

No abstract provided.

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Preglacial Elevation Of Iowa, H. Foster Bain Jan 1894

Preglacial Elevation Of Iowa, H. Foster Bain

Proceedings of the Iowa Academy of Science

The long period intervening between the deposit of the Cretaceous rocks of Iowa and the advent of the glaciers has left in this state no record in deposits. Its history must be gathered entirely from the land forms then created, and from inferences drawn from orographic changes known to have taken place in other regions.

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Nitrogen Compounds Of The Soil, D. B. Bisbee Jan 1894

Nitrogen Compounds Of The Soil, D. B. Bisbee

Proceedings of the Iowa Academy of Science

In examining for ammonia a soil-extract, prepared by digesting soil for three days in dilute HCl, the author noticed that Schloesing's method (distilling the extract with excess of MgO) gave a continuous separation of ammonia, amounting in this case to.0024 per cent. Another portion of the extract was filtered after the addition of MgO and before boiling. In it the separation of ammonia ceased after boiling a comparatively short time, and the total separated was.0017 per cent. The evident inference is that "part of the amides in Schloesing's extract can be precipitated by magnesia; and, by the second method ‘results …

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Effects Of Heat On The Germination Of Corn And Smut, F. C. Stewart Jan 1894

Effects Of Heat On The Germination Of Corn And Smut, F. C. Stewart

Proceedings of the Iowa Academy of Science

Bunt and smut of oats are successfully combatted by treating the seed with hot water previous to planting. Since the discovery of this method by Jensen, a great many experiments have been made both in Europe and America. The success with bunt and oats smut naturally directed the attention of investigators to hot water treatment for corn smut, but experiments made by Pammel and others proved it to be ineffectual.

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