Smithsonian miscellaneous collections
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چکیده
While engaged in the study of the Tertiary fauna of Coos Bay, Oregon, it became necessary for me to investigate the systematic position of certain forms of Volutes which were contained in it. Their relations to certain Upper Cretaceous forms had been assumed and they had even been referred to the same genus. An investigation of the question was made possible by the kindness of Dr. T. W. Stanton, of the U. S. Geological Survey, in whose official province the Cretaceous forms belong and who placed at my disposition for study all the material which he had brought together. 2 An examination of these fossils showed that a larger number of species existed than had been supposed, and that the Upper Cretaceous seems to have been marked by an efflorescence of related large Volutes in all parts of the world where the fauna of that period has been explored. A comparison of these groups of species with each other and with our American forms, a revision of their systematic arrangement, a description of the new species and the application of new names to those forms which had been described in the literature under names not properly applicable to them, have been attempted in the present paper.
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Smithsonian miscellaneous collections
The first part of this paper deals with the general geology and geography of the region from which the Cretaceous fishes of Ceara come, while the second part is a systematic description of the fishes themselves. The collection is especially important because it contains all of the species hitherto described from Ceara, besides three new genera and four new species. The large number of duplicate...
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By doctor E. MASCHA [The following paper on the " Structure of Wing-Feathers " gives an account of an investigation conducted by Doctor E. Mascha under the direction of Professor R. von Lendenfeld, of the Imperial German University in Prague. The original German text of this paper is to be published in the Zcitschrift fiir zvisscnschaftUchc Zoologic. Doctor von Lendenfeld, who was a competitor ...
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PURPOSE OF THE PAPER The quantitative investigation of the relationship between the amount of water vapor in the terrestrial atmosphere and the corresponding changes in the transmissibility of the latter to the incoming solar energy, is the primary object of this paper. Bouguer's formula, which will later be treated in detail, furnishes an analytical means for this study. As generally used, how...
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