Smithsonian Plant Collections, Guiana Shield

Smithsonian miscellaneous collections

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 ...

The Guiana Shield

Highland areas that serve as sources and boundaries for the great rivers of South America can be broadly divided into two categories based on their geologic age and origin. As reviewed elsewhere in this volume (Chapters 15 and 16), the allochthonous terrains and massive crustal deformations of the Andes Mountains that comprise the extremely high-elevation western margin of South America have th...

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...

Smithsonian Miscellaneous Collections

Smithsonian Miscellaneous Collections