Vol. 239, Issue 9, 1941 | Published by American Journal of Science

Science Paper
Dolomite Orientation in Deformed Rocks
Harold William FairbairnHerbert Edwin Hawkes
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Science Paper
Apparatus for Determination of Small Quantities of Radium
William Donald UrryCharles Snowden Piggot
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Science Paper
A Metamorphic Origin of Selenite
Harold Caswell Cooke
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Science Paper
A Case of Inversion of Suture Lines in Hysteroceras Varicosum (Sow.)
Otto Haas
A specimen of Hysteroceras varicosum var. angolana n. var. from Hanha, Lobito bay, Angola, shows inversion of suture lines.
Science Paper
The Brain of Pterodactylus
Tilly Edinger
The investigation of the neurocranium of a Pterodactylus elegans and a comparative review of the figures of other Pterodactylus skulls and of the yet undescribed endocranial casts furnish a complete...