The origin and history of continental masses and ocean basins are matters of large concern to students of the Earth, who will give attention to W. G. Woolnough’s recent excursion into this fascinating but speculative field.3 Even though such discussions can lead to no positive conclusions, they stimulate us to re-examine our globes and our major geologic concepts.
Woolnough presents once more the tetrahedral hypothesis, which in his view has not received from geologists the attention it merits. He suggests that imperfect development of the tetrahedral form resulted in large part from an accident in an early stage of...
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