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    • Photoperiodic Responses of Plants and Animals - Nature

      Nature· 16 hours ago

      INTERRUPTION of the dark period of a 24-hr, cycle with visible radiation has been found to control reproduction in representatives of the Spermatophyta, Chordata, Arthropoda and Mollusca. Elongation ...

    • The Coral-Reef Problem - Nature

      Nature· 17 hours ago

      FROM time to time recent work on the topography of coral-reefs has been referred to in NATURE, and the existence of submarine platforms from which atolls and encircling reefs rise has been very ...