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Biol Bull 70: 408-412. (June 1936)
© 1936 Marine Biological Laboratory
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RESPONSE TO LIGHT IN PERANEMA TRICHOPHORUM

I. RELATION BETWEEN DARK-ADAPTATION AND SENSITIVITY TO LIGHT

S. O. MAST 1 and BRAINARD HAWK 1

1 From the Zoölogical Laboratory of the Johns Hopkins University

If light-adapted specimens of Peranema trichophorum are subjected to darkness, the sensitivity to light increases rapidly to maximum (as the time in darkness increases), then decreases slowly to minimum after which it remains nearly constant. The sensitivity reaches maximum after about one hour in darkness and minimum after about four hours.






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Copyright © 1936 by the Marine Biological Laboratory.