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(1930) The dark adaptation of the eye of Limulns as manifested by its 



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(1934) Intensity and duration in the excitation of single photoreceptor units. 



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(1935) The discharge of nerve impulses from the single visual sense cell. 



Cold Spring Harbor Symposia Quant. Biol., 3: 245-250. 



(1938) The discharge of impulses in the optic nerve of Pecten in response to 



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(1948) Retinal action potentials of photoreceptor cells and the discharge of 



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(1921a) Time and intensity in photosensory stimulation. J. Gen. Physiol., 



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