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553. PARKER, G. H., and BURNETT, F. L., 1901. The reactions of 



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554. PARKER, G. H., and METCALF, C. R., 1906. The reactions 



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555. PARKER, G. H., and PARSHLEY, H. M., 1911. The reactions of 



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561. PEARL, R. J., 1903. The movements and reactions of fresh- 



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562. 1904. On the behavior and reactions of Limulus in 



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563. PEARL, R. J., and COLE, L. J., 1901. The effect of very intense 



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565. 1908. Observations on the behavior of the holothurian 



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566. 1910. The reactions of amphibians to light. Proc. Am. 



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