Bibliography 371 



PATTEN, W. S. 



1909. Herpetomonas lyyaei. Arch. f. Prot'k., Bel. 13, pp. 1-18. 

 PAYNE, F. 



1909. Review: Meves' The Chondriosomes as Bearers of Hered- 

 itary Qualities. Am. Nat., v. 43, pp. 190-193. 

 PECKHAM, GEO. W., and ELIZABETH S. 



1905. Wasps, Social and Solitary. Boston and Xew York. 

 PEARL, R. 



1915. Modes of Research in Genetics. Xew York. 

 PFEFFER, W. 



1900. The Physiology of Plants (Ewart trans.). Oxford. 

 PFLUGER, E. 



1875. Ueber die physiologische Yerbrenmmg in den lebendigen Or- 



ganismen. Arch. f. ges. Physiol., Bd. 10. 

 PHLEPS, ED. 



1913. Die Tetanic, in Innere Sekretion nnd Xervensystem. Berlin. 



PlLLSBURY, W. B. 



1908. Attention. Xew York. 

 PUTTER, A. 



1900. Studien iiber Thigmotaxis bei Protisten. Arch. f. Anat. u. 

 Physiol., Physiol. Abt., Supp. Bd., pp. 241-302. 



RAND, *H. W. 



1904. The behavior of the epidermis of the earthworm in regenera- 

 tion. Arch. f. Entw'mch. Bd. 19, pp. 16-57. 



REICHERT, E. T., and BROWN, A. P. 



1909. The Differentiation and Specificity of Corresponding Pro- 

 teins and Other Yital Substances in Relation to Biological Classifi- 

 cation and Organic Evolution: The Crystallography of Hemoglobins. 

 Carnegie Inst. Publ. 116. Washington. 



RETZIUS, G. 



1909. Biologische Untersuch. Die Spermien des Menschen, Bd. 14, 

 p. 205. 



R HUMBLER, L. 



1912. 1 Organe des tierisclten Ktirpers. In Hdwb. d. Naturw. 



1912. 2 Correlation. Ibid. 

 RIDDLE, O. 



1914. The determination of sex and its experimental control. Bull. 

 Am. Acad. Med., v. 15, no. 5. 



RITTER, W. E. 



1893. Tunicata of the Pacific Coast of Xorth America. 1. Pero- 



phora anneetem n. sp. Proc. Cal. Acad. Sci., ser. 2, v. 4, pp. 37-85. 



1896. Budding in compound ascidians, based on studies on Good- 



siria and Perophora. Jour. Morph., v. 12, pp. 149-238. 



1909. Halocynthui Johnxoni n. sp. A comprehensive inquiry as to 



the extent of law and order that prevails in a single animal species. 



Univ. Cal. Publ. Zool., v. 6, no. 4, pp. 65-114. 



1918. a The Higher Usefulness of Science. Boston. 



1918. 2 The Probable Infinity of Xature and Life. Boston. 

 RITTER, W. E., and FORSYTII, R. 



1917. Ascidians of the littoral zone of southern California. Univ. 



Cal. Publ. Zool., v. 16, no. 24, pp. 439-512. 



