BIBLIOGRAPHY 229 



TSCHERMAK, E., " tjber kiinstliche Kreuzung bei Pisum sativum," 

 Zeitschrift Landurirthschaft Versuchsicesen in Oesterreich, iii., 1900. 



TUTT, J. W., Entomologist's Record, vol. i., 1890-91. 



VKBNON, H. M., Variations in Animals and Plants, Kegan Paul & Co., 

 London, 1903. 



VKRWORN, M., "Die physiologische Bedeutung des Zellkerns," Archiv fur 

 die yesammte Physiologic, ii. 1891. 



VOISIN and PKRON, Archives de Neurologic, xxiv., 1892, and xxv., 1893. 



VOISIN, " L'Epilepsie," Paris, 1897. 



VRIES, H. DE, " Sur la loi de disjonction des Hybrides," Comptes Remlti* 

 Acad. des Sciences Paris, cxxx., 1900 ; Die Mutations-theorie, 2 vols., 

 Leipzig, vol. i., 1901, vol. ii., 1903 ; Species and Varieties: Their Origin 

 by Mutation, Chicago and London, 1905. 



WALKER, C. E., The Essentials of Cytology, Constable, London, 1907 ; 

 " The Influence of the Testis upon the Secondary Sexual Characters 

 of Fowls," Proceedings of the Royal Society of Medicine, April 1908. 

 See also FARMER, MOORE, and WALKER, and MOORE and WALKER. 



WAUREN, E., "An Observation on Inheritance in Parthenogenesis," 

 I 'rc. Roy. Soc., Ixv., 1899. 



WEISMANN, A., The Germ Plasm: A Theory of Heredity, English transla- 

 tion, 1893, German edition, 1892; The Theory of Evolution, English 

 translation, Arnold, London, 1904. 



WKLDON, The Lancet, March 25, 1905. 



WHEELER, W. M., Ants : Their Structure, Development and Behaviour, New 

 York, Columbia University Press, 1910. 



WILSON, E. B., "On Cleavage and Mosaic Work," Arch. f. Entwick., 

 iii., 1, 1896; "Experimental Studies on Germinal Localisation 

 (1) The Germ-Regions in the Eggs of Dentalium ; (2) Experiments 

 on the Cleavage-Mosaic in Patella and Dentalium," Journal of Ex- 

 perimental Zoology, vol. i., 1904 ; The Cell in Development and Inherit- 

 ance, Macmillan, London and New York, 1904 ; " Studies on 

 Chromosomes," I., Journal of Exper. Zool., vol. ii., No. 2, 1905 ; 

 " Studies on Chromosomes," II., vol. ii. No. 4 ; " Studies on 

 Chromosomes," III., vol. iii., No. 4, 1906; "Recent Researches on 

 the Determination and Heredity of Sex," Science, N.S., vol. xxix., 

 No. 732, January 1909. 



WOLFF, GUSTAV, "Die Regeneration der Urodelenlinse," Archiv f/ir 

 Entivicklungsmechanik, i. 3, 1895. 



YUNG, E., "De I'influence des variations du milieu physico-chimique sur 

 le dt-veloppement des animaux," Arch. Sci. Phys. Nat., xiv., 181)5. 



ZIEGLEK, H. E., "Die Chromosomen Theorie der Vererbung in ihrer 

 Anwendung auf den Menschen," Archiv. Rassen - yesdlschaftliche 

 Biologie, vol. iii. pp. 797-812 ; Die Vererbungsleliere in der Biologie 

 Fischer, Jena, 1905. 



ZOJA, R., " Sullo sviluppo dei blastomeri isolati dalle nova di alcune 

 Meduse," Arch. f. Entwick., i. 4, ii. 1 and 4, 1895 ; " Sulla indepen- 

 denza della chromatina paterna e materna nel nucleo delle celluje 

 embrionali, Anatomischer Anzeiger, xi., 10, 1905. 



