256 bulletin: museum of compakative zoology. 



Wlassak, R. 



'98. Die Herkunft des Myelins. Ein Beitrag zur Pliysiologie des nervosen 

 Stutzge^Yebes. Arcli. f. Eutw.-Mecb. Orgauis., Bd. 6, pp. 453-i93, Taf. 

 26-29. 



Wright, R. R. 



'84. Oil the Nervous System and Sense Organs of Ameiurus. Proc. Canad. 

 Inst. Toronto, Vol. 2, No. '6, pp. 352-386, pis. 4-6. 



Wundt, W. 



'76. Untersucliungen zur Meclianik der Nerven uud Nerveucentren. 8°, 

 Stuttgart. I. Abtli., ix + 278 pp. ; IT. Abth., iv + 144 pp. 



Yerkes, R. M. 



:02. The Instincts, Habits, and Reactions of the Trog. Harvard Psychol. 

 Studies, Vol. 1, pp. 579-638. 



