Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXVII. No. 8.— October, 1901. 



CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF THE 



MUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD COLLEGE. 

 E. L. MARK, DIRECTOR. — No. 127. 



STUDIES ON THE REACTIONS OF LIMAX MAXIMUS 

 TO DIRECTIVE STIMULI 



By Peter Frandsen. 



