THE DIRECTOR S REPORT. 39 



II. INSTRUCTION 



ROBERT H. BOWEN, Assistant Professor of Zoology, Columbia Uni- 

 versity. 



EDWARD F. ADOLPH, Instructor in General Physiology, University of 

 Pittsburgh. 



J. A. DAWSON, Assistant Professor of Biology, Dalhousie University. 



S. W. GEISER, Assistant Professor of Zoology, Washington Uni- 

 versity. 



ANN H. MORGAN, Professor of Zoology, Mount Holyoke College. 



J. PAUL VISSCHER, U. S. Bureau of Fisheries. (Absent on leave.) 



B. H. WILLIER, Instructor in Zoology, The University of Chicago. 



BENJAMIN P. YOUNG, Assistant Professor of Zoology, Cornell Uni- 

 versity. 



DONNELL B. YOUNG, Assistant Professor of Biology, Carleton College. 



PROTOZOOLOGY 



I. INVESTIGATION 



(See Zoology) 



II. INSTRUCTION 



GARY N. CALKINS, Professor of Protozoology, Columbia University. 

 LOUISE H. GREGORY, Assistant Professor of Zoology, Columbia Uni- 

 versity. (Absent 1923.) 

 FLORENCE DE L. LOWTHER, Instructor in Zoology, Barnard College. 



EMBRYOLOGY 



I. INVESTIGATION 



(See Zoology) 



II. INSTRUCTION 



HUBERT B. GOODRICH, Associate Professor of Zoo[ogy, Wesleyan Uni- 

 versity. 



BENJAMIN H. GRAVE, Professor of Biology, Wabash College. 



HAROLD H. PLOUGH, Associate Professor of Biology, Amherst Col- 

 lege. 



CHARLES G. ROGERS, Professor of Comparative Physiology, Oberlin 

 College. 



ELIZABETH A. SMITH, Assistant Professor of Zoology, University of 

 Wisconsin. 



PHYSIOLOGY 



I. INVESTIGATION 



HAROLD C. BRADLEY, Professor of Physiological Chemistry, Uni- 

 versity of Wisconsin. 



