THE MARINE BIOLOGICAL LABORATORY. 285 



VI. THE DIRECTOR'S REPORT. 



To THE TRUSTEES OF THE MARINE BIOLOGICAL LABORATORY. 



Gentlemen: I beg to present herewith a report of the thirty- 

 fourth session of the Marine Biological Laboratory for the year 

 1921. 



The session was in every sense a successful one; the attendance, 

 which was far in excess of any previous year in the number of 

 investigators, confirms again the status of the Laboratory as an 

 effective organization for the promotion of biological research. 

 The student attendance was the same as the preceding year, 120 in 

 all courses, a number which has been fixed as a maximum with 

 our present accommodations. The increase of the fee for courses 

 from $50.00 to $75.00 first put into effect in 1921 thus did not 

 operate to reduce attendance. 



One hundred and seventy-two investigators, 36 more than in any 

 preceding year, worked at the Laboratory. This was rendered 

 possible by the completion of nine additional rooms in the brick 

 building, with aid from the Nela Research Laboratory and Eli 

 Lilly and Company acknowledged in the preceding report, by the 

 use of five additional rooms in the newly completed laboratory of 

 the Supply Department, and by assignments to the Laboratory of 

 the Bureau of Fisheries at Wood's Hole generously placed at our 

 disposal by the Commissioner, Dr. Hugh M. Smith. It would 

 have been impossible to accommodate so many workers in the 

 regular laboratories. 



Fifty-two universities and colleges and research institutions 

 subscribed for research rooms, or investigators' or students' tables 

 (see appended list). This was the same number as in 1920, but 

 the amount subscribed increased from $6,210.00 in 1920 to $b,- 

 800.00 in 1921. The total number of institutions represented oy 

 workers at the Laboratory was 95 scattered throughout practically 

 all of the Eastern and Middle Western States. Workers from 

 England, Holland, Russia, China, and Japan represented a growing 

 international interest in the Laboratory. 



Medical interests were represented by forty-one investigators 

 and five students from twentv-seven medical institutions of this 



