IOO W. C. ALLEE. 



zoology might be considered in this one course, which was de- 

 signed particularly to meet the need of teachers. In 1893 tne 

 work in embryology was taken over in a separate course under the 

 direction of Professor C. O. Whitman, in 1899 Professor Jacques 

 Loeb first offered a special course in comparative physiology, and 

 in 1919 Professor Gary N. Calkins organized the course in pro- 

 tozoology ; but elementary aspects of these special courses are 

 still retained in the invertebrate course, wherever they are found 

 useful in the study of the subject. 



The present type of organization has been in existence since its 

 initiation twenty years ago, in 1901, by Dr. Drew. The conduct 

 of the course as described then by Caswell Grave 1 has seen no 

 radical change, although there has been a gradual evolution away 

 from histological studies towards observations on living animals, 

 in keeping with the zoological tendencies of the times. 



The instructor in charge of the course bears full responsibility 

 for the selection of the staff, except that the number of staff mem- 

 bers is fixed by the laboratory management ; there are at present 

 eight instructors and an assistant who acts as preparator and sees 

 to the supply table. The staff is selected from younger instruc- 

 tors or exceptional graduate students and is chosen for teaching 

 as well as research ability, not to mention the physical strength 

 and energy necessary for a long day's teaching and strenuous 

 field trips. An effort is always made to bring these instructors 

 from universities and colleges in different parts of the country in 

 order to have the various types of training represented. The 

 unusual teaching experience is the principal payment for the in- 

 structor's labors, although the stipend he receives, together with 

 the accompanying research facilities, is frequently the factor that 

 makes his presence at the laboratory possible. 



The work of the staff is divided in open staff meeting with the 

 instructor in charge as chairman, and the general conduct of the 

 course is there discussed and planned. Each member chooses or 

 is assigned some group or groups o<f animals with which he is 

 especially familiar, or in which he is particularly interested and 

 wishes to work up in the necessary detail. Not only does he 



1 " Course of Study in Invertebrate Zoology in the Marine Biological Labo- 

 ratory at Woods Hole," fourn. App. Microscopy, 10, 1482-6. 



