No. 378.] BIOLOGICAL STATIONS IN. AMERICA. 405 
The investigation of the Oligochzeta has been carried on for 
several years; thirty species are known to occur. Two new 
genera and at least seven new species have been found. Three 
papers have appeared upon the subject, and a final report is in 
preparation by Professor Smith. The results of the examina- 
tion of the Turbellaria of the station have been published by 
Dr. W. McWoodworth, seven species being found, of which two 
are new. Some new species of Rotifera and Protozoa have been 
described by Mr. A. Hempel, and a report upon the local and 
seasonal distribution of these groups has been completed. 
Three papers upon the Entomostraca, prepared as zodlogical 
theses by students in the university, have been based in part 
upon station collections. A report upon the Ostracoda of North 
America, by R. W. Sharpe, a revision of the North American 
species of the genus Diaptomus, by F. W. Schacht, and a paper 
upon the North American species of Cyclopide, by E. B. Forbes, 
have appeared, and a fourth paper upon the remaining genera 
of the Centropagide is ready for the press. 
The plankton work of the station has resulted in the accumu- 
lation of a large number of collections and a mass of data upon 
the local and seasonal distribution of pelagic organisms. Con- 
siderable attention has been given to the sources of error in the 
plankton method, and efforts have been made to secure a 
reliable and convenient basis for the quantitative and statistical 
study of the aquatic world. 
Although the station was established primarily for purposes 
of investigation, its relation to biological education has not been 
neglected. As soon as permanent quarters were occupied, the 
facilities of the station were thrown open to students and 
teachers, twenty of whom availed themselves of the privilege 
in 1896. No formal instruction was given, each person follow- 
ing his own inclination as to the line of work undertaken, with 
such incidental guidance and assistance as the station staff 
could afford. A summer school with definite courses, especially 
for teachers, was planned for 1897, but, owing to the temporary 
loss of funds for the maintenance of the station, the project 
_ Was abandoned. For the summer of 1898 an offer is made 
of elementary and advanced courses in both botany and zodlogy. 
