Juday—Some European Biological Stations. 1267 
ern marine planktology, still actively engaged in such work in 
spite of his advanced age, and Dr. Brandt who has made many 
valuable contributions to our knowledge of marine biology. 
The laboratory of the staff engaged in the International In¬ 
vestigations is situated in a residential portion of Kiel, some 
distance from the university. Dr. 0. Kriimmel is director of 
the laboratory and two other members of its staff are the well 
known planktologists, Dr. Apstein and Dr. Lohmann. 
The German government built a special ship, the Poseidon, 
for the Korth sea investigations. It is ewll adapted and splen- 
didly equipped for this work. Most of the material which is 
obtained during the regular cruises of the Poseidon, is brought 
to the Kiel laboratory for the subsequent chemical and biological 
studies that are made thereon. 
One of the most widely known fresh-water biological stations 
in Europe is the one located on the shore of Grossen Ploner See, 
in the quiet, picturesque town of Plon in Holstein. This sta¬ 
tion was founded in 1892 chiefly through the efforts of Dr. O. 
Zacharias, its present director. The brick building is two 
stories high, the second floor serving as a residence for the di¬ 
rector. On the first floor, there is a large, well lighted general 
laboratory on one side of the central hall which affords accom¬ 
modations for a number of students and investigators, and on 
the other side there is a small room for research work and a 
library. One room in the basement is supplied with aquaria 
and another is used for storing apparatus. 
The station is equipped with boats and an abundance of col¬ 
lecting apparatus, such as dredges and various types of plankton 
nets. The work is carried on during the entire year, the chief 
part being done, of course, in the summer. Courses are offered 
during the summer and these attract many students and investi¬ 
gators. Every student of limnobiology is familiar with the 
journal coming from this station, a volume of which has ap¬ 
peared each year since 1893. 
A biological and fish-culture station is located on Miiggelsee 
at Eriederikshagen near Berlin. A large, new three-story build¬ 
ing was completed and occupied early in 1908, so that the labor¬ 
atory now possesses much greater facilities for both biological 
