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Association of Systematic Botanists 
and Plant Geographers, the German 
Teachers' Union for Natural History, 
the West Prussian Botanic and Zoo- 
logical Society, the Natural History 
Society at Geestemiinde on the Weser, 
and the Berlin Society for Promoting 
Knowledge of the Homeland. 
Several societies have made grants 
of money for purchasing natural monu- 
ments. The Travellers' Association 
at Elbing bought some land near the 
coast with beeches growing on it, close 
to the eastern geographical limit of that 
tree, for preserving it in its natural 
state. The Anthropological and Ar- 
chaeological Society at Guben saved 
a big boulder in the same way. The 
Aller Association at Neuhaldensleben 
farmed some fenland for many years, 
as it was not saleable. Thus a charac- 
teristic plant association was preserved 
which contains the following mem- 
C. lO 
