The great progress made in recent years in the field of the chemical and physical properties of water and the dependence of the life processes on these makes it appear desirable to take water as an environment as the central theme. This book has grown out of the course in Hydrobiology given at the Biological Station at Lunz.
FRANZ RUTTNER is the Director of the Lunz Biological Station at the Austrian Academy of Science.FreyD.G.:
D. G. FREY is a member of Indiana University.FryF.E.J.:
F. E. J. FRY is a member of the University of Toronto.