• • • C. D. Clausen· A. A. Roth Estimation of Coral Growth-Rates from Laboratory 45Ca -lncorporation Rates 85 C. D. Clausen· A. A. Roth Effe ct of Temperature and Temperature Adaptation on Calcificati on Rate in the Hermatypic Coral Poc i l/opora damicornis 93 P. Dust an Growth an d Form in the Reef-Building Coral Montastrea annularis 101 • N. Gundermann . D. Popper Some Aspects of Re colon ization of Coral Rocks in Ei lat ( Gulf of Aqaba) by Fi sh Populations after Po isoning 109 R. A. Kenner· S. I. Ahmed Measurements of Electron Transport Activities in Marine Phytoplankton 119 R. A. Kenner · S. I. Ahmed • Correlation between Oxygen Utilization and El ectron Transport Activity in Marine Phytoplankton 129 F. J .- P. Briand Effects of Power-Plant Cooling Systems on Marine Phytoplankton 135 R. R. Stickney· S. C. Knowles Summer Zo op lankton Distribution in a Georgia Estuary 147 D. J. Crisp· C. A. Richardson Tidally-Produced Internal Bands in the Shell of Elm inius modestus 155 G. Walker· P. S. Rainbow · P. Foster· D. L. Holland Zinc Phosphate Granules in Tissue Surrounding the Midgut of the Barnacle Balanus balanoides 161 P. Prim· J. M. Lawrence Utilization of Marine Plants and Th eir Constituents by Bacteria Isolated from the Gut of Echinoids (Echinodermata) 167 R. T. Wright· N. M. Shah The Tr ophic Role of Glyco li c Acid in Coastal Seawater. I. Heterotrophic Metabolism in Seawater and Bacterial Cultures 175 Indexed in Current Contents