PLATE 1 



A, B. Two views of reef oft Loggerhead Lighthouse, as seen al extreme low tide on June 6, 1910. Heads above water are 

 OrhUella annularis. The alcyonarian R/iifidoeorgia fiabtllum and Pltxaura sp. are also shown. 



C, D. Two views of storm-proof live-car in which tiles bearing attached planulx were planted. C. Before launching, 

 showing how tiles are fastened. D. After launching, showing its appearance in water. 



