LITERATURE CITED Dammann, A. E. 1969. Study of the fisheries potential of the Virgin Islands. Contrib. #1, Virgin Islands Ecological Research Station, College of the Virgin Islands. Donnelly, T. 01. and J. Whetten 1968. Field guides to the geology of St. Thomas, St. John and St. Croix, Virgin Islands, Fifth Caribbean Geol. Conference. Grigg, D. I., R. P. vanEepoel and R. W. Brody 1970. Water quality and marine environment of Vessup Bay, St. Thomas. Water Pollution Report No. 8, Caribbean Research Institute. Holmes, R. W. 1970. The Secchi disk in turbid coastal waters. Limnol. and Oceanogr. 15(5):688-694. McNulty, J. K., W. B. Robertson and B. F. Horton 1968. Departmental study team report and recommendations on proposed now jet airport, St. Thomas, Virgin Islands, U. S. Dept. of Interior. Michel, J. F. and D. C. Tabb 1968. A study of the biolo- gical and coastal engineering aspects of the pro- posed jet airstrip at Jersey Bay, St. Thomas, II. S. Virgin Islands; Part II, Coastal engineering considerations, Institute of Marine Sci., University of 'aTi.a. Page 39