basis of a half-mile wide strip off the 

 beach the dusting cost about $1,000 per 

 mile. 



4. The spraying of such a restricted 

 area cannot insure that the beaches may not 

 receive the bodies of dead fish killed 

 elsewhere and drifted in by tides and in- 

 shore winds. 



5. The chief benefit from this type 

 of restricted spraying is the temporary 

 relief from the choking and coughing caused 

 by the airborne toxin of G. breve . This is 

 especially bad on the beaches where it is 

 apparently thrown into the air by the break- 

 ing surf. 



CONCLUSION 



In conclusion, we cannot recommend the 

 dusting of copper sulfate as a control for 

 a red tide outbreak of serious proportions. 

 Until some cheaper and more effective means 

 of control is discovered, it may serve in 

 local situations to give immediate temporary 

 relief from the airborne toxin. 



GALTSOFF, PAUL S. 



1948. Red tide. U. S. Fish and Wild- 

 life Service, Special Scientific 

 Report :46:l-44. 



1949. The mystery of the red tide. 

 Scientific Monthly 68(2) : 108-117. 



GRAHAM, HERBERT W., JOHN M. AMISON, 

 AND KENNETH T. MARVIN 

 1954. Phosphorus content of waters 



along the west coast of Florida. 

 U. S. Fish and Wildlife Service, 

 Special Scientific Report :Fish- 

 eries No. 122, 43 pp. 



GUNTER, GORDON, R. H. WILLIAMS, C. C. DAVIS, 

 AND F. G. WALTON SMITH 

 1947. Catastrophic mass mortality of 

 marine animals and coincident 

 phytoplankton blooms on the west 

 coast of Florida, November 1946 

 to August 1947. Ecol. Monogr., 

 18(l):309-324. 



INGLE, ROBERT M. 



1954. Irritant gases associated with 

 red tide. Spec. Serv. Bull. 

 No. 9, 1-4 pp. (mimeographed) 



REFERENCE MATERIALS 



CHEW, FRANK 



1953. Results of hydrographic and 



chemical investigations in the 

 region of the "Red Tide" bloom 

 on the west coast of Florida in 

 November, 1952. Bull. Mar. Sci., 

 Gulf and Caribbean 2(4) :610-625 . 



FEINSTEIN, ANITA, A. RUSSEL CEURVELS , 



ROBERT F. HUTTON, AND EDWARD SNOEK 

 1955. Red tide outbreaks off the Florida 

 west coast. Mar. Lab., Univ. of 

 Miami. Rept . 55-15 to the Florida 

 State Board of Conservation: 1-44. 

 (mimeographed) 



MARVIN, KENNETH T. 



1955. Oceanographic observations in 



west coast Florida waters, 1949- 

 52. U. S. Fish and Wildlife 

 Service, Special Scientific 

 Report -.Fisheries No. 149, 32 pp. 



RAY, SAMMY M. , AND WILLIAM B. WILSON 



1957. Effects of unialgal and bacteria- 

 free cultures of Gymnodinium 

 brevis on fish. U. S. Fish and 

 Wildlife Service, Fishery Bulle- 

 tin No. 123, vol. 57, 469-496 pp. 



WOODCOCK, ALFRED H. 



1948. Note concerning human respiratory 

 irritation associated with high 

 concentrations of plankton and 

 mjiss mortality of marine organ- 

 isms. Jour. Mar. Res. 7(1) :56- 

 62. 



