801 

 *Loesch, H. C. 1957. Studies of the ecology of two species of Donax 

 on Mustang Island, Texas. University of Texas, Publications of the 

 Institute of Marine Science 4(2) :201-226. 



The data presented in this paper are the results of an ecologi- 

 cal study of two species of Donax on Mustang Island, Texas, with 

 supplementary observations at Grand Isle, Louisiana. 



802 



*Theis, A. R. 1969. 

 Shore and Beach 



Beach erosion problems at Grand Isle, Louisiana, 

 37(1) :19-22. 



This article discusses how Grand Isle, a former outlet of the 

 Mississippi River through its Bayou Lafourche route, is now expe- 

 riencing beach erosion because its supply of material from the 

 river was halted by flood protection devices. 



Caminada 



East Timbalier Island 

 Timbalier Island 



Isles Dernieres 



172 



