PROGRESS IN BIOLOGICAL INQUIRIES, 1929 1121 



deficiency by importing fresh-wiitcr miissol shells is being made. 

 A small number of tons of Chinese shells have been imported. Mexi- 

 can resources are being looked into. Two companies are sending 

 representatives to South America. Canada has mussels of com- 

 mercial value but so far permits only the most limited and restricted 

 shelling for domestic use only. Siamese shell resources are being 

 examined b,y Dr. H. M. Smith, adviser in fisheries to the Siamese 

 Government. 



The most cordial cooperation in the bureau's mussel work has been 

 extended by the various State departments. All are ready to assist 

 to the utmost when the bureau's new mussel culture system is defi- 

 nitely started on large-scale production. This assistance will be both 

 the closing of more mussel territory to protect the planting of young 

 mussels and the furnishing of stock mussels for the actual propaga- 

 tion work. 



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