50 



Single oysters attached to small clam shell which makes a perfect collector 

 (reduced one-third). 



From Bull. No. 3, Gulf Biol. Station, after J. L. Kellogg. 



When the clutch is planted with the intention of securing 

 seed which is to be transplanted to some other bed to mature, 

 it is frequently desirable to use some form of chiteh which will 

 either break up easily or from which the young oysters may be 

 separated without any danger of their being injured during the 

 process. In some places the bottom is so soft that it cannot be 

 hardened by the application of any of the usual methods, but 

 where the conditions are such that a good set of spat would 

 be secured if there was any material present to which the spat 

 might become attached. In such eases many different forms 

 of clutch have been used with varying success. 



