PRODUCTION AND COLLECTION OF SEED OYSTERS 
261 
and analysis of the daily temperature records. A full description of this method 
and its application can be found in the paper of Prytherch (1929). 
The experiments with the shell bags carried out in several localities described 
in this paper show clearly that this method of seed collection can be successfully 
applied on a commercial scale in the inshore areas of North Atlantic States. 
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