CHAP. VI. ] DEEP-SEA DREDGING. 251 
becoming entangled or wedged among rocks or 
stones, a strain less than sufficient fs break the 
dredge rope would break the stop, alter the position 
of the dredge, and probably enable it to free itself ; 
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Fic. 48.—Dredge-frame showing the mode of attachment of the Bag. a Spunyarn Stop. 
and in case of its taking in a greater load of mud 
than the rope could bring up, the stop would like- 
wise give way and allow the dredge to fall into such 
a position that a large part of its contents would slip 
