CHAP. VI.] 



DEEP-SEA DREDGING. 



251 



becoming entangled or wedged among rocks or 

 stones, a strain less than sufficient to break the 

 dredge rope would break the stop, alter the position 

 of the dredge, and probably enable it to free itself ; 



PW\WI! 'f mi 





FIG. 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 



