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PEARLS AND PEARLING 



OUTLINE SHAPE OP A "CROW FOOT" DREDGE. 

 Courtesy of If. Willard Son & Co. 



or left. If it is desirable to move the boat to the right, 

 the guide rope on the right side is tightened, which also 

 loosens the left rope. If it is desirable to move the boat 

 farther to the left, the left guide rope is tightened and 

 the right guide rope is loosened, 'if it is desirable to go 

 straight ahead the guide ropes should be made equal. 



Another very serviceable mule is made similar to the 

 one illustrated except that no frame is used. The cloth 

 is attached to a wooden strip above and an iron bar be- 

 low. It is used in the same manner as the other mule. 

 The large hauling rope which is used to drag and lift the 

 dredges should be a strong one. A five-eighths inch 

 new hemp rope is strong enough, but is so small that it 

 cuts the hands. A new one or one and one-quarter inch 



