LEADS. 45 



hooks are fixed are fastened round one end, 

 While the other end of each piece of whalebone 

 is fixed on a piece of lead about one pound 

 weight. It need not, however, be attached to 

 this, but care must be taken that the whale* 

 bone forms two separate angles (fig* 3)* 



Fig. 4. 



There is another kind of tackle, which only 

 differs from the other by having a third piece of 

 whalebone passing from one to the other of the 

 angles, keeping the pieces firmly fixed (fig. 4); 

 this, however* our experience has proved to 

 Us, is not so effective in its action as the more 

 simple one already described. 



The hooks are represented in the annexed 

 engraving. 



