Popular Science Monthly 



197 



sharks to locate it. They approached 

 cautiously at first and then attacked it, 

 striking it with the force of a ram and 

 tearing off huge pieces of flesh. Attached 

 to the body of each shark, as the pictures 

 show, were the usual pilot fish, clinging 

 with the aid of sucker fins. As soon as a 

 shark is dead the pilot fish attack it, 

 eating their way through the dead body. 

 One shark, Mr. Williamson observed, struck 

 a projecting beam and was dazed mo- 

 mentarily. The instant the other sharks 

 saw this they fell upon the unfortunate 

 one and literally tore it to shreds. 



Ordinarily, sharks are easily caught with 

 bait and hook, and frequently they become 

 enmeshed in fishing nets. But no one 

 has ever devised a scheme whereby they 



can be caught and killed in large numbers. 

 One ingenious method is here illustrated. 

 On each side of a small patroling vessel 

 are mounted a number of rotary reels 

 each of which carries an insulated electric 

 cable. To the free end of each cable is 

 secured a large fish hook carrying the bait 

 in the form of a fish or piece of meat 

 which is let down over the side of the 

 ship almost to the water's level. 



The reel drum has on one of its heads 

 a number of contact pins which are con- 

 nected with the insulated cable. As soon 

 as the reel is turned slightly, one of these 

 pins comes in contact with a stationary 

 bracket connected with one pole of a 

 dynamo supplying a current of 220 volts 

 and five amperes, the other pole being con- 



One of the scenes 

 photographed un- 

 der-sea by the Wil- 

 liamson Brothers 

 for their thrilling 

 film production, 

 "The Submarine 

 Eye." In this pic- 

 ture Mr. William- 

 son proves that a 

 shark does not turn 

 on its back to at- 

 tack an enemy as is 

 commonly supposed 



Sharks are easily caught with 

 bait and hook. Here is shown 

 the type of giant hooks used 



Notice the small pilot fish underneath the shark at 

 the bottom of the picture. It clings to the shark 

 by sucker fins and feeds on the body eventually 



