THE TRUE FISHES. 





allows it to swallow a fish, in some instaD ix tin. own bulk. 



makes one think of the bag which ' Jack the .giant-killer ' wore doin^ 

 famous gastronomic duel with the giant. 



Except for baiting fish-nets and lobster-traps, the sculpin 

 as useless as they are ugly. They have an enormous head, small bod . 

 large pectoral fins. One remarkable peculiarity about them i> their h 



P 



<7 -*^~ 



FlG . 319. — Walking-fish (Periophthalmus). 



of swallowing air as soon as they are drawn from the water In tb 

 they will Ju up like a balloon, and then, when thrown K-p. 



helplessly abont on the snrfaee. utterly unable for a tone ... i »■' 



bottom where they ordinarily dwell. 



The European weaver-fishes can cut and sting 

 of their fin S id o-ill-cover,, but in the tropical- 



