The Mighty Deep 



they are minute microscopic beings, far too 

 small individually to be seen by us, yet apparent 

 in the mass by their united brilliance. 



If millions of their glowing lamps shine in 

 ocean's deeper parts, we need no longer marvel 

 to find deep-sea animals with large and well- 

 developed eyes. 



While on this subject, it should be added that 

 the Medusae have not a monopoly of ocean- 

 lamps. Other creatures share in the task of 

 lighting up those midnight depths. 



Not long since two new species of fishes 

 were discovered off the Azores, both of which 

 possessed delicate organs of light-giving power. 

 In one of them the rows of tiny lamps could 

 be used or hidden "at will" allowed to shine 

 upon the world around, or shut off by a thick 

 dark skin, somewhat after the fashion of a 

 policeman's "dark lantern." Cuttle-fishes too 

 have been found carrying natural lamps for sub- 

 ocean use. 



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