38 



THE NATIONAL GEOGRAPHIC MAGAZINE 



NATIVES SPEARING FISH IN THE SOUTH SKA ATOLLS 



Photographs by Ralph Stock 



PEARL BLISTERS ARTIFICIALLY PRODUCED BY "mil MUMPUS," Ol' THE SOUTH SEAS 



( SEE TEXT, PAGE 43,) 



The- pearl is a disease of the oyster: introduce the disease and you will get a pearl, 

 according to this authority, who hopes some day to be able to produce whole pearls as readily 

 as he now produces half-pearls. 



