66 



SHARP EYES 



have also heard the plant called 

 calls Caliban in The Tempest : 



pignut," which re- 



"And I with my long nails will dig thee pignuts." 



But the " pignut " of Shakespeare is the secret of an- 

 other plant which grows in foreign soil. Nevertheless, 

 not until we follow the example of Caliban and " dig " 

 can we really claim acquaintance with our little dwarf- 

 ginseng, whose sweet edible tuber deep under the 

 mould, is known only to the few. 



