Smithsonian Report, 1906. — Derby. 



Plate I. 



Lenqoes, Built on Diamond-bearing Ground. 



A Native Naked Diver Preparing to go Down, SubFE.\DED from the Rope is a 

 Tube Conveying Air to a Man in Diving Suit already on Bottom. 



^From pliotogriiphs by H. W. Furniss.) 



