Photograph by O. F. Cook 

 IN ADDITION TO THE POTATO, PERU HAS ORIGINATED MANY VALUABLE ROOTS (SEE 



PAGES 5 13-5 1 5) 

 These are not specimens of hand-decorated Japanese art but were stnped by nature 

 before the tubers were dug. Why the subterranean par to a 1 p ^^^^^bSeve that 

 purple stripes is hard to imagine, but the case may be ^ e ^.^''l° Se a J Qllantavtambo. 

 colors must be useful. Two varieties are shown, both ^^fft^S fewer, 

 The varietv at the right, with the larger and more irregular tubers, al.o has tlie stripe 

 shorter, and of a deeper purple color (natural size). 



; 2 6 



