Photograph by O. F. Cook 



THE HARDIEST POTATO 



A variety of potato grown at the upper limit of cultivation, on the high slopes near the 

 Pass of ha. Raya, at an elevation of over 14,000 feet. • The neighboring vines had their leaves 

 killed by the frost, but this plant was entirely uninjured. Both the rootstocks and the tubers 

 are bluish purple. The variety called Tutu is said not to be edible in the fresh state, and to 

 be used only for the making of chunos by freezing and drying (natural size). 



