EXPLANATION OF THE PLATE 
Fic. A. Three of the larger cobs from lot 100, dated at ca. A.D. 
100. These are quite similar in the average dimensions to the pre- 
historic Peruvian race Confite Iqueno, and are related to the modern 
Chilean race Capio Chico Chileno. (Actual size. ) 
Fic. B. Three of the more slender cobs from lot 337-1, dated at 
ca. A.D. 1250. These are related to the modern Chilean race Polu- 
lo, which may in turn be related to the Peruvian popcorn Confite 
Morocho. (Actual size. ) 
Fic. C. Two cobs from lot 290, dating to the late prehispanic period. 
These are prehistoric counterparts of the modern Chilean race Chutu- 
cuno Chico, which may be related to the Peruvian race Confite Puntia- 
gudo. Note the stiff, curved lower glumes, a characteristic which may 
have been derived from one of corn’s relatives, teosinte or 7'ripsacum. 
(Actual size. ) 
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