In one respect, the maize from the refuse is the most 
interesting of all of the lots recovered because it contains 
cobs of a slender type not previously described in the 
archaeological record of South America. 
The lot comprises 115 cobs, of which fifty are rather 
thick, tapering at both ends. The diameter/length ratios 
of these vary from 0.25 to 0.82 in five typical cobs that 
were measured; the kernel-row number varied from 
fourteen to eighteen. These cobs appear to be related to 
the modern Chilean race Capio Chico Chileno. 
The slender cobs (see Plate XV, fig. B) are thirty-five 
in number. In five cobs measured, diameter/length ratios 
varied from 0.09 to 0.14, and kernel row numbers from 
twelve to sixteen. Both upper and lower glumes are her- 
baceous, quite different from the stiff, indurated glumes 
of Chutucuno Chico, and they probably represent a form 
of pod-corn. As mentioned earlier in this report, they 
appear to be related to the Chilean race Polulo, which 
in turn may be a descendant of the primitive popcorn 
race Confite Morocho. 
Four kernels were found in this collection. All are 
popcorn: three are yellow in color and one is brown. 
Discussion 
The cobs of these collections, the earliest as well as the 
more recent, appear to be related to three still living 
Chilean races: Capio Chico Chileno, Polulo, and Chutu- 
cuno Chico. These in turn are related respectively to 
three prehistoric Peruvian races: Confite Iqueno, the 
popcorn race Confite Morocho, and the popcorn race 
Confite Puntiagudo. The last-named race resembles in 
a number of characteristics the Mexican popcorn Polo- 
mero ‘Toluqueno, but the remaining two races have no 
close counterparts in Mexican maize, either prehistoric 
or modern. This fact is consistent with the suggestion 
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