202 Harshberger. — Maize : 



PLATE XVII. 



Map showing the original home of maize with its geographical dis- 

 tribution in space and time. The heavy contour lines represent elevation ; 

 one set shows an elevation of iooo feet, the other 4500 feet and over, as 

 indicated by the letters. The arrows show the direction of maize distri- 

 bution. Note that corn entered the United States from Mexico and the 

 West Indies. ■ 



The squared area on the map shows the position of the agricultural 

 tribes in North and South America. It is evident that the position of the 

 agricultural tribes and the area of maize distribution are identical. See 

 for discussion the Chapter on Ethnology. 



Legend in squares at the side : 



1. Original home of maize. 



2. Limits of primitive cultivation by the Mayas and allied tribes. 



3. Limits of distribution in North and South America prior to the 

 year 700 A.D. 



4. Limits reached in North and South America by the year 1000 A.D. 



