39 



X 



'■ '■•■../fk'V'W.I,-'.' ' 



A 







y 



Fiu. 12.— Teosinte (Euchl(rna hiTvrimu) : a. one of the 'oars' inclose«i by the "husk"; 6, the 

 same with a portion of the husk n'uiov tMl. slunviuu' the grains; c and d, views of the grain. 



