go FUNDAMENTALS OF AGRICULTURE. 



TYPES OF COBS. 



_ At left, ear has too large cob and kernels are too shallow; at right, well-formed ear 

 with medium size cob, kernels are deep and wedge-shape; at top, kernels not of shape 

 to fill well space between grain rows; at bottom, cob too small and kernels too shallow 

 and round. 



ditions turn inside out, probably through the explo- 

 sion of the moisture retained in the kernels. The 

 ears, kernels, and plants are usually of small size, and 

 are cultivated in the United States for popping pur- 

 poses only, but in some countries, as Austria, these 

 corns are grown for the main crop for animal food 

 as well as for human use. The plants and seeds are 

 hardy, being resistant to unfavorable conditions such 

 as dry weather and low temperatures. 



6. Zea Tunicata. The Pod Corns. The kernels 

 of this species-group are enclosed in pods or husks, 

 and the ears as a whole are frequently enclosed in gen- 

 eral husks as is the case with the ears of the other 

 species-groups. In the extensive cultivation of dent 

 and sweet corns, ears of pod corn frequently or oc- 

 casionally appear, which come fairly true to seed when 



