maize: pr-\cticums 277 



8. Shape (side view) : cuneate wedge-shape ; rounded-cuneate ; truncate-cuneate ; 



shoe-peg form ; rectangular; rounded comers. 



9. Summit: rostrate; mucronate ; rounded; flat; dented. 



10. When dented: dimple; long dimple; creased; pinrhed; Kgulate. 



11. Color: white; yellow; golden; red; purple. 



12. Place of color: endosperm; aleurone layer; hull. 



13. Character of endosperm: corneous; partly corneous ; farinaceous; glucose. 



14. Proportion of corneous endosperm, if dent variety: large; medium; smalL 



15. Size of embr^-o : large; medium; smalL 



16. Sketch of cross-section : show arrangement to scale of embr>'0, glossy and white 



endosperm. 



1 7. Sketch of transverse section : show arrangement to scale of embryo, glossy and 



white endosperm. 

 iS. Sketch of lateral section: show arrangement to scale of embryo, glossy and 

 white endosperm. 



373. The Characters of the Ear. — Give each student two or more ears 

 of each of the five t}-pes of maize, or five different \-arieties of the same t}-pe. Ten 

 ears of a given t}-pe or variety are none too many for a thorough study, but with 

 larger classes it may be necessary to economize in material. Ears properly labeled, 

 showing characters mentioned below, should be displayed for guidance of stu- 

 dents. (220) 

 Name of \'ariet>' .... Date .... 



1. Color of grain : white; yellow; golden; red; purple. 



2. Color of cob : white ; light red ; deep red. 



3. Surface : smooth ; medium ; rough ; very rough. 



4. Sulci: absent; apparent; narrow; distinct; very distinct. 



5. Pairs of rows : distichous ; not distichous. 



6. Number of rows : one-fourth length from butt . . . ; from tip . . . 



7. Direction of rows: rectilinear; spiral to right; spiral to left; irregular. 



8. Grains : very loose ; loose ; firm ; mosaic-like. 



9. Grains : upright ; sloping ; imbricated. 



10. Ear: cylindrical; cylindraceous ; slowly tapering; tapering; distinctly taper 



ing; flat. 



11. Butt: even; shallow rounded ; moderately rounded; deeply rounded. 



12. Butt: depressed; compressed; depressed-rounded; depressed-compressed' 



enlarged ; expanded ; open. 



13. Tip: sides of cob exposed ; end exposed ; end covered ; terminal grain. 



14. Juncture of ear stalk: large; medium ; small. 



15. Length of ear (extreme length) : (a) . . . (b) . . . 



16. Circumference of ear one-third distance from butt: (a) . . . (b) . . . 



17. Weight of ear: (a) . . . (b) . . . 

 :S. Weight of cob: (a) . . . (b) . 



xQ. Percentage of grain : (a) ... (b) ... 



20. Circumference of cob one-third distance from butt: (a) . . . (b) . . . 



21. Ratioof circumference of cob to circumference of ear: (a) . . . (b) . . 



