INDIVIDUAL EXERCISES FOR SUMMER TERM — 325 
Optional Study 15. A Corn Record 
Corn is King! 
This beautiful plant, that our forefathers, when they first 
came to America, found growing in little patches about the 
camps of the red men, has become our great staple. The 
following study of its natural history may be made in any 
convenient cornfield. It calls for careful observations at 
least once a week (oftener in flowering time) on germination, 
leaf-unfolding, stooling, prop-root formation, tasseling, 
“shooting’’ of ears, responses to drouth, or to wind, ripening, 
etc.; in short, on all phases of the behavior of the plant. 
The record may be in the form of a diary with weekly (or 
more frequent) entries covering: 
temperature, rainfall, windstorms, 
and other relevant weather condi- 
z. Physical factors] tions. 
of environment |condition of soil as to tilth, weeds, 
etc. 
tillage. 
average height at each date of record. 
2. Growth details of its development and be- 
havior. 
birds, animals, insects, fungi, etc., 
$  -Emencs { found causing injury. 
