3S 



CORN 



same plant and in different plants. The cell is filled with a living 

 material called [^roioplasjii. The greater part of protoplasm is cyto- 

 plasm, a colorless material of granular character. In addition to the 

 cytoplasm, the nucleus, or governing portion of the protoplasm, is 

 generally located in the center of the cell. Nucleoplasm forms the 

 major part of the nucleus, although the vital principle contained 

 therein is the chromatin. Cells multiply, that is, development takes 

 place at the growing point, by the process of cell division. A corre- 

 sponding segmentation of the nucleus takes place simultaneously, 

 whereby the new cell has all the essential cell elements. Cellulose, a 

 firmer material, constitutes the cell wall, which is usually very thin. 



NATURE OF ROOT GROWTH. Root growth takes place at a 

 point just back of the cap, known as the growing point. The tip, 

 which is pushed through the soil by the constant addition of cells at 

 the growing point is made up of harder cells and acts as a protection 

 to that portiiin. As it wear'- awa)'. new cells are supplied fn ini behind 

 by the growing point. 



TtfK FIBROUS ROOT SYSTEM OF CORN. 



M'l"\ "I ill,; r.llci iM.ss r.,nts VM-lr I(IM ill IrninMllj^ lllr phiiil liuiii iIh- Miil. 



N'i'lr liMw llie niiHs rxUiiil inilw^ird ami clow iu\ a rd. 



