THE CELL AND PROTOPLASM. 



81 



referring to the accompanying figures. Figs 10- 

 14, for instance, show the microscopic appearance 

 of several plant tissues. At Fig. 10 will be seen 



FIG. 10. Cells at a root tip. 



the tip of a root, plainly made of cells quite 

 similar to the typical cell described. At Fig. 11 

 will be seen a bit of a leaf showing the same 

 general struc- 

 ture. At Fig. 12 

 is a bit of plant 

 tissue of which 

 the cell walls are 

 very thick, so 

 that a very dense 

 structure is 

 formed. At Fig. 

 13 is a bit of a 

 potato showing 

 its cells filled 

 with small gran- 

 ules of starch 

 which the cells 



VIQVA -nrnrlnpprl FIG. 11. Section of a leaf showing 



nave prOClUCea ceils of different shapes. 



by their activi- 

 ties and deposited within their own bodies. At 

 Fig. 14 are several wood cells showing cell walls 



