A PEEP AT THE INSIDE. 



71 



in Fig. 60. Odd forms of cells are shown 

 in the hairs upon the leaves and stems of 



Fig. 60. 



plants. Hairs of the pumpkin vine, each 

 hair composed of several cells, are shown in 

 Fig. 61, and one-celled 

 hairs of another plant 

 are showTi in Fig. 62. 

 The external cells of 

 plants are usually flat- 

 tened and often hor- 

 de r e d by irregular 

 margins. These flat- 



Fig. 61. 



Fig 62. 



tened or tabular cells make the epidermis. 

 The outlines of the thin epidermal cells of 

 the leaf of the snap-dragon are figured in 



