THE EPIDERMAL SYSTEM. 



105 



the tooth to the water-cavity ; iu the tooth it becomes greatly enlarged, 

 and is there composed of spiral cells (trache'ides), which surround a 

 central mass of narrow elongated parenchymatous cells (Fig. 95, c, g). 

 The bundle terminates by the free ends of the parenchyma-cells extend- 



Fi<?. 95. Vertical section of a leaf-tooth of Fuchsia globosa. a. vertical longitudi- 

 nal section of water-pore ; 6, water-cavity ; c, tracheldes ; d, chlorophyll-bearing 

 parenchyma : e, large cell containing raphides ; /, hair ; g. parenchyma of the flhro- 

 vascnlar bundle. The lower part of the figure passes into the leaf-blade, x 125 

 After Arthur. 



ing loosely into the water-cavity. Between the bundle and the epider- 

 mis of the leaf-tooth lie two or three cell layers of ordinary chlorophyll- 

 bearing parenchyma, in which there are occasionally large cells con- 

 taining raphides (Fig. 94, cp and ra)* 



* The foregoing account of the water-pores of Fuclwia globosa, and 

 the drawings for Figs. 93-4-5, sire taken from an unpublished papwr 

 on " The Water-Pores of Fuchsia globow," by J. C. Arthur. 



