96 ALSTONIA SCHOLARIS. 



packed oval cells, with masses of enormous, bright yellow stone 

 cells, scattered thickly through the layer (fig. 3, e). They are so 

 numerous as to be seen with the naked eye, and they give the 

 mottled appearance to the outer part of this layer of the bark. 

 These stone cells (or sderenchyma) are much smaller toward the 



Fig. i.Alstonia Scholar is. (Jftentley and Triincu.} 



