Cor.tr. Nat. Herb., Vol. IX. 



Plate XI. 



Fig. 1.— Raphides, or Needle-like Crystals of Oxalate of 

 Lime in Leaf-blade of Taro Plant (Caladium colocasia). 

 Enlarged 100 Diameters. 



^^^^-m 





Fig. 2.— a Single Capsule Discharging its Needles. Enlarged 



200 Diameters. 



