708 Wisconsin Academy of Sciences, Arts, and Letters. 
EXPLANATION OF PLATE XL. 
Fig. 42. 
Fig. 43. 
Figs. 44-50. 
Figs. 51, 52. 
A. Grain mounted in water. 
B. Same grain stained with dilute iodine water. 
C. Same grain stained with gentian violet and orange G. 
Grain showing appearance of layers when mounted suc¬ 
cessively in water, iodine water, alcohol and Flem¬ 
ming’s triple stain. 
Canna grain showing successive stages in the action of 
10% potassium hydroxide. 
Grain showing surface and edge views. 
