FLOURS. 



35 



PLATE XIV. 



Fig. 24. Rice Flour. 



a, Starch, very small simple grains. 

 a', Compound starch grains. 

 al, Aleurone. 

 ap, Aleurone layer. 

 Ct, Transverse cells. 

 e, Outer epidermis of pericarp. 



ga, Masses of starch, composed sometimes of simple grains, sometimes of 

 simple and compound grains. 

 t, Tubular cells, very delicate and numerous and close together. 



D2 



