Bui. 183, U. S. Dept. of Agriculture. 



Plate V. 



^pi»« * crisr^r*-' 





Fig. 1.— Photomicrograph of the Scutellum of a Germi- 

 nating Grain with Its Epithelial Layer. 



In the ends of the cells of the epithelial layer (c) is to be seen the 

 black deposit, thought by Torrey to be diastase. In front of the 

 epithelial laj-er the endosperm has been reduced to a milky 

 solution, while the scutellar cells back of it are obviously highly 

 vital. 



Fig. 2.— Two Grains of Finnish Barley. 



A grain u( uiidesirubli; spitidlo .shapu anil a Kiiiall, iii.sulliciuiil 

 Hculollum. 



