Bul. 183, U. S. Dept. of Agriculture. PLATE III. 
PHOTOMICROGRAPH OF A LONGITUDINAL SECTION OF A PORTION OF A BARLEY GRAIN 
IN THE EMBRYONIC STATE. 
a, Inner area of the endosperm, with starch grains; b, outer and younger area just forming, with few 
state grains and large nuclei; c. aleurone layer; d, integuments and pericarp; g, fragments of 
glumes. 
