PEAS AND BEANS. 253 



cells are usually smaller, about one-half the size of those 

 of the pea, and the side walls are more markedly thick- 

 ened. The parenchyma in the centre of the seed of the 

 bean is made up of isodiametric cells whose walls are 

 distinctly thicker than are the walls of the parenchyma 

 of the pea. The starch grains are more distinctly oval 

 and much larger, 50 microns representing the longer 

 diameter of the larger grains. The hilum is distinctly 

 elongated and lacerate. 



The table from Vogl* on page 250 shows the con- 

 trasts more definitely. 



