A 



Fig. 18. A, parenchymatous cell, highly magnified: at the exterior 

 is the cell-wall (shaded) which encysts the body : the latter is 

 composed of a protoplasmic lining which surrounds the large 

 watery vacuole, while in the centre the nucleus is suspended by 

 bridles of protoplasm. The arrows indicate the movements of 

 the protoplasm during life. B shows a portion of the cell-wall 

 and protoplasmic lining more highly magnified. (From Vines' 

 Lectures on Physiology of Plants, after Hanstein.) 



