ABSORPTION OF WATER 
53 
FlG. 40. Diagram 
showing relation of root- 
hairs to adjacent cells of 
the root, h, the oldest 
of the four hairs shown, 
and furthest from the 
root-tip. 
FIG. 41, Root-hairs from the root of a mus- 
tard seedling, a, In state of turgor; b, be- 
ginning of plasmolysis after immersion in weak 
salt-solution; c, later stage of plasmolysis; n, 
nucleus. 
FIG. 42. Root-hairs, with soil-particles adhering. (After Sachs.) 
