- 80 - ROOT ABSORPTION. 



4. Root-hairs. 



(a) Koot-hairs seen with the naked eye. 



(6) A root-hair highly magnified. Note that it is just an elongated living cell. 



5. Osmosis. Egg-membranes containing a sugar solution immersed (1) in distilled 

 water, (2) in a sugar solution of the same concentration as that inside the membrane, 

 and (3) in a sugar solution more concentrated than that inside the membrane. 



6. Osmosis. Dried raisins placed (1) in distilled water, and (2) in a sugar solution. 



