142 Osmotic Properties of Salt Marsh Plants. 
3. On transferring isolated seedlings from relatively strong 
saline solution to fresh water, the tips of the root-hairs may swell 
out and assume curious shapes (Fig. 23). 
Fig. 23. 
4. Occasionally, branched root-hairs may be seen (Fig. 24). 
Fig. 24. 
5. The cellulose-wall of the tip of the root-hair may be 
thickened (Fig. 22), which may possibly be of value in giving the end 
a greater strength in order that a sudden increase in the internal 
pressure, due to a sudden diminution in the osmotic pressure of the 
soil-water, may be withstood. 
6. The amount of sodium chloride in the seedling seemingly 
increases from the root upwards. The salt is most abundant in 
the higher region of the hypocotyl, and in the fleshy cotyledons. 
