42 HALF AN HOUR WITH SEAWEEDS. 



covered with a hoar-frost-like substance, which is 

 sweet, and resembles the " mannite " sold in chemists' 

 shops, hence the name of the species. The stems of 

 the two latter are tough, and become hard when 

 dried, so that it is not uncommon to see portions 



Fig. 11. 



flalidrys siliquosa, nat. size. 



turned into fork handles, the prong of the fork 

 being inserted when the portion was soft, and 

 recently cut off. 



On various parts of the rocks, during your rambles, 

 you may have observed a little, bushy-tufted, olive- 

 coloured seaweed, called Halidrys siliquosa (Fig. 11). 



