106 



NATURAL HISTORY OF OUR SHORES 



seen washed up on every shore where the waves have 

 brought things from their home in deeper water. 



On looking closely at the surface of one of these " Sea- 

 mats "it will be noticed that it is a network of little cells 



Fig. 41. Jfembrauipora membra, nacea. Coating 

 fucus. Very slightly enlarged 



(not cells in the biological sense, which we have roughly 

 studied, but in the sense of little dwelling places). 



Each of these little cells is the home of one individual. 



On the surface of rocks, where these are submerged, on 

 the under side of stones in pools, coating the stems of sea- 



