2o6 



POPULAR SCIENCE MONTHLY. 



ing out of the same structural type under slightly different adaptational 

 conditions. 



In the sheltered pot-holes where the motion of the water en masse 

 \> not possible and where the total movement is comparatively less vio- 

 lent, one finds an altogether different flora and fauna from that in evi- 

 dence on exposed reefs. Figure 14, showing the edge of a tide-pool and 

 penetrating below the surface of the clear liquid that fills it, presents a 

 view of two genera of Corallinaceae — Amphiroa on the right and to- 

 wards the center, and Corallina on the left. Below, suffering from slight 

 refraction, may be identified the frond of Codium mucronatum cali- 



FiG. 18. Trunk of a West Coast Cedar showing the Abundant Epiphytic Vegetation 



AND indicating THE CHARACTERISTIC LOMARIA FORMATION OF THE FOREST FLOOR. 



f ornicum. The latter alga, a somewhat characteristic inhabitant of the 

 tide-pools, is shown exposed to the air in Figure 15. Its size may 

 be judged by the leaves of Phyllospadix above and the Chiton clinging 

 to the rock. 



Some of the seaweeds of Port Renfrew were difficult to gather excr-pt 

 from the wash. Here certain large forms such as Dictyoneuron, Des- 

 marestia, Callymenia and others were particularly abundant. Figure 16 



