290 P s t e I 6 i a 



high. The region is shown in Plate XXIII. fig. 2. 

 Plate XXV. fig. I. shows many stages in the devel- 

 opment of tide pools. 



Many points along the coast show elevated 

 portions of rock which are exposed only at 

 low tide; on cither side of these projections are 

 depressions into which the tide runs. These 

 indicate a tide-pool region so old that the bar- 

 riers between pools have been worn away and 

 only the rough rock is left. 



Pools in conglomerate are few in number 

 and possess no striking characteristics. The 

 rock east of "Baird's Point" is flat and gently 

 sloping, and is pitted with several hundred 

 incipient tide-pools, very shallow, and generally 

 circular. There are no boulders and the life 

 forms are few. There were found only Clado- 

 phora, sea anemones, small barnacles, and eel 

 grass, a marked contrast to the variety found 

 in the sandstone pools in this same region. 

 As the pools arc washed by the high tides and 

 possess good illumination, it may be supposed 

 that the paucity of life forms is due to the 

 youth of the pools. 



