194 SEA- WEEDS 



sensibility ; and these, when the fish lies on a soft 

 bottom, such as mud or sand, would be partly buried 

 in it, and would be cognisant of the presence of any 

 Annelide or Echinoderm that might be burrowing in 

 the ground or crawling over it, fit for the capacious 

 mouth to engulf, and the ample gullet to swallow. 



THE NOTHE LEDGES. 



In pursuing the line of shore which extends from 

 the foot of the Lookout to the Nothe Point, beneath 

 a range of low, crumbling, marly cliff, we pass for 

 a while over nearly horizontal ledges, which dip suc- 

 cessively into the sea, as I have more than once had 

 occasion to mention. This is a rich collecting ground. 

 The broad, shalloAV, half-tide pools afford Anthea 

 cereus of the grey variety. Actinia meseTnbryantJiemum, 

 and A. crassicornis ; and in the latter part of summer 

 Padina pavonia grows in them. Those parts of the 

 ledges that are uncovered only at the lowest tides, 

 yield the green-tentacled and crimson-tipped variety 

 oi Anthea, very brilliant and silky, and in great pro- 

 fusion ; and among the sea-weeds, two or three kinds 

 of Cladoplioraj Corallina, and Jania, thick tufts of 

 RhytipJilcea pinastroides, and some PoIysipJionice and 

 Callithamnia. 



After we have passed along for some distance, the 

 cliffs begin to grow more lofty, and more solid and 

 rocky in their character ; the pools disappear, and the 

 ledges become more rough, and more indented Avith 

 deep narrow fissures, until they terminate in an ab- 



