HALF AN HOUR WITH CORALLINES. 



99 



of the cell. It may be this particular species which 

 Crabbe the poet had in view when he wrote 



" Involved in sea-wrack, here you find a race, 

 Which science, doubting, knows not where to place." 



Since the poet saw it growing in abundance along 



the Suffolk shore, science has found 

 out exactly where to place it, and 

 the due zoological value attached 

 to each function in the biological 

 scale. The species of sertularia 

 called filicula is known by the 

 popular name of " Fern Coralline." 

 As before remarked, it is the only 

 one of the genus having feathery 



Fig. 52. 



Fig. 51. 



Sea-oak, magnified. 



Sertularia filicula, magnified, a. capsule. 



branches and oppositely arranged cells (Fig. 52). 



