Mr. Webster on some new Varieties of Fossil Alcyoiiia. 387 



This appears as blackish streaks in the ash-coloured marl, much 

 resembling in form some plant. They frequently project above 

 the surface, being a little more compact than the marl, though 

 they are also calcareous ; they lie in all possible directions, ex- 

 hibiting sections sometimes at right angles to their axis, sometimes 

 oblique, and sometimes longitudinal. Their stems appear to have 

 been hollow, and they have some parts attached to them extremely 

 thin, like leaves. I found nothing like bulbs or heads to these. 

 They are also very extensively distributed, occurring at every place 

 where I observed this stratum. 



Sc 2 



