21 



PLATE X. 



Root and Rootlets. 



Hutton, referring to this specimen, says, in a note to 

 Dr. Lindley : u I don't know what you can make of this 

 singular fossil, which occurs sometimes curiously twisted. 

 I think I may have sent a specimen before. When mag- 

 nified the stem appears indistinctly striated, as you may 

 observe at A and B. Perhaps it is a root." 



From the context it appears that Hutton inclined to 

 the belief that this might be a Calamarian rhyzome. 

 Hence its position here. It seems more likely, however, 

 to be a portion of a Stigmarian root, with its dependent 

 rootlets and sub-rootlets. 



The specimen was one of the large number collected 

 at the Felling Colliery, for Hutton, by William Pearson, 

 who was for many years master-wasteman in that colliery. 

 It is probably (though not certainly) from the High Main 

 shale. 



The Plate is reduced one-third from the drawing. 



