101 



PLATE LI. 



Sigillaria. Sp. 



The figure is about one-eighth of the natural size, and 

 shows a good example of the casts of Sigillarian trees, 

 which are common in the Carboniferous Sandstones of 

 the North of England. 



The locality of this particular specimen is not given. 



The original drawing (one-fifth of the natural size) is 

 by Prior. 



