PLATE X. 



Fig 1. Lepidodendron Volkmannianum, Sternb., a sandstone impression from 

 the waste heap at White Mine Colliery. 



Fig. 2. Lepidodendj-on Velcheimi, Sternb., a sandstone impression from the 

 waste heap at White Mine Colliery. 



Fig. 3. Spheaopteris flabellata, Baily, portion of a frond showing three 

 pinnules, from the Eed Sandstones of Fair Head (t. 3968). 



Fig. 4. Stigmaria ficoides, Sternb., a sandstone cast of a rhizophore, from a 

 quarry iu the cliffs 100 yards east of Ballyvoy Pier. Half natural 

 size. 



