Mineral Productions of Shropshire. 205 



Coal called the best coal 



Black bass, or slate 



Coal called the middle coal 



Dark brnwn stony clod 



Coal called clod coal 



Clod, of a pale blue 



Coal called little flint coal 



Little flint ; a rock of a dark gray, mixed with 



pebbles and ironstone - - '- 16 



Strata 



