F. H, Bradley—Silurian age of the Southern Appalachians. 878 
found it filling small basins in the surface of the marble; but, 
as I understand his statement, this may have resulted from 
local sharp folds of the strata, and the steatite may still be a 
regular overlying layer conformable with the marble, as I be- 
lieve to be generally the case. The outcrops, however, are not 
favorable to a decision on this point. At Tomotla P. O., the 
steatite lies in a bed, 8 or 9 feet thick, below the marble, and 
separated from it by a bed of granular quartzyte. Below the 
The marble is also pretty constantly accompanied, hereabout, 
by thin beds of cellular a 
zons, one immediately beneath the marble, the others above it, 
