34 GEOLOGICAL SURVEY OF ALABAMA. 
as my work in the past had been largely in making special 
accurate surveys preparatory to the opening of mines and 
the investment of capital; so if the reader chooses to find 
fault about the accuracy of the geological examinations, I 
shall beg he will excuse me, not on the ground of inability, 
but on the ground of lack of time and means. 
The seams of this basin vary in size, condition and sur- 
roundings, but not more so than they do ordinarily in other 
coal fields. Some are larger here than they are in other 
parts of the Cahaba Coal Field, while others are smaller. 
I give below two measured sections of the Little Pittsburgh 
seam at different localities. 
(Little Pittsburgh seam, on Adkins Spring Branch, in section 26, town- 
ship 16, range 1 east): 
LAMINPTEQ SPNOSTONE 
/fFoo7 #incHes COAL 
s21NGHES COAL 
BOTTOM SLATE 
