I am as much convinced today as I was the last time I was here that gynes 3 to 9 are Tennessee, i.e., Pitkin. There are no Pennsylvania species and all the forms are decided Chesterian forms. The gynes 2 and 2a maybe Pennsylvanian and is probably to be correlated with the Marrow. Gyne 1 can I see no forms, but its sandy nature and position indicate that it is in the Pennsylvanian.