T.2181 ViCKSBURG GROUP. 139 



latitudes where none exist at present, is the only clue we have thu.s far to the 

 age of the latter group. I shall therefore give, first in order, the sections occur- 

 ring near Brandon, Rankin countj r , in which these relations arc illustrated. The 

 outcrops from which this general section is compiled, embrace between them a 

 space of nearly seven miles E. and W. along the line of the Southern R. R., from 

 the junction of the old and new track near Brandon, to Bait's Summit, S. 3, T. 

 5, R. 3 E. The thickness of the strata, as given in the third column from the 

 left, is the result of actual measurement ; the total thickness, as given in th 

 column, is deduced from the R. R. levelings. 



