F. H. Bradley—Silurian age of the Southern Appalachians. 279 
ART. XXX.—On the Silurian age of the sah pity Appalachians ; 
by Frank H. BRApL 
1. Introduction. 
Emmons, in his American Geology, refers most of the rocks 
along the western te of North Carolina * to his Taconic sys- 
tem, “and says (vol. i, pt. 2, p. 24) that “the locality at the 
Warm Springs ‘i sdieou County, N.C.] is a good exhibition of 
the development of the Lower Taconic rocks in the Southern 
States ;” but he also states (p. 25) that, in Cherokee County 
[near Murphy], the system is separated [divided] a few miles, 
by the interposition of a ridge of primary schists with staurolite. 
Safford, in his Geology of Pape eat 1869 (pp. 177-8), says, of 
the metamorphic rocks of the rn border of that State: ‘A 
portion of the beds are certainly sete bie to the Sota PE 
the Fomnainigen, although conformable, may be older, and most 
likely are. * The sien of the greater age ‘of ee 
other parts is not so easily settled, and must remain open 
the present. I know of no sufficient reason for adie | any of 
these rocks to the Huronian or Laurentian series of Canada. 
Again (p. 193): After the Duoes, the Chilhowee sendarotion re- 
pepeet and continue up the [French Broad] river to the State 
lin In North Carolina, a short distance beyond the 
he the ous roup sets in again, and is the formation to 
within a mile of the Warm Springs. Then follows a Knox belt. 
e Springs are located on the Knox emer z= e- 
Pare the western 
fie g of the State, see oh covering the whole area there 
assigned by Emmons to the Tac 
prings region. <As the text of his report has not yet appeared, 
taking residence in Knoxville, in 1869, the writer has te his attention 
pa riots drawn to the local features of the Lower Silurian rocks of East Ten- 
incidentally, in co: wi for of mining properties ; 
ough, clew to the Blue Ridge puzzle having thus been secured, a final trip 
was solely for the purpose of completing its solution. Thus much to ex- 
Plain what some will rega a trespass upon the preserves of the State 8 
gists of North Carolina and ia, though neither of these officers has yet been 
ble ake other than very hasty visits to the region in qu Withou 
Opportunity of examining all the literature of the subject, reference can be made 
y to the works of Emmons, Safford and Kerr 
