230 Geology of the Country between 
marble, it would be difficult to say. ‘Their igneous origin seems to 
be universally admitted and at a time when it is so fashionable to re- 
fer all troublesome facts in geology to that mighty cause, I may be 
excused for conceiving the possibility of a blue limerock, becoming 
a white one, when exposed to its energetic agency. 
By reference to the section, it will be seen that the strata, which 
along the eastern part are represented as having a southeasterly dip, 
at Cumberland and for some distance this side, have a reversed dip. 
It would be solving an interesting question, to determine the precise 
line where this change of dip occurs. Any one, however, who ex- 
pects to find a well defined anticlinal line, continuous for any consid- 
erable distance, must necessarily be disappointed. ‘There is no such 
line to be found. ‘There is a district between Hancock and Cum- 
berland, where the strata are found more confusedly disposed, and 
where sudden changes in the dip of the rocks are frequent. East 
of this district, the dip is very regularly S. of E. West of it, the dip 
is equally uniform towards an opposite point, N. of W. Beneath 
this space then, we are authorised in concluding, the eruptive power 
that was instrumental in upheaving the Appalachian chain, was most 
energetically exerted; this may be considered as the true anticlinal 
region. I regret that no opportunity was afforded me of exploring 
this region in the direction of its length. Subsequently, however, I 
had an opportunity of crossing it at another point, a short distance 
north of the Cumberland road. I copy from notes taken at the time. 
** About ten miles east of Bedford, and between that point and the 
Crossings, we may see slates and sandstones alternating and present- 
ing an extremely interesting, although somewhat confused appearance. 
Within the compass of a few miles, there occur strata of various col- 
ors, although mostly red and chocolate color, of every variety of tex- 
ture, and reposing in every possible degree of inclination, from verti- 
cal to horizontal, and often exhibiting complete semicircular curves. 
The appearances indicate that here was one point, where the eruptive 
power from beneath was principally exerted.” By referring to a 
map, it will be evident how well these two observations coincide in 
pointing to the same tract of country, and I have no doubt, if fur- 
ther investigation were made along this line, north and south of the 
points already visited, that similar appearances would be found. It 
remains for future observers to ascertain also the direction of this an- 
ticlinal region; it probably follows more or Jess faithfully, the general 
curve of the mountain chains as represented on the maps. ‘There 
are some indications, however, that render it probable that its course 
