58 Scientific Intelligence. 
Lastly, we have to notice the disturbance of the Bald and Stone 
Mountains. They are situated six or eight miles to the east of the 
Blue Ridge. Between the headwaters of the Catawba and those 
of Broad River, there extends many miles eastward a range of 
mountains attaining the height in places of four sebacited ee 
The Bald and Stone Mountains, from their appearance, are pro 
bly the highest Sis of this ridge, a nearly equidistant from the 
Catawba and Broad Rivers. My information in reference to them 
is derived ne ely from sonia with a number of gentlemen, 
and from the accounts eae in the newspapers. The first shocks 
were perceived on the 10th of February last, and they were for 
the first month or two more frequent than they have since been. 
During the last two months they have occurred at intervals of a 
week or two, but have been rather more violent than the average. 
Within the last five months —— a hundred shocks, accom- 
panied with noises, have occ 
The distance from this sist or the Valley River Mountain, in 
heart seed due west, is more than one hundred miles ina 
direct line. He tie mountain in Haywood, to reach the arallel 
of Saceuae maonire through the mountain near Ellejay, in Macon, 
one must travel more than thirty miles south. It is thus m ani- 
fested that there is a belt of country more than a hundred sail 
in extent from east to west by thirty in breadth in which such 
disturbances have been observed. In the present state of scientific 
knowledge, it may not be an easy task to offer an explanation of 
the causes which will be generally accepted as satisfactor 
When we take into account these indications at different points 
in the North Carolina mountains, it seems evident that there 18 
beneath the surface a condition of things that pends over a con- 
Suewbere: to so great an extent, it is server difficult to decida 
until further Shacvaiione have been made. Is it not of sufficient 
interest to justify the managers of the Coast Survey, or some other 
competent agency, to make such careful measurements of the 
- of certain points, as to ascertain, within the next twenty- 
five or fifty years, whether any, and to what extent, changes may 
be i bebiiening in this region ? 
2. Porphyry of the Island adi Lambay, a : miles a of 
Dublin Bay.—Professor Epwarp Hv ut finds this gree n por- 
phyry (Geol, Mag. for Oct. 1874) to consist of a felsitic base, 
which is picasa throughout with oot of a chloritic min- 
