3d System of Mountains. The Basaltic Group.
This group may be more accurately described as separated into two chains, bounding on the east and west the trough or valley through which the river Bann flows from Lough Neagh to the Ocean.
The eastern chain lies in the county of Antrim, being comprehended between the valley of the Bann and the Northern Channel. It presents an abrupt declivity towards the east, falling with a gentle slope towards the west, in which direction the beds composing its mass dip.
The hills of which it is composed are generally detached and distinct, but yet so closely grouped together that there can be no impropriety in considering them as parts of a single chain.
According to Dr. Berger's measurement Kock-lead in the northern
