yg Mr. Mills’s Obfervations on 
which, after pafling Carrtckfergus, chiefly confifls of ftu- 
pendous bafalt cliffs ; in which we obferved the noted feven 
caves, which are fiifures of various dimenfions going in to 
the weft ward. Farther north the cliffs are divided into ho- 
rizontal beds of conftderable thicknefs, by the intervention 
of a red fubftance, fimilar in appearance to that at the Giant s 
Caufeway ; near the water’s edge, and under the lava, the 
white limeftone is frequently leen ; and thefe appearances 
continue all the way to Red Bay. At feme diftance from the 
coaft are the Maiden’s Rocks, which, from their dark colour, 
I judge are alfo bafaltic. At the head of Red Bay, the moun- 
tains flope gradually to the fea, have a red hue, and, I am 
told, iron ore is found in its vicinity. Being obliged to anchor 
in a little fandy cove on the north fide of Cufhendun Bay, I 
landed, and found the beach fkirted with tumblers of bafaltes, 
hornftone, granite, and gneifs. In a brook is a firing of iron 
ore, half an inch thick, running north between compact 
hornftone fides. At a fmall diftance from the beach is a large 
fijfure or cavern, whofe fides are tinged red. Weftward 
from hence are very large blocks of gneifs ; but I could not 
difeover whether they compofed the firm ftrata, or were only 
tumblers : it is however to be remarked, that north from hence, 
at Murlogh, there is a bed of gneifs, whofe thicknefs, is un- 
known ; and again, four miles from Clogh ( which is S.W. 
from hence), under a bed of white limeftone, forty feet thick, 
I faw the upper part of a bed of gneifs ; fo that what is feen 
here is probably the firm ftratum. Sailing from hence, I 
plainly faw that the high broken point, which forms the N.E, 
point of Cufhendun Bay, is compofed of lava, with fome rude 
appearance of pillars near the top ; whilft clofe to the water’s 
edge, and at fome little diftance in the fea, were tumblers of 
an immenfe fize* ^ 
