Easdale

Easdale, a small isle on the west coast of Argyllshire, in the Firth of Lorn, 16 miles SW. of Oban. It contains $1\backslash frac\{1\}\{2\}$ sq. m., and is separated from the much larger Seil Island by a channel 400 yards wide. It is noted for its great primary or metamorphic slate-quarries belonging to the Earl of Breadalbane, which produce from seven to nine millions of slates annually. The workings date from about 1630, and extend to a depth of 220 feet below sea-level.