Since the discovery, by His Grace the Duke of Argyll, of the “Leaf-bed” at Ardtun, in Mull, there has not, so far as I am aware, been another found throughout the whole of that extent of land and shore, where we might hope for such a discovery, among the Inner Hebrides.

It was my good fortune to light upon one last summer. While lying in the harbour of the island of Canna, during a boulder and mineral hunt, I heard that fuller's earth had been found at the south-western end of the island. Upon being shown samples of this, I noticed among them fissile schists very similar to those of Ardtun. In proceeding, therefore, round the western cliff-girt coast of the island, to visit the fuller's earth locality, we landed at every accessible point under the great line of precipice, and at one, situated almost at the north-west corner, and immediately under the loftiest point,—more than 730 feet in height,—we found a leaf-bed. There is here a cliff foot, running for some little distance along the shore; this is strewed with numberless masses of rock which have fallen from the cliff, and which fragments give shelter to a colony of auks and puffins.