The tooth figured in the accompanying plate was originally noticed by me in this Magazine thirty years ago, and was more fully described by me a year later in the Quarterly Journal of the Geological Society, 1870, p. 507.

In a paper published some years back on the Tuscan and Ligurian Serpentines Professor Bonney has noticed incidentally the occurrence of glaucophane in the gabbro associated with these rocks at Pegli, a village to the west of Genoa; and later added a rather fuller description towards the end of his paper on “The Glaucophane Eclogite of the Val d'Aoste.” Last year I spent a few days at Pegli for the purpose of examining the rocks at the village and in its neighbourhood, when I found the gabbro in some abundance, in consequence, as I think, of blasting for road-making. The specimens then collected have disclosed on examination a few points of interest which may not, I hope, be deemed a superfluous addition to the accounts already published. Those have been rather numerous.

On the 24th of June, 1885, a paper by me, entitled “Observations on some imperfectly known Madreporaria from the Cretaceous Formation of England,” was read at a meeting of the Geological Society which, encountering an adverse report from the referee, was with the consent of the Council, withdrawn by me, and published verbatim in the Geological Magazine of the same year (Dec. III, Vol. II, pp. 541–563, PI. XIV), 1885. The present communication is a continuation as well as a correction of the former one, which has become necessary from the acquisition of additional material.

The interesting paper by Mr. Harker in the GeologicalMagazine of May, 1899, on “Glaciated Valleys in Skye,” recalls to my mind many similar observations I made in the Faroes in the Summer of 1894. Not only are the valleys excavated out of homogeneous rocks, but the Faroes, like the Cuillins, had a glaciation of their own. It may be advisable, then, to call attention to some points which resemble those referred to by Mr. Harker, as well as others which are not seen in Skye.