page 307 note * The localities where it may be seen are Damhead, with steatite, on the east side of Durnhill; Badenochs, north of Knockhill; Limehillock, over lime, north of Grange; Kothiemay Station; Drumhead, near Ruthven; the hill of Sockach, south of Glass; Craig Carnie, near Baldornie; southward of this it forms a serrated ridge to the west of Boghead and Greenloan, till it reaches the larger mass of Craig Lui; it appears along with diorite in the east and west bends of the Blackwater; again assumes the form of a ridge till it reaches the Blackwater Lodge; and lastly, forms finely buttressed cliffs and castellated pinnacles which overhang the Scores-burn,—the source of the Blackwater.

page 318 note * This possibly may, in one or two of the specimens, be from the decomposition with the fluor spar and sulphuric acid not having been absolutely perfect. My assistant conceives that a mixture of potassium fluoride with fluor spar is, from the greater energy of the reaction and the smaller quantity of resultant calcium sulphate, to be preferred. The greater energy of the reaction, however, entails a certain amount of risk of projection from the crucible. It is much to be desired that pure ammonium fluoride could be procured.

page 319 note * The localities at which this west and east bed is to be seen are—Leach Ghorm; near Carn na Cuimhne; on the south of the Dee in the Balmoral Park; on Creag Mohr; at Boultshoch; at Corn Tullich; in Knappy Park, at Aboyne; at Craigs, Muir, Midstrath, and Wood Cottage, in Birse; west of Arbeadie, Banchory; on the Aberdeen road, near Banchory; east of Feugh Bridge; and in three or four spots on the Hill of Tilquihillie. That only one bed appears at all these spots may however be doubted.