^{page 110 note 1} Beitr. zur Geolog. Karte der Schweiz, Lief, ix, pp. 130–1, 142, 173Google Scholar; e.g. near Evolena, L'Allée, and the Moiry Glacier (in another branch of the Val d'Anniviers).

^{page 110 note 2} Gerlach, , loc. cit. and Lief, xxvii, pp. 87–90Google Scholar, mentions the connection of this “topfstein” with serpentine, grüner schiefer, and grauer schiefer (the calc-micaschist), but, if I rightly understand him, is not clear as to its origin, or even that of the serpentine.

^{page 111 note 1} Quart. Journ. Geol. Soc., vol. L (1894), p. 283.Google Scholar

^{page 112 note 1} Cf. description of serpentine from the Gornergrat, Quart. Journ. Geol. Soc., vol. lii (1896), p. 452.Google Scholar

^{page 112 note 2} It may be an optical anomaly due to strain, or, as suggested by Eosenbusch, to an admixture with actinolite, almost identical in general aspect. I obtain the results in both slices.

^{page 112 note 3} Quart. Journ. Geol. Soc., vol. xxxvii (1881), pp. 44–5.Google Scholar

^{page 113 note 1} At Ayer, a hamlet about an hour's walk down the valley, are old nickel-mines, but as I did not anticipate this mineral turning up here, I did not visit them.

^{page 113 note 2} Named from Noumea, capital of New Caledonia; described by Professor Liversidge, , Proc. Roy. Soc. N.S.W. 1875, p. 75Google Scholar; Journal, 1881, p. 227.Google Scholar

^{page 113 note 3} This part is not unlike chrysocolla, but the colour is rather brighter.

^{page 113 note 4} Ed. 1892.

^{page 113 note 5} Proc. Roy. Soc. N.S.W., ut suprà

^{page 114 note 1} See also Croix, La, “Mineralogie de la France et ses Colonies,” vol. i, p. 438. He speaks of noumeite as either crypto-crystalline or amorphous.Google Scholar

^{page 114 note 2} To speak only of the nickel-oxide, that varies generally from 22·0 to just over 45·0; but in one case 14·6, in another 10·2, and in a third only 2·32. Münster, C. A., quoted in Min. Mag., vol. x, p. 39Google Scholar, says that he has found nickel-oxide replacing magnesia in olivine, serpentine, steatite, etc. Professor Liversidge suggests that the formula of noumeite may be 2 Mg O 3 Si O² 2 H² O, where some of the magnesium is replaced by nickel.

^{page 114 note 3} I am indebted for notes and specimens of this mass to my friend, Mr. J. Eccles, F.G.S., but I had a remarkably good view of it at a distance of about half a mile, during the ascent of a neighbouring peak. As I know him to be one of the most accurate of observers, and the glen leading to the base of the Crête is very stony and uninteresting, I absolved myself from undertaking a tiresome walk.

^{page 114 note 4} By various authors, myself included.

^{page 115 note 1} Some of it shows strain phenomena, indicating the action of a pressure subsequent to that which has produced the general structure of the rock.

^{page 115 note 2} Loc. cit., p. 452.

^{page 115 note 3} This is the mineral which in some earlier papers I suggested might be a variety of kyanite. It is a frequent constituent of these green-schists.

^{page 115 note 4} In these rocks, as I have already described, the green mineral is sometimes a prismatic or acicular hornblende, sometimes chlorite, and both minerals may be present. The “chlorite schist” of tlie Start and Bolt Head district in South Devon is a rock of similar character to these Alpine green-schists.