292 SILICATES. Analyses of tlie translucent green and brown varieties called malacolite or sahlite g from Sahla, h, i from Bjormyresweden in Dalecarlia, all by H. Rose, Jc from Langbanshytta, g = 3'27, by Reuterskold, I from Nordmark by Funk, m of fibrous augite (amiantbus) from Scbwarzenstein in the Tyrol by Meitzen- dorf:— g h i k I m Silica 6480 64-08 64-55 53-56 62-18 55'87 Lime 23-67 23'47 20-21 23‘80 22'00 17'70 Magnesia .... 16-49 11-49 15'25 16 27 7 06 20'33 Protoxide of iron . . 4’44 10-02 8'14 4'48 10-13 4’31 Protox. inang. . . 0'42 0-01 0'73 l - 87 l - ei 1’12 Alumina .... o-2l — 0-14 0'25 0'42 — Analyses of the dark green or black opaque varieties called augite n from Pargas in Finland by Nordenskiold, 0 from the Rhongebirge (mean of two), p from Gillenfclder Maar (mean of four), q from Zigolonberg in the Fassathal (mean of two), r from jEtna, s from Vesuvius, all by Kudematsch :— n 0 P ? r S Silica .... 60-42 48-75 60-12 60-55 50-90 Alumina . . . 6'60 6 67 6-70 4-20 4-85 637 Lime .... . 19-07 18-78 23-01 20-06 2229 22-90 Magnesia . . . . 12-01 10-31 14-30 13-70 13-01 14-43 Protoxide of iron . 0-92 7*40 7-55 11-00 7'90 0-25 Water .... — — _ _ Analyses of the black variety (hedenbergite) t from Tuna- berg, u from Taberg, both by H. Rose, v from Arendal by Wolff, w from the island of Pico, g = 3-174, by Ilochstetter, x of asbestiform augite by Gruner, y of augite, g = 3-380, from a mixture of crystals of augite and amphibolo imbedded in one another in the basaltic tufa of Hiirtlingen, by Rammclsbcrg -.— Silica . . Alumina . Lime . . Magnesia. Protox. iron Protox. mang. t u V w X y 49-01 63-30 47*78 60-40 439 47-52 — — • 2-99 1-9 8-13 20-87 2219 22-96 21-10 0-6 18-25 2-98 4-99 — 2'40 1-1 12-78 20-08 17-38 27-01 22-00 62-2 13-02 — O 6 (water 0-30) — 0"40 In imbedded and attached crystals and columnar, fibrous and granular masses.