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230 OXIDES, EAETHS, AND ACIDS. yellow and at last violet-blue in the inner flame. Soluble with difficulty in salt of phosphorus into a bead which becomes blue in the inner flame. Is not decomposed by acids. Ti, titanium 60'13, oxygen 39'87. Analyses of anatase a from Bourg d’Oisans, b from the Brazils, both by H. Bose ; c from the Brazils by Damour:— a b c Titanic acid . , 99'25 99'75 98'36 Bed oxide of iron. 0'75 0’2S i'll Oxide of tin . . — — 0 20 In attached and imbedded crystals. Is found in narrow irregular veins in granite and mica slate, associated with quartz, epidote, axinite, felspar, near Bourg d’Oisans in Dauphine; in mica slate in the valley of Maggia in the Canton of Tessin, and in the valley of Tavetsch in the Grisons, in the Canton of Wallis, in Salzburg, at Lichtenberg and near Hof in the Fichtelgebirge, near Aschaffenburg, in granite in Cornwall and Spain, in many parts of the Ural, in crevices in clay slate near Hof Dale in the parish of Slidre in Norway, in the sand of a brook in which diamonds are found near Itabira de Matto Dentro in Minas Geraes in the Brazils. Copper-red cubic crystals of TiCy + 3X1^, titanium' 78'00, nitrogen 18'11, carbon 3'89, are not unfrequently found in the •hearths of iron furnaces. When these are ignited in an atmo sphere of the vapour of water, they are converted into an aggregation of crystals of anatase. 118. CASSITEEITE.—Oxide of tin; Phillips. Etain oxido; Hauy. Pyramidales Zinn-Erz; Mohs. Zinnstein; Hausmann. Kassiterit; Haidinger. e. c v Pyramidal. 101,001 = 3E° 65''2. C 001, a 100, e 101, , W 501, , m 110, h 210, r 320, s : y 335, i 552, , t 313, Z 321. ha 20° 34' ee' 40° 29' id 79° 28' ra 33 41 ini 22 49 ea' 90 0 ma 45 O sm 40 26 zc 67 35 ad 90 0 ym 00 17 zz 20 64 wa 10 34 cm. 90 0 zzT 01 42 ea 50 5 ss" 87 7 tc 35 20 ca 90 0 ss' 58 20 zm 25 0 ee' 07 50 sd 00 61 ern 60 45