. Ontario Sessional Papers, 1897-98, rv in MlLUM£T£ltt I 1 I ? \ \ » J^C 61 Victoria. Sessional Papers (No. 33). A. lSh> basic gneiss, tlie line of contact being well have been derived from this rock. Tlmarked by a narrow valley which runs south- mineral occurs in bkded crvstals ?. OUUIl UOll- ** American Journal of Science, 2nd Series, X, stituents as barium sulphate, is completely^^ soluble. In preparing the samples for treat- 238 Plate Curve, Corundum Rock (Hastings Co., Ont.); with Sp. C. Curve, and Distribution Curves of Corundumand Magnetite. Solid

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. Ontario Sessional Papers, 1897-98, rv in MlLUM£T£ltt I 1 I ? \ \ » J^C 61 Victoria. Sessional Papers (No. 33). A. lSh> basic gneiss, tlie line of contact being well have been derived from this rock. Tlmarked by a narrow valley which runs south- mineral occurs in bkded crvstals ?. OUUIl UOll- ** American Journal of Science, 2nd Series, X, stituents as barium sulphate, is completely^^ soluble. In preparing the samples for treat- 238 Plate Curve, Corundum Rock (Hastings Co., Ont.); with Sp. C. Curve, and Distribution Curves of Corundumand Magnetite. Solid line Corundum Gravities, 5borr heavy das*) Dashed line . Corundum. Dasbed-doifed Hoe Ma0neiite. Plate Curve. Corundum Rock: Renfrew Ont. ..>! _ I, l^ i- Taj O Plate showing experimental line of treatment in Concentration of Corundum Rock. Whole Rock i Blake Crusher,! I tfQMeshRolkOrHyJrgjIic ClossiferQverfTow Spigiot NI2 Verlicol Lino SPisor Separator Harl7. Jig^, gp Di^chgrtJo MosJn^cSeparofoijOSAnjp Ma^rjcfic Separati1 13?S^;^ *^^ Coru^r, ^^ Mq^tnetic Seporator. 16 A^ip

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