graphy.‘ permanently to the purpose. The whole arrangement is At the Bradford Colliery, England, recently, accurate pic- shown in Fig. 2, and is very handy, as the upper part can be tures of some underground workings in the mine were ob- raised to any desired hight, regulating the heat and draft,… … ———— +8 Novel Mode of Strengthening Cast Iron. The apparatus acts admirably as a small gas furnace for The President, Mr. R. M. Bancroft, and members of the crucible operations, such as the fusion of silicates with car- Civil and Mechanical Engineers’ Society, when visiting Kir- bonates of…
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