iles, etc. One of its most interesting Henri Moissan in the art of diamond making he em- forms is the workman’s dinner pail. It cooks while he ployed the following methods: His electric furnace comprised an iron casing having a lower block of works; he can have a hot meal wherever required.… … takes a to-and-fro move- to great pressure, and ment. The crank-bar is this was done by grasp- coupled to the middle
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