o- been severely strained by the action of the current and delicate task of all, the joining of the side to the spheric pressure,'so as to hasten the diffusion. By during the sixteen months of submersion. By the brim by an invisible seam. The entire surface is again adding to this impure helium… … somewhat slow. It brim is molded to corresponds with the desired form about 1 cubic cen- THE STORY OF A SILK HAT. and slightly curled. timeter of pure The edge of the helium per hour. On the contrary, the method, when tions were undertaken the successful wreckers received brim is then sharpened…
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