Word: feil
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Dates: during 1885-1885
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...tremendous undertaking. Agents travelled through Europe visiting the most noted firms in England, France and Germany, without finding one which was willing to undertake the contract of making the glass disks from which the objectives must be made. At last, in 1880, a contract was made with Feil of Paris, for an objective of 36 inches clear aperture. For four years he has worked without success, every disk breaking on account of the heat which is necessary in the last stage of the making. Finally, last month he telegraphed that he had actually molded a glass without its being broken...