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broken up, and the workmen dispersed. Most of them reached Pittsburg, Penn., and a part of them were engaged by Col. James O'Hara, in the establishment of the first window-glass factory in the Western States. The same factory is in operation to the present day, and others of the Fredericktown company were instrumental in introducing the same branch of the glass business into Pennsylvania, at New Geneva, upon the property of the late Albert Gallatin. Others of the number, previously mentioned, established themselves in Baltimore, and in all of the places noticed. Some of their descendants still continue the business.     There are at this time ten window-glass factories in the vicinity of Pittsburg, and fifteen in the river towns,— in all twenty-five works,— manufacturing over 220,000 boxes of window-glass of 100 feet each annually.     We now proceed to examine a more interesting topic, viz., the rise and progress of the flint-glass business in the West. We have shown that most of the workmen, on the breaking up of the glass-works in Fredericktown, migrated to Pittsburg, attracted there, doubtless, by the coal mines. Some of these persons were successful in establishing the manufacture of window-glass, while