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He has supplemented these with an account of experiments made by himself; and from the whole has drawn certain conclusions as to the possible ultimate chemical composition of cellulose and the nitro-celluloses. While the general development of war-material from the mechanical and metallurgical standpoints the production of ordnance and armor is so largely identified with progress in the useful arts in the United States, yet, until very recently, but little has been accomplished in our country in the way of improvement in explosives.
(Typographical errors above are due to OCR software and don't occur in the book.)
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