ALUM IN BAKING POWDERS. MUNN & CO. Editors and Proprietors. TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific American Supplement Scientific American Export Edition. Contents. THE SCIENTIFIC AMERICAN SUPPLEMENT NC). 3U. For the Week ending. July 19 1879. THE CAPTIVE BALLOON AT CONEY ISLAND. THE TELEPHONE AS A LIGHTNING INDICATOR. New Steel Railway Bridge. NO. 37 PARK ROW NEW YORK., 1879-07-19


ALUM IN BAKING POWDERS. MUNN & CO. Editors and Proprietors. TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific American Supplement Scientific American Export Edition. Contents. THE SCIENTIFIC AMERICAN SUPPLEMENT NC). 3U. For the Week ending. July 19 1879. THE CAPTIVE BALLOON AT CONEY ISLAND. THE TELEPHONE AS A LIGHTNING INDICATOR. New Steel Railway Bridge. NO. 37 PARK ROW NEW YORK., 1879-07-19


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