ceived from the following correspondents and examined with the results stated : COMMUNICATIONS RECEIVED. upon the following subjects : On Tides. By P. G. McE. On an Amalgamator for Gold and Silver Ores. By W. T. B. ing : HINTS TO CORRESPONDENTS. Correspondents whose inquiries fail to ap 1OFFICIAL-1 Index of Inventions, scientific american, 1874-10-24

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ceived from the following correspondents and examined with the results stated : COMMUNICATIONS RECEIVED. upon the following subjects : On Tides. By P. G. McE. On an Amalgamator for Gold and Silver Ores. By W. T. B. ing : HINTS TO CORRESPONDENTS. Correspondents whose inquiries fail to ap 1OFFICIAL-1 Index of Inventions, scientific american, 1874-10-24

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